new

Question 1

minerals that characterizes a given intensity of metamorphism are called

Answer 1

index minerals

Question 2

shear faulting produces a rock type called

Answer 2

mylonite

Question 3

average T increase j near surface

Answer 3

25C/km

Question 4

transition at 400-670 depth must have a T around

Answer 4

1500 C

Question 5

tempestimates of temperature at the outer core mantle vou dary is around

Answer 5

4500 to 4800 C

Question 6

inner core outer limit has a temp of

Answer 6

6600 C

Question 7

center of the earth is approx to be

Answer 7

6900 C

Question 8

showed in 1858 how continents looked before they separated and cired fossil evidence in north america and europe based his reasoning on the catastrophe of noahs flood

Answer 8

antonio snider pelligrini

Question 9

friend of wegener divided pangea i to two parts which initially separated

Answer 9

alexander du toit

Question 10

wheb was plate tectonics theory developed

Answer 10

1960s

Question 11

ocean vaisns are divided by a great ridge approx

Answer 11

64,000 km and about 1500 km wide

Question 12

saw a way to tezt the idea of sea floor spreading should be recorded in the magnetism of the basalts in the oceanic crust

Answer 12

fres vine and D. H. Matthews

Question 13

rate of seafloor spreadinh appears to range from

Answer 13

1-17 cm per year

Question 14

most deep sea floor was formed during

Answer 14

cenozoic time (last 65 mya)

Question 15

corals survive pnly woth a what salinity

Answer 15

27-40 ppt

Question 16

cannot live corals with what depth

Answer 16

76m

Question 17

0.5-1km

Answer 17

fringing reefs

Question 18

cooling through conduction and radiation

Answer 18

~24-40 m.y

Question 19

rate of delivery of salt to the oceans

Answer 19

~90-100m.y

Question 20

thickness of total sedimentary record divided by average sedimentation rates

Answer 20

~1.6 b.y

Question 21

oldest rocks on earth

Answer 21

acasta gneisses in northwestern greenland

isua supracrustal rocks in west greenland

rocks found in the minnesota river valley and northern michigan in swaziland and in western australia

Question 22

date of acasta gneisses in northwestern canada near great slave lake

Answer 22

4.03 Ga

Question 23

data of isua supracrustal rocks

Answer 23

3.8 Ga

Question 24

date of rocks in minnesota

Answer 24

3.5-3.7 bya

Question 25

date of rocks in swaziland

Answer 25

3.4-3.5 bya

Question 26

western australia

Answer 26

3.4-3.6 bya

Question 27

date of zircon grains found in sedimentary rocks in west centeal australia

Answer 27

4.4 bya

Question 28

date of 70 well dated meteorites using different dating methods rb sr sm nd ar ar

Answer 28

4.4-4.6 bya

Question 29

date of iron meteorite canyon diablo meteorite

Answer 29

4.54 bya

Question 30

best age of the universe

Answer 30

14-17 bya

Question 31

oldest human fossil

Answer 31

Tabon Man

Question 32

age of tabon man

Answer 32

~22,000 tears old

Question 33

who discovered tabon man

Answer 33

Dr. Robert B. Fox Tabon Cave Palawan May 28 1962

Question 34

oldest fossil in ph

Answer 34

fusulinids found in calamian islands palawan permian

Question 35

applied stenos law and classified rocks in italian mountain exposures primary secondary tertiary

Answer 35

giovanni arduino

Question 36

saw similar transitions in germany

Answer 36

abraham g. werner

Question 37

saw same divisions in great britain

Answer 37

willian smith

Question 38

coal rich interval in northen europe

Answer 38

carboniferous system 1822

Question 39

subdivided by charles Lyell based on % of fossil species still living today

Answer 39

tertiary system 1831

Question 40

defined by adam sedgwick for the fossil poor strata in NW and ales

Answer 40

cambrian system

Question 41

defined by R.I murchison based on the rocks in SE wales contained fossils

Answer 41

silurian system

Question 42

named by charles lapworth based on the oresence of a distinct fossil assemblage

Answer 42

ordovician system

Question 43

named after the strata in the jura mountains

Answer 43

jurassic

Question 44

named after the sandstones in devonshire SE england

Answer 44

devonian system

Question 45

formerly known as octahedrite and a polymorph of titanium dioxide. forms in veins and crevices in meta rocks such as schists concentrated in placer deposits. formed by the weathering of titanite

Answer 45

anatase

Question 46

what is the crystal system if anatase

Answer 46

tetragonal

Question 47

schist speckled with tiny black anatase crystals

Answer 47

black anatase

Question 48

weathered anatase becomes

Answer 48

rutile

Question 49

titanium dioxide has a orthorhombic symmetry and iron is almost always preseing in this minerals structure and contains nobium occurs in hydrothermal veins common in areas diamond placer deposits of brazil widespread in mineral veins in the Alps

Answer 49

brookite

Question 50

red or glowing pale golden needlelike crystals when not enclosed in quartz usually yellowish or reddish brown radiate in starlike sprays from hematite crystals

Answer 50

rutile

Question 51

crystal system of rutile

Answer 51

tetragonal

Question 52

also called tinstone gray or white occurs in hydrothermal veins at high temp with tungsten minerals such as ferberite and topaz molybdenite and tourmaline

Answer 52

cassiterite

Question 53

a specimen displaying the yellow variety of tin oxide

Answer 53

variamoffite cassiterite

Question 54

crystal system of cassiterite

Answer 54

tetragonal

Question 55

primary ore of manganese highly oxidizing conditions as an alteration product of manganese minerals such as rhodochrosite and is used in decolorizing agent in glass and in dry cell batteries

Answer 55

pyrolusite

Question 56

pyrolusite crystal system

Answer 56

tetragonal

Question 57

a beryllium aluminum oxide hard and durable chatoyancy

Answer 57

chrysoberyl

Question 58

brilliant green in daylight to cherry red under tungsten light

Answer 58

alexandrite

Question 59

group of twinned alexandrite crystals with mica from russia

Answer 59

siberian alexandrite

Question 60

crystal system of chrysoberyl

Answer 60

orthorhombic

Question 61

forms the coltan series with the mineral tantalite

Answer 61

columbite-tantalite

Question 62

crystal sytem of columbite-tantalite

Answer 62

orthorhombic

Question 63

the columbite end of the series is rich in

Answer 63

niobium

Question 64

tantalite end are rich in

Answer 64

tantalite and is denser than columbite

Question 65

most common member of the coltan froup

Answer 65

ferrocolumbite

Question 66

these are present as minor constituents in columbite-tantalite

Answer 66

scandium and tungsten

Question 67

dark crystals of the coltan series mineral

Answer 67

yttrotantalite

Question 68

crystal sytem of columbite-tantalite

Answer 68

orthorhombic

Question 69

its crystals occur in granitic pegmatites forms with cassiterite in hydrothermal veins at high temp also forms at medium temp as pitchblende the ceramic pellets of this are used in nuclear reactors

Answer 69

uraninite

Question 70

crystal system of uraninite

Answer 70

cubic

Question 71

complex oxide of yttrium iron tantalum niobium and uranium specimens with high uranium content have a yellow brown earthy rind similar conditions as columbite used in cathode ray televisions optical glass

Answer 71

samarskite

Question 72

crystal system of samarskite

Answer 72

orthorhombic

Question 73

major source of the element niobium, complex niobium sodium calcium oxide turn green after heating contains traces of uranium and thorium forms in pegmatite rocks dominated by carbonate minerals ised either alone or together with zirconium in claddings for nuclear reactor cores

Answer 73

pyrochlore

Question 74

major alloying element in nickel based superalloys

Answer 74

niobium

Question 75

crystal system of pyrochlore

Answer 75

cubic

Question 76

form excellent octahedral crystals related to pyrochlore both minerals are dominated by ree tantalum found in pegmatites rich in lepidolite or other lithium bearing minerals and in albite major ore of tantalum

Answer 76

microlite

Question 77

crystal system of microlite

Answer 77

cubic

Question 78

soft heavy copper oxide aggregates with the appearance if sugar are common is translucent and bright red. known as ruby copper in the variety called chalcotrichite or plush copper or crystals rich carmine color

Answer 78

cuprite

Question 79

soft earthy brick red to brownish

Answer 79

cuprite of the tile ore variety

Question 80

bright red hairlike crystals of cuprite

Answer 80

chalcotrichite

Question 81

crystal system of cuprite

Answer 81

cubic

Question 82

red oxide of zinc assoc with black franklinite and white calcite rare constituent of volcanic ash natural crystals are rarely fluoresecent artificial crystals may range from fluorescent green to fluorescent yellow

Answer 82

zincite

Question 83

crystal system of zincite

Answer 83

hexagonal

Question 84

calcium titaniu, oxide niobium can substituye for up to 44.9 % titanium by weight and cerium and sodum can substitute for calcium. crystals are pseudoctahedral occurs in rich in iron and magnesium occurs in contact metamorphic rock found in carbonaceous chondrite meteorites

Answer 84

perovkite

Question 85

crystal system of perovskite

Answer 85

orthorhombic

Question 86

major source of titanium black streak nonman=gmetic accessory in kimberlite rocks

Answer 86

ilmenite

Question 87

crystal system of ilmenite

Answer 87

hexaginal

Question 88

most important ore of iron used in pigment

Answer 88

hematite

Question 89

steel gray crystals and coarse grained varieties with a brilliant metallic luster

Answer 89

specular hematite

Question 90

petal like arrangements

Answer 90

iron rosed

Question 91

form of ground hematite

Answer 91

rouge

Question 92

crystal system of hematite

Answer 92

hexaginal

Question 93

major ore of iron economically important deposits occur in silica poor intrusions of igneous rocks in banded ironstones

Answer 93

magnetite

Question 94

covered with iron fillings are known

Answer 94

lodestones

Question 95

magnetite crystal system

Answer 95

cubic

Question 96

rich in yttrium bear the prefix beta tungsten

Answer 96

fergusonite

Question 97

crystal system of fergusonite

Answer 97

tetragonal

Question 98

barium manganese oxide formerly grouped together under the name psilomelane forms as an alteration product of other manganese minerals an ore of manganese forms in bogs and lakes and shallow seas

Answer 98

romanechite

Question 99

crystal system of romanechite

Answer 99

orthorhombic

Question 100

forms in syenites certain pegmatites

Answer 100

corundum the blue zoning are due to the traces of titanium

Question 101

common in sapphire

Answer 101

colorzoning

Question 102

corundum crystal system

Answer 102

hexagonal

Question 103

prismatic kashmir rubies embedded in a rock matrix

Answer 103

ruby in matrix

Question 104

include gahnite franklinite chromite

Answer 104

spinel

Question 105

red spinel is called

Answer 105

ruby spinel and this is due to the presence of chromium

Question 106

crystal system of spinel

Answer 106

cubic

Question 107

a zinc aluminum oxide and is a member of the spinel grop lithium pegmatites and gem clear nodules forms from the low grade metamorphisms of bauxite and found in placer deposits

Answer 107

gahnite

Question 108

crystal system of gahnite

Answer 108

cubic

Question 109

where is the blue octahedron of gahnite from

Answer 109

franklin, new jersey usa

Question 110

small amounts of iron and zinc may substitute for manganese forms in hydrothermal veins assoc manganese oxides such as pyrolusite romanechite ore of manganese added to aluminum and magnesium alloys yo improve corrosion resistance

Answer 110

hausmannite

Question 111

hausmannite crystal system

Answer 111

tetragonal

Question 112

iron chromium oxide crystalline inclusion in diamond can contain some magnesium and aluminum accessory mineral in iron and magnesium rich laters are preserved when the sed rocks metamorphose to form serpentine

Answer 112

chomite

Question 113

chromite cyrystal systems

Answer 113

cubic

Question 114

LIST OF OXIDES

Answer 114

chromite hausmannite ice anatase brookite rutile cassiterite pyrolusite chrysoberyl columbite-tantalite uraninite samarskite pyrochlore microlite cuprite zincite perovskite ilmenite hematite magnetite fergusonite romanechite corundum spinel gahnite hausmannite chromite

Question 115

formerly called limonite

Answer 115

goethite

Question 116

mixture of aluminum hydroxide mineals called bauxite in southeastern france

Answer 116

les baux de provence

Question 117

important ore of aluminum forms as extensive shallow deposits

Answer 117

bauxite

Question 118

occur in stalactitic an iron oxide hydroxide and manganese can substiture for up to 5% of the iron occur in gossan or iron hat also occurs in a form called bog iron ore can be produced by living organisms

Answer 118

goethite

Question 119

goethite crystal system

Answer 119

orthorhombic

Question 120

important ore of manganese hydrated manganese oxide low temp replacement deposits with goethite hot spring manganese deposits alters to pyrolusite

Answer 120

manganite

Question 121

manganite crystal system

Answer 121

monoclinic

Question 122

scattering and crackles and depreciates under high heat widespread in bauxite and laterite

Answer 122

diaspore

Question 123

rare transparent type of diaspore crystal turkey

Answer 123

zultanite

Question 124

diaspore crystal system

Answer 124

orthorhombic

Question 125

a magnesium hydroxide low temp hydrothermal veins c if medical magnesium as a fire retardant

Answer 125

brucite

Question 126

fibrous variety of brucite

Answer 126

nemalite

Question 127

brucite crystal system

Answer 127

hexagonal

Question 128

list of hydroxides

Answer 128

bauxite goethite manganite diaspore brucite

Question 129

example of oxyhydroxyl-halides

Answer 129

atacamite

Question 130

hydrated potassium and magnesium chloride forms in the upper layers of marine evaporite salt deposits russia's most important source of magnesium and caustic potash a potassium hydroxide is produced from this. important source of potash which is used in fertilizers and caustic potash

Answer 130

carnallite

Question 131

carnallite crystal system

Answer 131

orthorhombic

Question 132

aircraft could not fly without it essential ingredient in aluminum production icelike appearance used to separate aluminum an indispensable metal in aviation from its ores

Answer 132

cryolite

Question 133

crystal system of cryolite

Answer 133

monoclinic

Question 134

used to be known as fluorspar use in iron smelting to improve the fluidity of slags and the refining of metals

Answer 134

fluorite

Question 135

veins banded purple white and yellow fluorite

Answer 135

blue john

Question 136

fluorite crystal system

Answer 136

cubic

Question 137

orange color comes from inclusions of hematite while the blue and purple colors indicate defects in the crystal structure may form hopper crystals widespread in saline evaporite deposits

Answer 137

halite

Question 138

halite crystal system

Answer 138

cubic

Question 139

manufacture of potassium compounds such as potash fertilizers used to manufacture metallic potassium firstdiscovered in mt. vesuvius italy sal digestivus slyvii

Answer 139

slyvite

Question 140

mercury chloride omorfi meaning beautiful and honey, allusion to its sweet taste although it is toxic referred to as horn quicksilver and horn mercury fluoresces brick red used as a laxative and a disinfectant as well as in the treatments of syphilis from the 16th century an ore of mercury and in insecticides and fungicides

Answer 140

calomel

Question 141

crystal systems of calomel

Answer 141

tetragonal

Question 142

LIST OF HALIDES

Answer 142

carnallite cryolite fluorite halite sylvite calomel

Question 143

what is the match witherite strontianite siderite rhodochrosite smithsonite cerussite

Answer 143

barium strontium iron manganese zinc lead

Question 144

those with shallow rhombohedral terminations are called

Answer 144

nailhead spar

Question 145

highly transparent calcite is called

Answer 145

optical spar

Question 146

occur most often as scalenohedra and are commonly twinned sometimes forming heart shaped butterfly twins

Answer 146

calcite

Question 147

virtually all ancient egyptian alabaster such as theat used to make this small sphinx was actually

Answer 147

calcite

Question 148

crystals with steep rhombohedral or scalenohedral terminations

Answer 148

dogtooth spar

Question 149

calcite crystal system

Answer 149

hexagonal

Question 150

tabular prismatic or needlelike chisel shaped ends

Answer 150

aragonite

Question 151

found in the oxideized zones of ore deposits and in evopites

Answer 151

aragon te

Question 152

coral like aragonite crystals on rock matrix

Answer 152

flos ferri

Question 153

calssic aragonite cyclic twin

Answer 153

cyclic twin

Question 154

crystal system of aragonite

Answer 154

orthorhombic

Question 155

barium carbonate resulting from the alteration of baryte specimens are heavy for their size due to the presence of the high density element barium more soluble in acids

Answer 155

witherite

Question 156

crystal system of witherite

Answer 156

orthorhombic

Question 157

occurs as a replacement deposit in limestone affected by magnesium bearing solutions in talc schists

Answer 157

dolomite

Question 158

crystal system of dolomite

Answer 158

hexagonal

Question 159

carbonate of magnesium forms mainly as an lateration product in magnesium rich rocks such as peridotites can occur as primary mineral in limestones and talc or chlorite schists in ocanic salt deposits also found in some meteorites catalyst and filler in the production of sythetic rubber and in teh manufacture of chemicals and fertilizers

Answer 159

magnesite

Question 160

crystal system of magnesite

Answer 160

hexagonal

Question 161

known since antiquity white lead pigment adter galena most common ore of lead star shpaed or reticulated netlike masses randomly grown prismatic crystals known as jack straw formed ny the action of carbonated water on the other lead minerals particularly galena and anglesite

Answer 161

cerussite

Question 162

delicate needlelike crystals

Answer 162

jack straw cerussite

Question 163

crystal system of cerussite

Answer 163

orthorhombic

Question 164

carbonate hydroxide blue pigment massive azurite used for ornamental purposes sometimes called

Answer 164

chessylite

Question 165

azurite crystal systems

Answer 165

monoclinic

Question 166

manganese carbonate rosy of color forms dogtooth or rhombohedral crystals like calcite found in hydrothermal ore veins with sphalerite galena fluorite and manganese oxides. occurs in metamorphic deposits sometimes mined as an ore of manganese

Answer 166

rhodochrosite

Question 167

crystal system of rhodocrhrosite

Answer 167

hexagonal

Question 168

calcium carbonate with varying amounts of iron and mg and mn in its structure many specimens are fluorescent forms as secondary mineral from the action of iron and amgnesium bearing fluids onlimestone waster mineral in hydrothermal ore deposists low grade metamorphosed ironstons banded ironstone formations and iron ore deposits with siderite

Answer 168

ankerite

Question 169

crystal system of ankerite

Answer 169

hexagonal

Question 170

formerly known as chalybite singel crystals up to 6 in 15 cm long are doung in quebec canada sed rocks occus in concretions and in thin beds with coal

Answer 170

siderite

Question 171

crystal system of siderite

Answer 171

hexagonal

Question 172

honeycombed aggregates

Answer 172

dry bone ore

Question 173

found in oxidation zones of many zinc ore deposits and in adjacent calcareous rocks

Answer 173

smithsnonite

Question 174

a mass of earthy smithsonite on a rock matrix

Answer 174

white smithsonite

Question 175

translucent mass of botryoidal smithsonite rests on a rock matrix

Answer 175

blue and green smithsonite

Question 176

crystal system of smithsonite

Answer 176

hexagonal

Question 177

earliest ore of copper been mined in sinai occurs in teh altered zones of copper deposits where it is usually accompanied by lesser amounts of azurite single masses that weighed up to 51 tons found in ural mountains

Answer 177

malachite

Question 178

cyrstal system of malachite

Answer 178

monoclinic

Question 179

list of carbonates

Answer 179

calcite aragonite witherite dolomite magnesite cerussite azurite rhodocrhosite ankerite siderite smithsonite malachite

Question 180

sodium in borax and calcium in colemanite volcanic activity flow into a closed basin where evaporation takes place occur in desert regions

Answer 180

borates

Question 181

used to give a green color to fireworkds in place o the toxic barium

Answer 181

boron carbide

Question 182

chalky mineral tinalconite evaporite foremd in dry lake beds powdered mienrals were fused with the beads and color change key component of soaps

Answer 182

borax

Question 183

important economic borate mineral has number if habits found in dense veins of parallel fibers known as television stone found inplaya lakes and other evaporite basins commonly occurs in coelmanite

Answer 183

ulexite

Question 184

unusual property of the form ulexite shown above is its ability to transmite images

Answer 184

television stone

Question 185

crystal system of ulexite

Answer 185

monoclinic

Question 186

calcium borosilicate hydroxide forms a cauliflowerlike sometimes sold as turquoise assoc with other boron mienrals such as kernite and borax

Answer 186

howlite

Question 187

crystal system of howlite

Answer 187

monoclinic

Question 188

important source of boron short prismatic or equant crystals un nodules found in playas and other evaporite deposits where it replaces other borate minerals such as borax and ulexite borosilicates derived from colemanite make glass that is resistant to chemicals and electricity and heat

Answer 188

colemanite

Question 189

crystal system of colemanite

Answer 189

monoclinic

Question 190

list of borates

Answer 190

borax ulexite howlite colemanite

Question 191

celestine mostly mine for collectors

Answer 191

mineral rich madagascar

Question 192

fluoresces yellow under uv light used as an ore of leadforms in the oxidation zones of lead deposits alteration product of galena and formed when galena comes into contact with sulfate solutions found in concentric layers with a core of unaltered galena

Answer 192

anglesite

Question 193

crystal system of anglesite

Answer 193

orthorhombic

Question 194

calcium sulfate one of the major minerals in evaporite deposits alters to gypsum constituent of cap rocks above salt domes that acts as reservoirs for natural oil occurs in volcanic fumaroles and in seafloor hydrothermal chimneys

Answer 194

anhydrite

Question 195

crystal system of anhydrite

Answer 195

orthorhombic

Question 196

barium sulfate barite high sg heavy spar golden comes from south dakote cockscomb or crested aggregates and desert roses rosette aggregates of crystals are common accesory mineral in lead and zinc veins found in sed rocks and clay deposits

Answer 196

barite

Question 197

crystal system of barite

Answer 197

orthorhombic

Question 198

heavenlt evaporite deposits and can also be precipitated directly from seawater and an ore of strontium

Answer 198

celestine

Question 199

crystal system of celestine

Answer 199

orthorhombic

Question 200

twinned crystals are common and frequently form charac fishtails swordlike selenite gypsum crystals 6 1/2 2m

Answer 200

gypsum

Question 201

comes from the cave of swords in mexico

Answer 201

selentine

Question 202

crystal system of gypsum

Answer 202

monoclinic

Question 203

hydrous iron sulfate iron analog of the copper sufate chalcanthite colorless become green to blue as copper increasingly substitute to iron secondary mineral formed by the oxidation of pyrite altered zones of pyrite bearing rocks and climates in coal alteration product of marcasite used in water purification as a coagulant and also fertilizer

Answer 203

melanterite

Question 204

crystal system of melanterite

Answer 204

monoclinic

Question 205

hydrated copper sulfate blue vitriol occurs in veinlets and as massive and stalactic aggregates oxidation of chalcopyrite water soluble mineral absorbs water

Answer 205

chalcanthite

Question 206

crystal system of chalcanthite

Answer 206

triclinic

Question 207

hydrous copper sulfater prismatic or needle like crytals found in tufts and druse crusts and as fien grained masses forms in the oxidation zones of copper deposits assoc w azurite abundant enough to be an ore of copper

Answer 207

brochantite

Question 208

crystal system of bronchantite

Answer 208

monoclinic

Question 209

epsom salts magnesium sulfate mineral springs enar the town of epsom mg sulfate occurs in solution in seawater saline lake water and spring water water evaporates epsomite precipitates found with coal and limestone cabes

Answer 209

epsomite

Question 210

crystal system of epsomite

Answer 210

orthorhombic

Question 211

sodium calcium sulfate pseudomorphs form when other minerals such as calcite replace it slitght saline tase turns white in water and fuses to a white enamel found in cavities basaltic igneous rock and in volcanic fumaroles

Answer 211

glauberite

Question 212

crystal system of glauberite

Answer 212

monoclinic

Question 213

list of sulfates

Answer 213

anglesite anhydrite barite celestine gypsum melanterite chalcanthite brochantite epsomite glauberite

Question 214

bright orange to red in color saffron oxidation zone of lead ore and presence of low silica igneous rocks that serve as the source of chromium official mineral emblem of tasmania

Answer 214

crocoite

Question 215

almost reticulated growth of crocoite

Answer 215

atypical crocoite

Question 216

crystal system of crocoite

Answer 216

monoclinic

Question 217

2nd most common molybdenum mineral show different terminations on each due to twinning 2ndary mineral formed in the oxideized zones of lead and molybdenum

Answer 217

wulfenite

Question 218

crystal system of wulfenite

Answer 218

tetragonal

Question 219

important ore of tungsten manganese end member of manganese iron solid solution series thermal veins at high tem alluvial gravels used in ligh bulb filaments

Answer 219

hubnerite

Question 220

crystal systems of hubnerite

Answer 220

monoclinic

Question 221

principal ore of tungsten iron tungsten iron end member of a solid solution series it forms with hubnerite the manganese end member constitute the mineral formerly called wolframite rocket nozzles such as those used in saturn v made of tunsten steel

Answer 221

ferberite

Question 222

crystal system of ferberite

Answer 222

monoclinic

Question 223

calcium tungstate they fluoresce vivid bluish white under a short wave uv light assoc with native gold fluorescence search for gold deposits contact with metamorphic deposits in hydrotherman veins formed at high temperatures major source of tungsten

Answer 223

scheelite

Question 224

crystal system of scheelite

Answer 224

tetragonal

Question 225

list of chromates

Answer 225

crocoite wulfenite

Question 226

list of tungstates

Answer 226

hubnerite ferberite scheelite

Question 227

most numerous of the 3 groups more than 200 known minerals 1:4 raion crystallize from aqueous fluids fertilizers

Answer 227

phosphates

Question 228

a phosphate uranium vanadium and potassium

Answer 228

carnotite colorado plateau

Question 229

occur in marbles skarns and other metamorphic rocks

Answer 229

apatite

Question 230

crystal system of apatite

Answer 230

monoclinic

Question 231

calcium uranium phosphare yellow i ncolor floresce green under ultraviolet light formed in teh oxidation zones of uranium ore bodies as an alteration product of uraninite uranium bearin minerals midly heated tetragonal autunite dehydrates into orthorhombic

Answer 231

autunite

Question 232

crystal system of autunite

Answer 232

tetragonal

Question 233

cerium phosphate yellowish reddies accessory mineral in granites

Answer 233

monazitea

Question 234

accumulate as monazite sands

Answer 234

detrital monazite

Question 235

used in oil refining

Answer 235

lanthanum

Question 236

used in coloring glass

Answer 236

neodymium

Question 237

plishin glass stone and gemstones

Answer 237

cerium oxide

Question 238

crystal system if monazite

Answer 238

monoclinic

Question 239

minor ore of lead forms a continuous chemical series with mimetite phosporus and arsenic replace each otther 2ndary mineral in the oxidized zones of lead deposits with galena goethite pseudomorphs of pyromophite after galena

Answer 239

pyromorphite

Question 240

crystal system of pyromorphite

Answer 240

hexagonal

Question 241

uranium bearing mineral and a minor ore of uranium chemically unstable with increased hydration it transforms to metatorbernite radioactive 2ndary mineral formed in teh oxidation zones of deposits containing uranium and copper and is assoc with other phosphate minetals forms as an alteration product or uraninite

Answer 241

torbernite

Question 242

crystal systems of torbernite

Answer 242

tetragonal

Question 243

fluoridated manganes phpsphates iron partially replaces manganese 3 cleavages oriented at right angles to each other chestnute brown exhibit different colors when viewed from different dircetions

Answer 243

triplite

Question 244

crystal system of triplite

Answer 244

monoclinic

Question 245

hydrous copper aluminum phosphate mesopotamia arid envi derived form teh decompostion of apatite and some copper sulfides

Answer 245

turquosie fav of chinese stone carvers

Question 246

crystal system of turquoise

Answer 246

triclinic

Question 247

lead chlorovanadate bright red colors also needlelike 2ndary mineral in oxidized ore deposits containing leaf high stress tools such this spanner

Answer 247

vanadinite

Question 248

crystal system of vanadinite

Answer 248

hexagonal

Question 249

variscia old name of the german district of voightlant plae to grenn action of phosphate rich waters on aluminous rocks assoc with apatite waveleite semiprecious used carvings abosrb body oils variquoise

Answer 249

variscite

Question 250

crystal system of variscite

Answer 250

orthorhombic

Question 251

starlike groups pale blue indigo blue on oxidation source of the sought after blue paint pigment blue orcher weathered zones of iron ore and phosphate deposits and in complex granite pegmatites

Answer 251

vivianite

Question 252

crystal system of vivianite

Answer 252

monoclinic

Question 253

2ndary mineral that forms in low grade aluminous metamorphic rocks phosphorous sulfate derived from wavelitte and other phosphates is a major component of matches

Answer 253

wavelitte

Question 254

crystal system of wavelitte

Answer 254

orthorhombic

Question 255

list of phosphates

Answer 255

apatite autunite monazite pyromorphite torbernite triplite turquoise vanadinite variscite vivianite wavellite

Question 256

bright to lemon yellow or greenish yellow found as powdery 2ndary mineral fromed by the alteration of primary uranium vanadium minerals occurs in sandstones fossil wood or other fossilized vegetable matter pure contains 53% uranium by weight generate nuclear energy mined for vanadium and radium world war II onward

Answer 256

carnotite vanadates

Question 257

crystal system of carnotite

Answer 257

monoclinic

Question 258

zinc arsenate hydroxide fluresce green under uv light 2ndary mineral in oxideized zones of zinc and arsenic deposits

Answer 258

adamite

Question 259

crystal system of adamite

Answer 259

orthorhombic

Question 260

to incline to break oblique basal cleavage forms as 2ndary mineral in teh oxidized of deposits containing copper sulfides

Answer 260

clinoclase

Question 261

crystal system of clinoclase

Answer 261

monoclinic

Question 262

leaf translucent blue green occurs in hydrothermal copper deposits cuprite statue of lamma used as an ore of copper vivid blue green in color

Answer 262

chalcophyllite

Question 263

crystal system of chalcophyllite

Answer 263

hexagonal

Question 264

important tool for prospectors looking for cobalts and silver depostis bright purplish pink color presence of vobalt cobalt bloom cobalt arsenate hydrate forms a chemical replacement series with annabergite in wc nickel replaces cobalts in struture lighter colors inidating high nickel content 2ndary mineral found in the oxidized zoned of cobalt nickel arsenic deposits

Answer 264

erythrite

Question 265

crystal system of erythrite

Answer 265

monoclinic

Question 266

end member of a solid solution series with pyromorphite resemblance to pyromorphite 2ndary minerals wc forms in the oxideized zone do lead deposits and in other localities

Answer 266

mimetite

Question 267

massive and crystalline varieties of campylite set in a rock matrix

Answer 267

campylite

Question 268

crystal system of mimetite

Answer 268

hexagonal

Question 269

hydrated iron arsenate garliclike drusy coatins are common hydrothermal veins hot spring deposits and oxidized zones of arsenic rich ore bodies pharmacisuderite

Answer 269

scorodite

Question 270

crystal system of scorodite

Answer 270

orthorhombic

Question 271

25 % known of all minerals 95 percent of the crust and upper mantle of earth

Answer 271

silicates

Question 272

crystal system of quartz

Answer 272

hexagonal

Question 273

crystal system of quartz chalcedony

Answer 273

hexagonal

Question 274

red orange chalcedony

Answer 274

carnelian

Question 275

crystal system of chalcedont agate

Answer 275

ehxagonal

Question 276

concentric bands of co or resembling an aerial view of an ancient fortress

Answer 276

fortification agate

Question 277

silica rich waters at low temp percolate through cracks and fissures in other rocks

Answer 277

quartz jasper

Question 278

crystals of glauberite replaced by opal

Answer 278

opal psedumorph

Question 279

moonstone variety of orthoclase creates schiller effecr

Answer 279

orthoclase

Question 280

crystal system of orthoclase

Answer 280

monoclinic

Question 281

quartz rich volcanic rocks such as rhyolite phonolite and trachyte formed at lpressure and high temp forms sphereular masses of needlike crystals in obsidian called snowflake obsidian

Answer 281

sanidine

Question 282

crystal system of sanidine

Answer 282

monoclinic

Question 283

blue green microcline

Answer 283

amazonite

Question 284

crystal system of microcline

Answer 284

triclinic

Question 285

type of the igneous rock syenite called larvikitelarge schillerized crystals of prized ornamental stone

Answer 285

anorthoclase

Question 286

crystal system of anorthoclase

Answer 286

triclinice

Question 287

crystal system of albite

Answer 287

triclinic

Question 288

most common of the plag felds

Answer 288

oligoclase

Question 289

charac by schiller effect

Answer 289

labradorite

Question 290

gem quality of labradorite from finalnd known as

Answer 290

spectrolite

Question 291

cloud most common feldspathoids

Answer 291

nepheline

Question 292

crystal system of nepheline

Answer 292

hexagonal

Question 293

used as the firsr eyeshadow

Answer 293

lazurite

Question 294

crystal system of lazurite

Answer 294

cubic

Question 295

found onmt. vesuvius floresce bright orange under uv light

Answer 295

sodalite

Question 296

crystal system of sodalite

Answer 296

cubic

Question 297

matt white k rich and silica poor igneous rocks foung with nepheline sodalite natrolite

Answer 297

leucite

Question 298

crystal system of leucite

Answer 298

cubic tetragona

Question 299

list of feldsphathoids

Answer 299

nepheline lazurite sodalite

Question 300

sodium content fluoresce orange ti yellow under uv light produces an electric charge found in cavities or fissures in basaltic rocks

Answer 300

natrolite

Question 301

crystal system of natrolite

Answer 301

orthorhombic

Question 302

crystal system of heulandite

Answer 302

monoclinic

Question 303

chemically intermediate in compostion between scolecite and antrolite indentical similar to scolecite and natrolite found in cavities in basalts found hydrothermal veins

Answer 303

mesolite

Question 304

forms hairlike tuffs such as in this specimen known as

Answer 304

cotton stone

Question 305

crystal system of mesolite

Answer 305

monoclinic

Question 306

hailstone occur as distorted cubes or pseudorhombohedrons multiple twins permits small molecules to pass throuogh while preventing the passage of larger molercules filter methane from gases meitted by decatying otagnic waste matter

Answer 306

chabazite

Question 307

crystal system of chabazite

Answer 307

triclinic

Question 308

formerly feldspathoids sodium aluminum silicate weak electrical charge that this mineral when heated and rubbed occurs in seams and cavities absorbs moisture silica dessicator

Answer 308

analcime

Question 309

crystal system of analcime

Answer 309

cubic

Question 310

serpentine minerlas

Answer 310

antigorite lizardite amesite

Question 311

2ndary minerals derived from the chemical alteration of olivine exposed such as along the crests and azes of great folds in island arcs alpine mountain chains sold as jade

Answer 311

serpentine

Question 312

fine grained serpentine

Answer 312

lizardite

Question 313

corrugated plates

Answer 313

antigorite

Question 314

variety of serpentine an ornamental stone

Answer 314

williamsite cabochon

Question 315

crystal system of serpentine

Answer 315

monoclinic triclinic

Question 316

list of zeolites

Answer 316

leucite natrolite heulandite mesolite chabazite analcine

Question 317

occur as veins in altered peridotire other serpentine minerals

Answer 317

chrysotile

Question 318

crystal system of chrysotile

Answer 318

monoclinic or orthorhombic

Question 319

dense high purity talc is called

Answer 319

steatite

Question 320

metamorphic mineral founc in veins and magnesium rich rocks assoc with seprentine temolite forsterite alteration product of silica poor igeous silica poor igenous rocks

Answer 320

talc`

Question 320

crystal system of talc

Answer 320

triclinc or monoclinic

Question 321

aluminum silicate hydroxide exfoliate when heated found in coarse laths and radiating aggreagates forms by the metamorphism of aluminum rich sed rocks good insulator

Answer 321

pyrophyllite

Question 322

crystal system of pyrophyllite

Answer 322

triclinic or monoclinic

Question 323

isingglass and fine grained muscovite called

Answer 323

sericite or white mica

Question 324

btight green specimens rich in chromium are

Answer 324

fuchsite

Question 325

crystal system of muscovite

Answer 325

monoclinic

Question 326

crystal system of glauconite used to identify continental sehld deposits

Answer 326

monoclinic

Question 327

solid solution series with the mineral annite as the iron end member and phologopite as teh mg end memeber used to date rocks

Answer 327

biotite

Question 328

crystal system of biotite

Answer 328

monoclinic

Question 329

light mica used to make glass and enamels major source of the rare alkali metals rubidium and cesium

Answer 329

lepidolite

Question 330

crystal system of lepidolite

Answer 330

monoclinic

Question 331

large pseudomorphs replacing biotite as small particles in soils and ancient sed good growing medium for new plants retains water offers good aeration

Answer 331

vermiculite

Question 332

crystal system of vermiculite

Answer 332

monoclinic

Question 333

forms from volcanic ash that has weatherd in the presence ofwater

Answer 333

bentonite

Question 334

crystal system of bentonite

Answer 334

monoclinic

Question 335

raw material for brick pottery and tiles dickite nactire and ahlloysite natural product of alteration of mica plag and sodium and potassium feldspar under the influence of water

Answer 335

kaolinite

Question 336

crystal system of kaolinite

Answer 336

triclinic

Question 337

fine grained aggreagtes seen xrd used as na indicator of metamorhpic grade in clay bearing metamorphic rocks funerary temple

Answer 337

illite

Question 338

crystal system of illite

Answer 338

monoclinic

Question 339

soldering gold copper aluminum silicate ore of copper

Answer 339

chrysocolla

Question 340

crystal system of chrysocolla

Answer 340

orthorhombic

Question 341

mineral separates into flakes or layers when it is heated occurs with zeolite minerals

Answer 341

apophyllite

Question 342

crystal system of apophyllite

Answer 342

tetragonal

Question 343

spherical masses of phrenite occuring white calcite on a rock matrix

Answer 343

green phrenite

Question 344

crystal system of phrenite

Answer 344

orthorhombic

Question 345

list of phyllosilicates

Answer 345

serpentine chrysotile talc pyrophyllite muscovite glauconite biotite lepidolite vermiculite bentonite kaolinite illite chrysocolla apophyllite phrenite

Question 346

important mienral in lunar rocks and alos occurs in meteorites found in lavas and smaller intrusive temperature of limits flat areas of the moon

Answer 346

pigeonite member of pyroxene group

Question 347

crystal system of pigeonite

Answer 347

monoclinic

Question 348

sodium iron siliciate also known as acmite needlelike prism faces are oftern lustruous pyroxene solid solution series with hedenbergite and diopside found inn mg and iron rich syenitic pegmaites

Answer 348

aegirine

Question 349

crystal system of aegerine

Answer 349

monoclinic

Question 350

occurs in peridotites kimberlites found in metamorphosed silica rich limestones shromium rich the emerald green variety of this

Answer 350

diopside member of pyroxene family

Question 351

blue crystalline variant of diopside

Answer 351

violane

Question 352

brightness shiny solid solution series diopside hedenbergite end members dark coloted lunar basalts meteorites all pyroxene are identified as this

Answer 352

augite

Question 353

crystal system of augite

Answer 353

monoclinic

Question 354

reduced to ashes strong pleichroism ore of lithium eucryptite latgest single crystal minerals south dakota 90 tons wirgh lithium fluoride used to add strentght to glass

Answer 354

spodumene

Question 355

lavender gemstone of spodumene

Answer 355

kunzite

Question 356

green gem variety of spodumene

Answer 356

hiddenite

Question 357

crystal system of spodumene

Answer 357

monoclinie

Question 358

pure is hwite in color green due to iron and lilac by mn and iron made up interlocking blocky granular crystals and commonly sugary granular texture nephrite tremolite or actinolite

Answer 358

jadeite

Question 359

rich green specimen of jade

Answer 359

imperial jade

Question 360

crystal system of jadeite

Answer 360

monoclinic

Question 361

results of the contact of metamorphism of limestone ogneous rocks contaminated by carbon rich inclusions regionally metamorphosed rocks in schists ceramis

Answer 361

wollastonite

Question 362

crystal system of wollastonite

Answer 362

triclinic

Question 363

coated or veined with mn oxides mg ores in india

Answer 363

rhodonite

Question 364

crystal system of rhodonite

Answer 364

triclinice

Question 365

clove minetals clove brown to dark forms in regional meta of iron and mg rich rocks silica poor igneous rocks referred to as asbestots

Answer 365

anthophyllite

Question 366

crystal system of antophyllite

Answer 366

orthorhombic

Question 367

compact form of either tremolite actinolite calc mg in actinolite somg mg is replcaed by iron dark green whrn rich in iton and creamy white when rich in mg tougher than steel regionally metamorphosed areas where dolomites are intruded by iron and mg

Answer 367

nephrite

Question 368

crystal system of nephrite

Answer 368

monoclinic

Question 369

FORMS IN metamorphic rocks gneisses

Answer 369

hornblende

Question 370

crystal system of hornblende

Answer 370

monoclinic

Question 371

calcium mg silicate solid solution seies with ferroactinolite increasing iron colorless to white in pure tremolite to grray used commercially as asbstos known as nephrite jade it is massive and fine grained product of both thermanl and reginal metamorphism indicator of metamorphic grade converts to dipside

Answer 371

tremolite

Question 372

crystal system of tremolite

Answer 372

monoclinic

Question 373

middle of solid solution series of calcium iron mg silicates asbetos fine grained avtinolite and tremolite called nephrite jade an amphibole minerals forms low and medium grade thermal and regional

Answer 373

actinolite

Question 374

crsytals of actinilite have been powedered

Answer 374

gray green acitnolite

Question 375

crystal system of actinolite

Answer 375

monoclinic

Question 376

occurs in schists high p metahmorphism low t acc by jadeite

Answer 376

glaucophane

Question 377

crystal system of glaucophane

Answer 377

monoclinic

Question 378

asbestos grayish to blue known as alisite snotes used in teh sport of curling crocidolite tigers eye when silica sautrated

Answer 378

riebeckite

Question 379

crystal system of riebeckite

Answer 379

monoclinic

Question 380

list of inosilicates

Answer 380

pigeonite aegirine diopside augite spodumene jadeite wollastonite rhodonite anthophyllite nephrite hornblende tremolite actinolite glaucophane riebeckite

Question 381

water sapphire pleochroic found in gneisses important in production used in ornamnets

Answer 381

cordierite

Question 382

polished gem of cordierite

Answer 382

iolite

Question 383

crystal system of cordierite

Answer 383

orthorhombic

Question 384

11 minerals include elbaite schorl dravite and liddicoacite indicolite nlue achroite colorless found in pegmatites

Answer 384

tourmaline

Question 385

most common tourmaline minerla

Answer 385

schorl

Question 386

gem qual of tourmaline

Answer 386

elbaite

Question 387

crystal system of tourmaline

Answer 387

hexagonal or trigonal

Question 388

include heliodor moragnite godhenite found in granites

Answer 388

beryl

Question 389

variant of crystas shades of pink

Answer 389

morganite

Question 390

crystal system of beryl

Answer 390

hexagonal or trigonal

Question 391

resemble emerald forms in areas copper veins altered oxidation

Answer 391

dioptase

Question 392

crystal system of dioptase

Answer 392

hexagonal

Question 393

list of cyclosilicates

Answer 393

cordierite tourmaline beryl dioptase

Question 394

formerly called calamine means crsytalline form grouped in fan shaped green fluoresence in shortwave uv ligh and weak light pink fluorescene in longwave uv light 2ndary mineral lateration zones of zinc deposits half zinc weight

Answer 394

hemimorphite

Question 395

crystal system of hemimorphite

Answer 395

orthorhombic

Question 396

axehead shape of its crystals occur as rosettes clove broen tinzenite

Answer 396

axinite

Question 397

crystal system of axinite

Answer 397

triclinic

Question 398

formerly called idiocrase mt vesuvius unusal bismuth bearing is bright red found in granulites

Answer 398

vesuvianute

Question 399

greenish blue copper bearing vesuvianite

Answer 399

cyprine

Question 400

crystal system of vesuvianite

Answer 400

tetragonal

Question 401

one side prism is always wider thean the others needle like product of alteration of plaf felds

Answer 401

epidote

Question 402

long striated crystals from peru

Answer 402

pistachio epidote

Question 403

crystal system of epidote

Answer 403

monolcinic

Question 404

calcium aluminum silicate hydrozxide mistaken for sapphire charac of regional metamorphism and hydrothermal alteration ig igenous rocks

Answer 404

zoisite

Question 405

lilac blue to sapphire blue variety of zoisite

Answer 405

tanzanite

Question 406

massive pinkish red variety

Answer 406

thulite

Question 407

crystal system of zoisite

Answer 407

orthorhombic

Question 408

list of sorosilicates

Answer 408

hemimorphite axinite vesuvianite epidote zoisite

Question 409

crystal system of olivine

Answer 409

orthorhombic

Question 410

crystal system of zircon

Answer 410

tetragonal

Question 411

means fire high refractive index fluorine bearing found in river deposits worlds largest topaz weitghd 36,000 carats

Answer 411

topaz

Question 412

crystal system of topaz

Answer 412

orthorhombic

Question 413

formerly called sphene calcium titanium silicate wedge shapedcolor dipersion higher than diamond

Answer 413

titanite

Question 414

crystal system of titanite

Answer 414

monoclinic

Question 415

yellowish gray variety of andalusite

Answer 415

chiastolite

Question 416

found in regional and low grade metamorphic rocks

Answer 416

andalusite

Question 417

crystal system of andalusite

Answer 417

orthorhombic

Question 418

crystal system of sillimanite

Answer 418

orthorhombic

Question 419

crystal system of kyanite

Answer 419

triclinic dark blue formed during regional meta of clay rich sed spark plugs

Question 420

cross shaped penetration occus in mica schists

Answer 420

staurolite monoclinic

Question 421

perfect cleavage pale green occurs innhydrothermal veins low t resembles certain types of beryle and topaz

Answer 421

euclase

Question 422

crystal system of euclase

Answer 422

monoclinic

Question 423

silicate iron and mg ,g substitute for iron in teh structure form complete solid solution series with manganhumite found with pyrite

Answer 423

humite

Question 424

crystal system of humite

Answer 424

orthorhombic

Question 425

mg aluminum garned high p hig pp silica poor igneouse

Answer 425

pyrope cubic

Question 426

most common almandine oinker red

Answer 426

almadine cubic

Question 427

mg aluminum silicate orange known as the alexandrite effect foujd grossular garnet contains iron found in mg rich meta rocks heaviest 6,720 carats

Answer 427

spessartine cubic

Question 428

calcium aluminum silicate grossular gooseberry

Answer 428

grossular cubic

Question 429

reddish brwon or pink grossular called

Answer 429

hessonite or cinnamon stone

Question 431

30% quartz and 70% feldspar

Answer 431

textured granite

Question 432

what is the reason of granodiorite's speciled appearance

Answer 432

biotite and hornblende

Question 433

this is called as welded tuff

Answer 433

ignimbrite

Question 434

hard daek and so fine that it has the appearance of streaky flint

Answer 434

ultramylonite

Question 435

mylonites are coarse grained and often sugary in appearance

Answer 435

blastomylonites

Question 436

formation of mylonite

Answer 436

zone of thrusts or low angle faults and fine grained produced recrystallization under pressure

Question 437

anpyrixene charac of hugh temp metamorphism

Answer 437

green omphacite

Question 438

brught res garent and contrasting bright green omphacite

Answer 438

eclogite

Question 439

found in xenoliths

Answer 439

ecologites

Question 440

also known as steatite

Answer 440

soapstone

Question 441

amphibole anthophylkite tremolite chlorites

Answer 441

soapstone lion dog

Question 442

granular metamorphic rock

Answer 442

marble

Question 443

conglomerate specimen from hertfordshire england

Answer 443

puddingstone conglomerate

Question 444

quartz sandstone with high lercentage of the green mica mineral glauconite from omin sglow oxygen poir marin envi rich in organic fetiruts contains shls and larger fossils originatii g frxal pellets weak and friable potassium content useful in radiometric age dati

Answer 444

greensand

Question 445

commin qlong the frint ranges of rocky mountains

Answer 445

arkose

Question 446

grindstones and millsotnes porous rock quartz greatest component originate in river deosits cross beddinh or current bedding

Answer 446

gritstone

Question 447

makes 70% of all sed rocks in earths crust

Answer 447

shale

Question 448

the fossil nautilus is preserved in

Answer 448

mudstone

Question 449

confused with igneous basaly it is a turbidite dirty sandstone poorly sorted

Answer 449

graywacke

Question 450

unsorted and unstratified rock material

Answer 450

tillite

Question 451

calcarwous mudstone lake chalk shallow watwr high carbonate precipiteated rract in dilute acid

Answer 451

marl

Question 452

formed by evaporation of ocean water in salinelakes and in salt pans occurs i some shales limestones and dolomitic limestones

Answer 452

rock gypsum

Question 453

interlayered with beds of shale limestone and dolomite

Answer 453

rock salt

Question 454

maec of fossilized remains called diatoms have hard shls made of opal most float surfaxe of the sea

Answer 454

diatomite

Question 455

is a nodular soil hardened iron and aluminum oxides and a source of bauxite

Answer 455

laterite

Question 456

banded iron formation

Answer 456

hammersley range of aurstralia

Question 457

pink tufa formatio is rhodope mountains bulgaria

Answer 457

stone wedding

Question 458

rounded mineral accretion knobbly itregualr surfaxe oriented parlel to the beddinh of their enclosing formed by the accumulation of silica in sediments and its subsequent solidificaiton pyrite commonly found as this

Answer 458

nodules

Question 459

nodule kf hydorues iron sulfate

Answer 459

melanterite

Question 460

nodule shows a variation in color due in differences in the extraneous material rnclosed while silica making the rock solidified

Answer 460

flint nodule

Question 461

chert that occurs in marly limestones or chalk flund in nodules often in bands parallel go the bedding planes breaks with conchoidal fracture form thick oebbles beds on beaches accumulate soils that are derived from chalk

Answer 461

flint

Question 462

earliest to hemined rocks

Answer 462

flint ac

Question 463

largest fossil from concretions

Answer 463

hadrosaur

Question 464

formed whrn crystals deposited from percolating brines filled cracks formed inseid a noduels as it shrank

Answer 464

septarian concretions

Question 465

small igneous silicate spheres

Answer 465

chondrules

Question 466

common type of stony irons which ar wiron meteorites one part olivine crystals to two parts metal

Answer 466

pallasites

Question 467

rocks that have been melted by meterorite impacts

Answer 467

tektites

Question 468

stony meteorite found in haryana ndia lacks chondrules small spheres of igneous minerals make chondrite

Answer 468

achondrite

Question 469

well preserved inpact crater in arizona desert usa 50,000 years ago

Answer 469

barringer crater

Question 470

how many lercent id iron meteorites

Answer 470

6%

Question 471

an iron meteorite with a prtially vaporized surface

Answer 471

fusion surface

Question 472

in iron meteorite the kamaxitw and taenite crystals in this iron meteorite occur as crosshatched lines forming

Answer 472

windmandstten pattern

Question 473

how many percent nickle in iron meteorite

Answer 473

25%

Question 474

minor anounts in iron meteorites

Answer 474

troilite graphite phosphides

Question 475

netalkic nickel iron make up 1% recovered meteorites

Answer 475

stony iron meteorite

Question 476

main group of stony iron meteorites

Answer 476

mesosiferites

Question 477

meteorite from chile with a melted surface resembling a thumbprint

Answer 477

thumbprint

Question 478

stony iron meteorite from the thiel mountains antartica

Answer 478

meteorite from antartica

Question 479

largely made up of pyroxend and olivine lesser amounts of glassy contain ca felds oldest and msot primitive astronomical bodes in solar system formed vy rapud hearing in the cloud dust

Answer 479

stony meteorie chondrules chondritic asteroids

Question 480

more rhan 80% of the meteorites fall on Earth

Answer 480

chondrites

Question 481

chondrules are absent represent crust developed separate mineral shells arlund iron nickel core impct of breccias on earth 20 from mars and 20 from moon

Answer 481

achondrites

Question 482

credited with behnh the first person to distinguish a systematic series of fossil assemblages lithofacies charac

Answer 482

alcide d' orbigny

Question 483

a function of depth h slope S and the nature of the fluid and indirectly a function of velocity of flow

Answer 483

boundary shear stress

Question 484

report geology of the henry mountains 1877

Answer 484

G.K. Gilbert

Question 485

g. k gilbert

Answer 485

grove karl gilbert

Question 486

encompasses the interrelationship of geologic materis with water field of engineering subsurface fluid hydrology

Answer 486

fetter

Question 487

type of pakcing porosity cubic rhombohedral 2 grian size

Answer 487

47.8% 26% 14%

Question 488

where is copper harbor conglomerate ans portage lake volcanics found

Answer 488

michigan

Question 489

large scale deformation took place in the southernchemisphere continents

Answer 489

pan african orogeny

Question 490

one of the oldest known complete ophiolites

Answer 490

the jormua mafic ultramafic complex infinland

Question 491

what is nect after rodinia

Answer 491

pannotia

Question 492

cysts of planktonic algae become common during meso and neoproterozoic hollow fossils

Answer 492

acritarchs

Question 493

iron fomation in michigan oldest known megafossils very likely singlle callwd bacterium

Answer 493

grypania

Question 494

oldest eukaryotes

Answer 494

bangiomorpha

Question 495

finabck reptiles have a characteristic sail on their back

Answer 495

pelycosaurs

Question 496

bolcanic peak 457 m in navajo tribal park in arizona composed of tuff breccia formed i late oligocene 25 mya

Answer 496

agathla peak

Question 497

this evaporite mineral ins mined from green river rocks for sofiym compunds

Answer 497

trona

Question 498

oldest known hominid

Answer 498

sahelanthropus tchadensis

Question 499

relaced enanderthals 35,000 to 10,000 skilled nomadic hunters cave painters

Answer 499

cro magnon

Question 500

pure albite melts or crystallizes at

Answer 500

1118 C

Question 501

pure albite melts or crystallizes at and pure anortite melts at

Answer 501

1118 C 1500 C

Question 502

albute and anorthite begins to melt at and the melting complete at

Answer 502

1220 1410

Question 503

melt composition is cooled it will begin to crystallize at and will be crystalline at

Answer 503

1410 1220

Question 504

pure fosterite melts at and fayalite melts at

Answer 504

1890 C 1205 C

Question 505

limited to metamorphosed mg rich limestone and dolomitic metamorphic tocks

Answer 505

pure forsterite

Question 506

found in ultrabasic igneous rocks dunits >90% by volume olivine and peridotites olivine +cpx+opx

Answer 506

Fo90-95

Question 507

found in basic igneous rocks likes basalts and gabbros and sometimes in andesites where jt occurs with plag and pyroxene

Answer 507

Fo60-90

Question 508

found in Fe rich siliceous tocks like rhyolites ans granites

Answer 508

Fo100-40

Question 509

CaSiO4 olivines Mn2SiO4

Answer 509

larnite tephroite

Question 510

commonly found in metamorphosed dolomites CaMgSiO4

Answer 510

monticellite

Question 511

garbets with no Ca are called and Al

Answer 511

pyralspite series

Question 512

Pyralspite series Mg3Al2Si3O12 Fe3Al2Si3O12 Mn3Al2Si3O12

Answer 512

pyrope almandine spessartine

Question 513

garnets with Ca in the A site are

Answer 513

ugrandite series

Question 514

ugrandite series Ca3Cr2Si3O12 Ca3Al2Si3O12 Ca3Fe+32Si3O12

Answer 514

uvarovite grossularite andradite

Question 515

basalts metamorphosed at high pressure

Answer 515

eclogite

Question 516

ultrabasic rocks containing olivine Opx Cpx and garnet

Answer 516

peridotites

Question 517

found in metamorphic rocks formed at high pressure and eclogites and perifotes most common garnet found in meatmorphic aluminous schists fount in mn rich metamorphic rocks like meta cherts

Answer 517

mg rich garnet Fe rich garnet mn rich

Question 518

southern leyte earthquakr mag nitude 5.8 struck when

Answer 518

may 6, 1991