Geology

Question 1

crystal habit - Three mutually perpendicular axes of different lengths.

Answer 1

Orthorhombic

Question 2

Combing elements from calcium 1 and 17 - what bond would it form

Answer 2

Ionic bond

Question 3

What mineral identification makes powder of the mineral?

Answer 3

Streak

Question 4

What is the most common mineral formed by life?

Answer 4

Calcium carbonate - CaCO3

Question 5

If I can scratch a mineral with my fingernail, what would the hardness be?

Answer 5

1-2

Question 6

How many p, n, e does oxygen have?

Answer 6

8,8,8

Question 7

If a mineral has a crystalline structure…

Answer 7

It has the same crystal structure

Question 8

What elements are present in a silica

Answer 8

Silica and oxygen

Question 9

When a mineral grows outward from a central point

Answer 9

Radial

Question 10

Three sided pyramid

Answer 10

Tetrahedral

Question 11

Crystals formed in sheets called

Answer 11

Tabular

Question 12

Bubbling crystal

Answer 12

Botryoidal, mammillary (boob rock)

Question 13

12-sided crystal

Answer 13

Dodecahedron

Question 14

If crystals form a coat on surface inside or outside

Answer 14

Laminae

Question 14

If crystals form a coat on surface inside or outside

Answer 14

Laminae

Question 15

If a crystal habit has 2 four-faced pyramids attached to it

Answer 15

Octahedral

Question 16

When a mineral forms from a substance

Answer 16

Crystal

Question 17

Two most abundant elements in earths crust

Answer 17

Oxygen + silica

Question 18

When crystal habit is branching across the surface

Answer 18

Dendritic

Question 19

long and flat crystals

Answer 19

Bladed

Question 20

Chemical name of silica (tetrahedral)

Answer 20

Si04

Question 21

Quartz on hardness scale

Answer 21

7

Question 22

What % of minerals are silicon based

Answer 22

75%

Question 23

Has bonds that are weak on one side and strong on the other

Answer 23

Perfect cleavage

Question 24

On periodic table, what number shows nucleus of the element

Answer 24

Atomic number

Question 25

non-silica mineral groups

Answer 25

native elements, carbonates, oxides, halides, sulfides, sulphates

Question 26

fibrous

Answer 26

thin, very long crystals

Question 27

crystals shaped like slanted cubes- a three-dimensional figure with six faces - axes are equal length

Answer 27

rhombohedral

Question 28

silicate mineral structure

Answer 28

tiny silicon in center, four balls of oxygen around make a pyramid

Question 29

ferromagnesian silicates

Answer 29

olivine, pyroxene, amphibole, biotite,

Question 30

ferromagnesian

Answer 30

containing iron and magnesium, dark colored, usually green, ultramafic, form deep in earth

Question 31

sulfide ex)

Answer 31

pyrite

Question 32

halides ex)

Answer 32

NaCl (table salt), fluorite, salts

Question 33

silica

Answer 33

tetrahedral shape

Question 34

majority mineral

Answer 34

63% feldspar

Question 35

6 sided crystal structure

Answer 35

hexagonal

Question 36

sulfates

Answer 36

gypsum, Epsom salts

Question 37

basalt pillars in

Answer 37

scotland - hexagonal shape

Question 38

special property of calcite

Answer 38

double refraction. light is divided, see two images, polarized

Question 39

ore of iron, tiny bubbles, fish eggs on rock

Answer 39

oolitic hematite

Question 40

quartz and obsidian don't have

Answer 40

cleavage, conchoidal fracture

Question 41

flourite

Answer 41

fluoresces under fluorescent light

Question 42

flourite hardness

Answer 42

3

Question 43

garnet and sapphire hardness

Answer 43

8/9