Mineral list 5 +

Question 1

Serpentine

Answer 1

Mg, Si, O, OH

Phyllosilicate

Black-green/olive - dark

Question 2

Talc

Answer 2

Mg, Si, O, OH

Phyllosilicate

pearly to greasy

Question 3

Garnierite

Answer 3

Al, Si, O, OH

Phyllosilicate

Pistachio green to brown

Question 4

Kaolinite

Answer 4

Al, Si, O, OH

Phyllosilicate

Looks like chalk
Dull
Triclinic

Question 5

Illite

Answer 5

K, Al, Mg, Fe, Si, O, OH - low K

Phyllosilicate

Graphite gray - shale

Question 6

Glauconite

Answer 6

K, Na, Fe, Al, Mg, Si, O, OH

Phyllosilicate

rust brown
Luster - dull/earthy

Question 7

Pyrophyllite

Answer 7

Al, Si, O, OH

Phyllosilicate

Dark olive green with black grains - may have white
Quite granular

Question 8

Muscovite

Answer 8

K, Al, Si, O, OH

Phyllosilicate

Transparent
1 cleavage
Vitreous to pearly
Monoclinic
Platy/micaceous/lamellar

Question 8

Phlogopite

Answer 8

K, Mg, Al, Si, O, OH

Phyllosilicate

Translucent
Reddish brown
Vitreous to pearly
1 cleavage
Monoclinic

Question 9

Biotite

Answer 9

K, Mg, Fe, Al, Si, O, OH

Phyllosilicate

Opaque
Black
vitreous to pearly
monoclinic
1 cleavage

Question 10

Lepidolite

Answer 10

K, Li, Al, Si, O, OH, F

Phyllosilicate

Purple, pink
Li rich mica
Vitreous to pearly

Question 11

Chlorite

Answer 11

Mg, Fe, Al, Si, O, OH

Phyllosilicate

Very dark blackish-green
Not crystalline
Dull

Question 12

Prehnite

Answer 12

Ca, Al, Si, O, OH

Phyllosilicate

Lighter olive green to light brown rock
Blueish to green on crystals
Dull on rock, Vitreous on crystals

Question 13

Anthophyllite

Answer 13

Mg, Si, O, OH

Inosilicate

White with patches of green-black

Question 14

Tremolite (1 sample)

Answer 14

Ca, Mg, Si, O, OH

Inosilicate

Vitreous to pearly
White

Question 15

Actinolite (1 sample)

Answer 15

Ca, Mg, Fe, Si, O, OH

Inosilicate

Dark green with black crystals

Question 16

Hornblende

Answer 16

Ca, Na, Mg, Fe, Al, Si, O, OH

Inosilicates

Dark black - iron black to grey

Question 17

Riebeckite

Answer 17

Na, Fe, Si, O, OH

Inosilicate

White/cream has black(hornblende?)
Fine grain

Question 18

Cummingtonite

Answer 18

Mg, Si, O, OH

Inosilicate

Dark black to grey with brown on fracture
Fine grain

Question 19

Jade - amphibole

Answer 19

Ca, Mg, Fe, Si, O, OH

Inosilicate

Olive green (kind of gray) - lighter on fracture
Granular

Question 20

Glaucophane

Answer 20

Na, Mg, Al, Si, O, OH

Inosilicate

Grayish purple - brown on fracture

Question 21

Enstatite

Answer 21

Mg, Fe, Si, O

Inosilicate

Gray to dark olive to brown/black
Submetallic luster

Question 22

Diopside

Answer 22

Ca, Mg, Si, O

Inosilicate

Grey to white to small bits of brown
Granular massive, columnar

Question 23

Augite

Answer 23

Ca, Na, Mg, Fe, Al, Si, O

Inosilicate

Black to green to rusty brown

Question 24

Hedenbergite

Answer 24

Ca, Fe, Si, O Inosilicate Malachite green to grey black brown

Question 25

Jadeite - pyroxene

Answer 25

Na, Al, Si, O Inosilicate Very light grey green to brown

Question 26

Rhodonite

Answer 26

Mn, Si, O Inosilicate Pink

Question 27

Spodumene

Answer 27

Li, Al, Si, O Inosilicate White Prismatic crystals monoclinic Cloudy cream white crystal

Question 28

Wollastonite

Answer 28

Ca, Si, O Inosilicate Chalky white with green specs and brown spots

Question 29

Beryl

Answer 29

Be, Al, Si, O Cyclosilicates Light blue white with little brown Hexagonal crystal system Prismatic

Question 30

Cordierite

Answer 30

Mg, Fe, Al, Si, O, H2O Cyclosilicate darky grey to black to slightly green Orthorhombic Short prismatic

Question 31

Tourmaline

Answer 31

Na, Ca, Fe 2+, Fe 3+, Mg, Al, Mn, Li, B, Si, O, OH, F Cyclosilicates Red to brown to white to black to grey to white Striated Hexagonal Prismatic/columnar

Question 32

Epidote

Answer 32

Ca, Fe, Al, Si, O, OH Sorosilicate Army green with brownish red - some white Monoclinic Prismatic

Question 33

Hemimorphite

Answer 33

Zn, Si, O, OH, H2O Sorosilicate Deep brown to orange rocks with light blue crystal Orthorhombic

Question 34

Idocrase

Answer 34

Ca, Fe, Al, Mg, Si, O, OH, F Sorosilicate Large rock Reddish brown with gray Tetragonal Prismatic

Question 35

Olivine

Answer 35

Mg, Fe, Si, O Nesosilicate Olive color Orthorhombic Granular/massive

Question 36

Andalusite (1 sample)

Answer 36

Al, Si, O Nesosilicate Purple red with dark parts Prismatic/columnar Orthorhombic

Question 37

Sillimanite

Answer 37

Al, Si, O Nesosilicate White to light grey with reddish brown specs Orthorhombic Slender prismatic/ fine fibrous "fibrolite"

Question 38

Kyanite

Answer 38

Al, Si, O Nesosilicate Blue grey with rust brown to white Triclinic Long tabular crystals

Question 39

Staurolite

Answer 39

Fe, Al, Si, O, H2-4 Nesosilicate crystals - brown - Prismatic cruciform twins crossing either at 90 or 60 Rock - grey - granular Monoclinic

Question 40

Topaz (1 sample)

Answer 40

Al, Si, O, F, OH Nesosilicates Blue gray green to white on fractures Orthorhombic

Question 41

Almandine

Answer 41

Al, Fe, Si, O Nesosilicate Rust brown to black Isometric Dodecahedron/Trapezohedron

Question 42

Andradite

Answer 42

Ca, Fe 3+, Si, O Nesosilicate Red to brown with some white Isometric Granular

Question 43

Willemite

Answer 43

Zn, Si, O Nesosilicates Black rock with rusty brown spots and light khaki High spec grev Granular or massive Hexagonal

Question 44

Zircon

Answer 44

Zr, Si, O Nesosilicate Dirty white with iron black and spots of brown Tetragonal Irregular grains (some prismatic)

Question 45

Titanite

Answer 45

Ca, Ti, Si, O Nesosilicate Gray white with pinkish brown streaks and black going through it Massive Monoclinic