lab practical 1 review

Halite

Muscovite Mica

Magnetite

Calcite

Potassium Feldspar

Gypsum

Pyrite

tourmaline

fluorite

hornblende

Galena

Corundum

quartz

olivine

Hematite

Kaolinite

Garnet

Plagioclase feldspar

Halite Formula

NaCl (sodium chloride)

Magnetite Formula

Fe3O4 (iron oxide)

Calcite Formula

CaCO3 (calcium carbonate)

Gypsum formula

CaSO4 • 2H20

Pyrite formula

FeS2

Fluorite formula

CaF2

Galena formula

PbS

Corrundum formula

Al2O3

Quartz formula

SiO2

Olivine formula

(Mg, Fe)2 SiO4

Hematite formula

Fe2O3

Calcite hardness

3 mohs

potassium feldspar hardness

6 mohs

gypsum hardness

2 mohs

fluorite hardness

4 mohs

corrundum hardness

9 mohs

quartz hardness

7 mohs

halite uses

food preservative

muscovite mica uses

cosmetics/makeup

magnetite uses

iron source in steel industry

calcite uses

concrete

potassium feldspar uses

ceramics

gypsum uses

plaster

pyrite uses

gunpowder

tourmaline uses

gemstone

hornblende uses

fire resistant cloth

galena uses

lead batteries

corrundum uses

gems (ruby, sapphire)

quartz uses

window glass

hematite uses

red pigment in paint

kaolinite uses

fine china

garnet uses

gemstones

plagioclase feldspar uses

ceramics

muscovite mica special properties

flexible thin sheets

magnetite special properties

magnetic

calcite special properties

double refraction and rhombohedron cleavage

potassium feldspar special properties

exsolution lamellae

tourmaline special properties

striations

galena special properties

high specific gravity

corrundum special properties

hexagonal prisms with flat ends

quartz special properties

hexagonal prisms with hexagonal termination + striations

hematite special properties

brick-red streak

plagioclase feldspar special properties

striations

difference between calcite and halite

calcite always leans (rhombohedron)

galena and halite cleavage angles

3 at 90 degrees

hornblende cleavage angles

56 and 124 degrees

conchoidal minerals

pyrite, quartz, and olivine