Common Minerals


 
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Common Minerals
Their Uses and Special Properties

Muscovite Mica
Calcite
Quartz
 
Biotite Mica Muscovite Mica Calcite Quartz
insulation, electronics, filler in plasterboard, cement, paint
peels in thin sheets
insulation, electronics, filler in plasterboard, cement, paint
 peels in thin sheets
the matrix in cement (CaCO3), optical equipment double image (#3 on Moh’s scale of hardness) glass, crystal, radios, watches, computers, electronics, optical equipment, jewelry (onyx, agate, & amethyst) hexagonal crystals (#7 on Moh’s scale), common in igneous rocks
 
Sulfur
Graphite
Gypsum
Plagioclase Feldspar
 
Sulfur Graphite Gypsum Plagioclase Feldspar
matches, fireworks, medicine
(sulfa drugs), sulfuric acid,
vulcanization of rubber
yellow
color, flammable, smells acrid
pencil “lead”, dry lubricant,
batteries
(hardness of #2)
drywall, plaster of Paris
(#2 on Moh’s scale)
abrasives, filler in paint and
plastics
most common
minerals in igneous rocks
 
Orthoclase Feldspar
Hematite
Halite
Galena
 
Orthoclase Feldspar Hematite Halite Galena
abrasives, filler in paint and
plastics
most common
minerals in igneous rocks
iron ore, cabochon jewelry
(when polished)
table salt, manufacture of
soap, paper, petroleum &
glass
tastes salty
lead ore for pipes, xray
shielding, fishing weights
very dense
 
Magnetite
Talc
Olivine
Pyrite
 
Magnetite Talc Olivine Pyrite
iron ore magnetic talcum powder, paints,
ceramics, paper coatings
softest mineral
(#1 on Moh’s scale)
source of peridotite for
jewelry
green color
sulfuric acid production
known as “fool’s gold”
 
Limonite
Barite
Dolomite
Bauxite
 
Limonite Barite Dolomite Bauxite
iron ore, yellow pigment for
paint
adds color to soil
barium ore for gastrointestinal
x-rays, white pigment for paint
lime for neutralizing acidic soil,
road aggregate, building stone
aluminum ore for soft drink
cans, softball bats, alloy
wheels, lawn furniture
 
Hornblende
Copper
Kaolinite
Chalcedony
 
Hornblende Copper Kaolinite Chalcedony
common mineral in
igneous rocks
coins, pipes, wire, cooking
utensils, jewelry
ductile,
malleable and conductive
ceramics, china, pottery,
filler in paper
arrowheads, driveway
gravel, ornamental stone,
cabochon jewelry
 
 

 
 
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