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20 Cards in this Set

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Galena

Chemical Formula and Economic Use
PbS
lead ore
Magnetite

Chemical Formula and Economic Use
Fe304
iron ore
Pyrite

Chemical Formula and Economic Use
FeS2
sulfuric acid
Hematite

Chemical Formula and Economic Use
Fe2O3
iron ore
Sphalerite

Chemical Formula and Economic Use
ZnS
zinc ore
Galena

Streak Color
gray
Magnetite

Streak Color
black
Pyrite

Streak Color
black
Hematite

Streak Color
reddish brown
Sphalerite

Streak Color
yellow
Galena

G and H
G=7.6 (heavy)
H=2.5
Magnetite

G and H
G=5.2
H=6
Pyrite

G and H
G=5
H=6-6.5
Hematite

G and H
G=5
H=1-6
Sphalerite

G and H
G=4
H=3.5
Galena

Qualities
perfect cubic cleavage
silver gray color
Magnetite

Qualities
magnetic

black or dark gray color

usually occurs in granularmasses, single octahedra, or cubes
Pyrite

Qualities
brass yellow

no cleavage

often massive

sometimes in cubic crystals with striated faces (Fool's Gold)
Hematite

Qualities
steel gray, red gray to black

granular

lacks cleavage

may be dull in appearance
Sphalerite

Qualities
yellow to black

excellent cleavage, cleavage common

usually massive

streak gives off sulfur odor