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32 Cards in this Set
- Front
- Back
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Sphalerite
Light or Dark |
Dark
|
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Hematite
Light or Dark |
Dark
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Flourite
Light or Dark |
Light
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Dolomite
Light or Dark |
Light
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Calcite
Light or Dark |
Light
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Halite
Light or Dark |
Light
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Gypsum
Light or Dark |
Light
|
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Sulfur
Light or Dark |
Light
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Sphalerite
Chemical Formula and Economic Use |
ZnS
zinc ore |
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Hematite
Chemical Formula and Economic Use |
Fe2O3
iron ore |
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Flourite
Chemical Formula and Economic Use |
CaF2
hydroflouric acid |
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Dolomite
Chemical Formula and Economic Use |
CaMg(CO3)2
cement |
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Calcite
Chemical Formula and Economic Use |
CaCO3
cement |
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Halite
Chemical Formula and Economic Use |
NaCl
table salt |
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Gypsum
Chemical Formula and Economic Use |
CaSO4-2H2O
plaster |
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Sulfur
Chemical Formula and Economic Use |
S
sulfuric acid |
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Sphalerite
G and H |
G=4
H=3.5 |
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Hematite
G and H |
G=not given
H=1.5 |
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Flourite
G and H |
G=3
H=4 |
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Dolomite
G and H |
G=2.9
H=3.5-4 |
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Calcite
G and H |
G=2.7
H=3 |
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Halite
G and H |
G=2
H=2-2.5 |
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Gypsum
G and H |
G=2.3
H=2 |
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Sulfur
G and H |
G=2.1
H=1.5-2.5 |
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Sphalerite
Qualities |
excellent cleavage
yellow streak resinous to metallic luster yellowish brown |
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Hematite
Qualities |
no cleavage
earthy appearance red streak |
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Flourite
Qualities |
good cleavage in 4 directions
variable color may occur as cubic crystals or octahedral cleavage fragments |
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Dolomite
Qualities |
may show rhombohedral cleavage in coarsely crystalline samples
will effervesce in HCl when powdered often in fine-grained masses |
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Calcite
Qualities |
good rhombohedral cleavage
effervesces in HCl color varies vitreous luster also in fine-grained masses such as limestone |
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Halite
Qualities |
perfect cubic cleavage
colorless to white soluble in water salty taste |
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Gypsum
Qualities |
perfect cleavage in one direction
white occurs as different varieties: Selenite is colorless and transparent, Satin Spar has a fibrous silky luster, Alabaster is pink to white and dull |
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Sulfur
Qualities |
yellow color
resinous luster burns a blue flame distinctive color |
