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Name: |
anhydrite |
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Class: |
Sulfosalts |
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Chemistry: |
CaSO4 calcium sulfate |
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Color(s): |
white, gray, gray-blue, reddish |
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Hardness: |
3 - 3.5 |
SpecGrav: |
2.98 - 3.00 |
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Fracture: |
uneven |
Cleavage: |
perfect |
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Crystal: |
Orthorhombic, Stocky or tabular prismatic crystals. |
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Envronment: |
sedimentary rocks and evaporative rocks. Sometimes metamorphosed from dehydrated gypsum. |
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Association: |
dolomite, gypsum, sylvite, calcite |
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Locals: |
| Arizona, Texas, N.J., USA | Brazil | China | Spain | Italy | Australia | |
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Misc: |
The name is derived from the Greek, ³anhydros² and means ³without water² |
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Photos |
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