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Browse Items (2 total)
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Anhydrite
Formula
CaSO4
Structure
Non-silicate
Crystal System
Crystal system: orthorhombic (+)
Physical Properties
Colour in hand specimen: white or colourless when pure Cleavage: two at 90° Hardness: 3-3.5
Optical Properties
Colour in plane…
Gypsum
Formula
CaSO4∙2H20
Structure
Non-silicate
Crystal System
Crystal system: monoclinic (+)
Physical Properties
Colour in hand specimen: usually white or colourlessCleavage: rhombohedral, one perfect, two distinctHardness: 2
Mineral…