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MINERAL IDENTIFICATION PROJECT |
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Hard- ness |
Cleavage |
Fracture |
Trans- parency |
10% HCl Reaction |
SG |
Luster |
Color |
Streak |
Xtal Form |
Mineral Class |
Comments | glauberite | 2.50 | perfect | conchoidal | Transparent | none | 2.81 | waxy | white | white | tabular | sulfates | Color variable from clear to white, red or yellow. Alters to gypsum when exposed to air. |
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