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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 | vermiculite | 2.00 | basal | Uneven | Translucent | none | 2.40 | glassy | brown | yellow | tabular | silicates | Can have submetallic to metallic luster with a golden color. Hydrothermal alteration of biotite and/or phlogopite. |
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