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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 | labradorite (feldspar group) | 6.00 | parallel | Uneven | Translucent | none | 2.62 | glassy | black | white | tabular | silicates | A dark crystal with iridescent reflection from twinned cleavage surfaces. A variety of Anorthite. |
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