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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 | realgar | 1.50 | perfect | conchoidal | Translucent | none | 3.50 | glassy | red | orange | prismatic | sulfides | Slowly degrades to powder when exposed to light and air. Composition is arsenic and sulfur. |
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