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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 | beryl | 7.50 | poor | conchoidal | Transparent | none | 2.65 | glassy | grey | white | prismatic | silicates | Color variable from white, yellowish white, pale blue-green or green. Imperfect basal cleavage. If bright blue--aquamarine and if bright green--emerald. prism faces finely striated. |
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