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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 | citrine (quartz group) | 7.00 | none | conchoidal | Transparent | none | 2.65 | glassy | yellow | white | prismatic | silicates | Color from yellow to brown. Many natural crystals but most commercial citrine is due to heat treating amethyst. |
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