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Mineral
Identification by Picture and Attribute
Explorers! Before you begin your journey, you need to recognize these geological specimens. |
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Begin by selecting one of the specimens pictured. |
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Inosilicates, Neosilicates, Sorosilicates |
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Oxides, Hydroxides, Carbonates |
Silicates |
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Name: Chalcedony |
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Class: SILICATES Group: Tektosilicates |
Color
Gray |
Chemical Formula: Si O2 |
Streak
White |
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Luster
dull, waxy |
Hardness
7 |
Cleavage
none |
Density
2.6 |
Crystal Form
Trigonal/Hexagonal/Micro
crystalline |
Common Uses / Other Facts: Crystals can only be seem under a microscope |
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Sulfides and Sulfates |
Halides |
Organic |
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