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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: Calcite |
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Class: CARBONATES |
Color
clear, white, yellow |
Chemical Formula: CaCO3 |
Streak
white |
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Luster
glassy |
Hardness
2.5 - 3 |
Cleavage
3 directions not at 90o |
Density
2.7 |
Crystal Form
Trigonal/Hexagonal |
Common Uses / Other Facts: Reacts with HCL! |
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Sulfides and Sulfates |
Halides |
Organic |
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