Mineral Characteristics

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Calcite
Looks glassy, has smooth surface,can bescratched by steel, powder bubbles in vinegar
Copper Sulfide
Has a metallic brassy,gray,or bluish shine, can be scratched by steel
Pyrite
Has a shiny brassy color, cannot be scratched by steel
Feldspar
Usually white or pink, has a pearly shine, breaks into flat pieces
Quartz
Looks glassy, is very hard, cannot be scratched by steel
Galena
Is heavy, has a bright, silvery-gray, metallic shine, is a soft mineral, can be scratched by steel
Sulfur
In pure form, is usually light yellow, crystals are almost transparent; other pieces glisten and look greasy, can be scratched with a fingernail, has an idenifiable, pungent odor
Halite
Usually transparent and colorless, feels sticky, can stand up on any side, dissolves easily in water
Talc
Usually apple-green, white, or gray, has a pearly shine, feels greasy, is fine-grained, is so soft it can be scratched with a fingernail
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