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Minerals are natural solids. Minerals are formed through geological processes, which create the minerals chemical composition. Minerals have a highly ordered and characteristic atomic structure which defines their specific physical properties. Minerals can come in many compositions, from pure elements, to simple salts, to silicates which are very diverse and complex in structure. A rock is a mixture of minerals and does not have a specific composition.
Topaz

Topaz

Sat 04 Jul 2009 04:22:32 PM EDT

Wulfenite

Wulfenite

Sat 04 Jul 2009 04:25:12 PM EDT

apophyllite
apophyllite-stone
barite
bismuth
colemanite
emerald
fishtail-gypsum
fluorescent-minerals
fluorite
fluorite-crystals
galena
giant-crystals
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