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Geology: Rocks, Minerals, Crystals & Ores Metallic Oxides
Mines in the Mojave Desert have produced economically important ore for centuries. Metallic ores of iron (pyrite), lead (galena), zinc (sphalerite), and copper (chalcopyrite) were deposited in veins by hot water. When these veins were oxidized by cold water, colorful sulphates, (SO4), carbonates (CO3), arsenates (AsO4), vanadates (VO4), and molybdates (MoO4) formed. These metallic oxides are valued by miners as ore and by collectors as specimens.
Sphalerite Wulfenite Caledonite Malachite Dioptase Agate over wulfenite Conichalcite Azurite Mimetite Brochantite Linarite Embolite Pyrite Chalcopyrite, sphalerite Galena Turquoise Vanadinite Aurichalcite Turquoise Malachite aft. azurite Turquoise aft. apatite Linarite, caledonite Rosasite Turquoise Smithsonite >> Rocks, Minerals, Crystals & Ores |
Metal oxides are crystalline solids that contain a metal cation and an oxide anion. They typically react with water to form bases or with acids to form salts. Encyclopedia Britannica |
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