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Welcome to the Orthoclase Mineral Gallery If you have more items you would like listed on this page please use the link below. ---

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Orthoclase feldspar is a potassium aluminum silicate, and is commonly called "potassium feldspar" or simply "K-spar," given that the chemical symbol for potassium is "K." Orthoclase crystals are usually opaque, may be translucent and rarely transparent.

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