Definitions of felspar
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any of a group of hard crystalline minerals that consist of aluminum silicates of potassium or sodium or calcium or barium
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synonyms:
feldspar
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types:
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orthoclase
a white or colored monoclinic feldspar
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oligoclase, plagioclase
any of a series of triclinic feldspars that form rocks
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moonstone
a transparent or translucent gemstone with a pearly luster; some specimens are orthoclase feldspar and others are plagioclase feldspar
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albite, white feldspar
a widely distributed feldspar that forms rocks
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anorthite
rare plagioclastic feldspar occurring in many igneous rocks
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type of:
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spar
any of various nonmetallic minerals (calcite or feldspar) that are light in color and transparent or translucent and cleavable
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