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felspar

DEFINITIONS OF: felspar

1

n any of a group of hard crystalline minerals that consist of aluminum silicates of potassium or sodium or calcium or barium

Synonyms:
feldspar
Types:
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orthoclase
a white or colored monoclinic feldspar
oligoclase, plagioclase
any of a series of triclinic feldspars that form rocks
moonstone
a transparent or translucent gemstone with a pearly luster; some specimens are orthoclase feldspar and others are plagioclase feldspar
albite, white feldspar
a widely distributed feldspar that forms rocks
anorthite
rare plagioclastic feldspar occurring in many igneous rocks
Type of:
spar
any of various nonmetallic minerals (calcite or feldspar) that are light in color and transparent or translucent and cleavable
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