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oligoclase

DEFINITIONS OF: oligoclase

1

n any of a series of triclinic feldspars that form rocks

Synonyms:
plagioclase
Types:
albite, white feldspar
a widely distributed feldspar that forms rocks
anorthite
rare plagioclastic feldspar occurring in many igneous rocks
Type of:
feldspar, felspar
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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