We found 1 definitions of oligoclases from 1 different sources.
Noun |
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oligoclase - any of a series of triclinic feldspars that form rocks | ||
plagioclase | ||
feldspar, felspar any of a group of hard crystalline minerals that consist of aluminum silicates of potassium or sodium or calcium or barium | ||
basalt the commonest type of solidified lava; a dense dark grey fine-grained igneous rock that is composed chiefly of plagioclase feldspar and pyroxene | ||
dacite a grey volcanic rock containing plagioclase and quartz and other crystalline minerals | ||
albite, white feldspar a widely distributed feldspar that forms rocks |