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Noun: basalt  bu'solt [N. Amer], ba-sólt or ba-solt [Brit]
  1. The commonest type of solidified lava; a dense dark grey fine-grained igneous rock that is composed chiefly of plagioclase feldspar and pyroxene

Derived forms: basalts

See also: basaltic

Type of: volcanic rock

Encyclopedia: Basalt, Colorado Basalt, CO Basalt Basalt, Idaho Basalt, Id Basalt, ID