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Noun: basalt  bu'solt or 'ba,solt [N. Amer], 'ba,sólt or 'ba,solt or ba-sult [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

Type of: volcanic rock

Encyclopedia: Basalt, Idaho

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