The most common variety of volcanic rock, composed almost entirely of dark, fine-grained silicate minerals, chiefly plagioclase feldspar and pyroxene, and magnetite.
Basalt (pronounced /ˈbæsɒlt, bəˈsɔːlt/) is a common mafic extrusive volcanic rock. It is usually gray to black and fine-grained due to rapid cooling of lava at the surface ...
Basalt, Colorado is a quaint mountain community located at the confluence of two Gold medal trout streams, the Fryingpan and the Roaring Fork Rivers. We are a ... ...
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