Basanite

Basanite (/ˈbæs.əˌnt/) is an igneous, volcanic (extrusive) rock with aphanitic to porphyritic texture. It is composed mostly of feldspathoids, pyroxenes, olivine, and plagioclase and forms from magma low in silica and enriched in alkali metal oxides that solidifies rapidly close to the Earth's surface.

Basanite
Igneous rock
Volcanic bomb of black basanite enclosing a xenolith of green dunite from Réunion
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