Basalt is which type of rock?

Basalt Rock is a dark colour extrusive igneous rock formed from the rapid cooling of magnesium-rich and iron-rich lava, composed mainly of plagioclase and pyroxene minerals.

Black Basalt Rock usually forms as an extrusive rock, such as a lava flow, but also found in small intrusive bodies, such as an igneous dike or a thin sill. The composition of basalt is similar to gabbros.

Basalt Volcanic Rock is more than the Ninety percent of all volcanic rock on Earth. Due to low viscosity and low silica content in basalt rock, it results in rapid lava flows that can spread over huge areas. Black Basalt is a very important rock.