________ is the dominant feldspar in basalt.
A)Plagioclase
B)Microcline
C)Orthoclase
D)Pyroxene

Question

Quizplus · Accepted Answer

Plagioclase is the dominant feldspar in basalt, comprising up to 50% or more of the rock's mineral content. This is because basalt is a type of volcanic rock that forms from the rapid solidification of lava, and plagioclase is a common mineral in the magma that forms this lava. Microcline and orthoclase are more commonly found in granitic rocks, while pyroxene is a separate group of minerals that are typically found in igneous and metamorphic rocks alongside feldspars.

________ Is the Dominant Feldspar in Basalt