Which rock primarily consists of Ca-plagioclase feldspar, pyroxene, and olivine?

The rock that primarily consists of Ca-plagioclase feldspar, pyroxene, and olivine is basalt. Basalt is an igneous rock that forms from the rapid cooling of lava at or near the Earth's surface. Its composition is typically rich in magnesium and iron, making it a mafic rock.

The presence of Ca-plagioclase feldspar indicates higher levels of calcium, which is characteristic of basaltic compositions. Pyroxene is another common mineral found in basalt, contributing to its dark coloration and overall mineral content. Olivine, though less abundant than the other two minerals, also commonly appears in basalt, particularly in certain varieties.

Granite and rhyolite are primarily composed of felsic minerals like quartz and alkali feldspar, which contrasts sharply with basalt’s mineralogy. Peridotite, while it does contain olivine, is an ultramafic rock primarily composed of olivine and pyroxene but lacks the significant presence of Ca-plagioclase feldspar that characterizes basalt.