Question

Name three important minerals that occur only in igneous rocks

Answer 1

These silicate minerals include feldspars (plagioclase feldspar, potassium feldspar), quartz, micas (muscovite, biotite), pyroxenes (augite), amphiboles (hornblende), and olivine. Theseminerals make up over 95% of thevolume of the common igneous rocks, making igneous rocks easy to identify

Answer 2

olivine

pyroxene

amphibole