The most common ferromagnesian silicate minerals by % in igneous rocks are __________.
A) aragonite, barite, calcite, and diamond
B) olivine, pyroxene, amphibole, and biotite
C) magnetite, chromite, hematite, and ilmenite
D) feldspar, quartz, and muscovite

Question

Quizplus · Accepted Answer

Olivine, pyroxene, amphibole, and biotite are common ferromagnesian (rich in iron and magnesium) silicate minerals found in igneous rocks, unlike the minerals listed in the other options which either do not contain iron and magnesium or are not silicates.

The Most Common Ferromagnesian Silicate Minerals by % in Igneous