Which of the following best characterizes ferromagnesian silicates?
A)They are mostly clear, colorless, and rich in the elements magnesium and ferrium.
B)They contain iron and magnetite, are black in color, and they have metallic lusters.
C)They contain magnetite and ferroite, and they are clear to light green.
D)They are black to dark- green silicate minerals containing iron and magnesium.

Question

Quizplus · Accepted Answer

Ferromagnesian silicates are silicate minerals that contain large amounts of iron and magnesium, giving them dark colors ranging from black to dark green. Examples include olivine, pyroxene, and amphibole.

Which of the Following Best Characterizes Ferromagnesian Silicates