Ask your own question, for FREE!
Biology 17 Online
OpenStudy (anonymous):

Igneous rocks that contain many dark silicate minerals, and that also are rich in magnesium and iron, have a composition that is

OpenStudy (bioepic):

The only answer online was biotite. Does that make sense? Probably not. I'm a biochem/synbio person. @PRAETORIAN.10 might be able to help.

OpenStudy (praetorian.10):

biotite is correct to a degree check this biz: http://quizlet.com/10028827/igneous-rocks-flash-cards/

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!