Common Minerals in Igneous Rocks

The mineral samples in this section are generally pure mineral specimens. Such pure mineral samples are not commonly found in the wild, but they still illustrate the basic properties displayed by their smaller counterparts in igneous, sedimentary, and metamorphic rocks.

Potassium feldspar
Quartz
Plagioclase feldspar

(same page as K-feldspar)

Hornblende

(an amphibole)

Muscovite

(a mica)

Biotite

(a mica; same page as muscovite)

Augite

(a pyroxene)

Olivine

Click here for a quick summary of the key features used to tell these eight minerals apart.

Go back to Common Minerals page


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