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"Pyroxenites" is the name given to ultramafic rocks comprising >60% pyroxene. The term pyroxenite (s.s.) refers to a 'true' pyroxenite containing >90% pyroxene. A coarse-grained, holocrystalline igneous rock which may contain biotite, hornblende, or olivine as accessories.
Classification of PyroxeniteHide
Modal classification of ultramafic rocks (after Streckeisen, 1973)
Sub-divisions of PyroxeniteHide
Mineralogy of PyroxeniteHide
Essential minerals - these are minerals that are required within the classification of this rock:
Non-essential minerals - these minerals are common, sometimes major components, but are not always present: