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Pyroxenite

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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.

Ref: CTD


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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:
PyroxeneA petrological term for Pyroxene Group.
Non-essential minerals - these minerals are common, sometimes major components, but are not always present:
Amphibole > HornblendeAn informal name for dark green to black amphiboles, mostly ferro-hornblende or ...
OlivineEquivalent to Fayalite-Forsterite Series; usually a more or less Fe-bearing forsterite.

References for PyroxeniteHide

Reference List:
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Le Maitre (ed.) (2002) Igneous Rocks - A Classification and Glossary of Terms. Cambridge Press

Internet Links for PyroxeniteHide

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