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A coarse-grained crystalline rock composed mostly (>90%) of mafic minerals

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Classification of Coarse-grained-ultramafic-rockHide

Modal classification of ultramafic rocks (after Streckeisen, 1973)

Modal classification of ultramafic rocks (after Streckeisen, 1973)

Sub-divisions of Coarse-grained-ultramafic-rockHide

Mineralogy of Coarse-grained-ultramafic-rockHide

Essential minerals - these are minerals that are required within the classification of this rock:
MaficsA petrological term for dark, rock-forming minerals rich in magnesium and/or iron.
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.
PyroxeneA petrological term for Pyroxene Group.

Synonyms of Coarse-grained-ultramafic-rockHide

Internet Links for Coarse-grained-ultramafic-rockHide

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