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Coarse-grained-ultramafic-rock

A rock classification type
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About Coarse-grained-ultramafic-rockHide

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


Unique IdentifiersHide

Mindat ID:
50598
Long-form identifier:
mindat:1:1:50598:1
GUID
(UUID V4):
66830bb4-1799-4f4b-88db-d841e6803827

Classification of Coarse-grained-ultramafic-rockHide

TRI__45d62b89f1bfbd3bd8fb5e59c28ae239.png

Modal classification of ultramafic rocks (after Streckeisen, 1973)

TRI__a85a3952c86a41ec3c142287771f1356.png

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:
Mafic mineralsA 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 > HornblendeA commonly used informal name for dark green to black amphiboles, largely in the Hornblende Root Name ...
OlivineCommonly used as a synonym for a member of the Fayalite-Forsterite Series, but more generally and properly ...
PyroxeneA petrological term for Pyroxene Group.

Synonyms of Coarse-grained-ultramafic-rockHide

Internet Links for Coarse-grained-ultramafic-rockHide

References for Coarse-grained-ultramafic-rockHide

Reference List:
 
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