Pyroxenite
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Pyroxenite is an ultramafic igneous rock consisting essentially of minerals of the pyroxene group, such as augite, diopside, hypersthene, bronzite or enstatite. Pyroxenes have the general formula XY2O
Pyroxenite from Rustenburg, South Africa
Metamorphosed (serpentinized) clinopyroxenite, made of green diopside, from the Shetland ophiolite, Unst, Scotland
Ultramafic rock
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Ultramafic rocks are igneous and meta-igneous rocks with a very low silica content, generally >18% MgO, high FeO, low potassium, and are usually composed of greater than 90% mafic minerals. Earth's ma
Peridotite, a type of ultramafic rock
Melilitite from Hohenstoffeln (Hegau)