39 Pyroxenites 39 is the name given to ultramafic rocks comprising gt 60 pyroxene igneous rock which may contain biotite hornblende or olivine as accessories
Pyroxenite is an ultramafic igneous rock consisting essentially of minerals of the pyroxene The principal accessory minerals in addition to olivine and feldspar are chromite and other spinels garnet magnetite rutile and scapolite
A pyroxenite is a basic igneous rock dominated by pyroxene with up to 40 olivine accessory phases can include plagioclase spinel garnet ilmenite
Pyroxenite Olivine pyroxenite Modal classification of ultramafic rocks after Streckeisen 1973 Modal classification of ultramafic rocks after Streckeisen 1973
Ultramafic means that more than 90 of the rock is composed of magnesium and iron rich minerals like pyroxenes amphiboles and olivine In pyroxenite the
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