bn:00404582n
Noun Concept
Categories: Metamorphic rocks, Ultramafic rocks
EN
ultramafic rock  ultra-mafic  ultrabasic  ultrabasic rock  ultrabasic rocks
EN
Ultramafic rocks are igneous and meta-igneous rocks with a very low silica content, generally >18% MgO, high FeO, low potassium, and are composed of usually greater than 90% mafic minerals. Wikipedia
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EN
Ultramafic rocks are igneous and meta-igneous rocks with a very low silica content, generally >18% MgO, high FeO, low potassium, and are composed of usually greater than 90% mafic minerals. Wikipedia
Igneous rock type Wikidata