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Ultramafic - What does it mean?

ultramafic | |

ultramafic

English

Adjective

(wikipedia ultramafic) (en adjective)
  • (geology) Describing igneous rocks that contain magnesium and iron and only a very small amount of silica, such as are found in the Earth’s mantle.
  • Synonyms

    * ultrabasic

    Noun

    (en noun)
  • A rock with such properties.
  • Not English

    has no English definition. It may be misspelled.