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Ultramafic vs Felsic - What's the difference?

ultramafic | felsic |

As adjectives the difference between ultramafic and felsic

is that ultramafic is 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 while felsic is enriched in the lighter elements such as silicon, oxygen, aluminium, sodium, and potassium.

As nouns the difference between ultramafic and felsic

is that ultramafic is a rock with such properties while felsic is a rock with such properties.

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.

    • felsic

    English

    Adjective

    (en adjective)
  • (mineralogy) Enriched in the lighter elements such as silicon, oxygen, aluminium, sodium, and potassium.

    • Synonyms

    * acidic

    Antonyms

    * mafic

    Related terms

    * felsite

    Noun

    (en noun)
  • A rock with such properties.