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Biotite vs Diorite - What's the difference?

biotite | diorite |

As nouns the difference between biotite and diorite

is that biotite is a dark brown mica; it is a mixed aluminosilicate and fluoride of potassium, magnesium and iron while diorite is a grey intrusive igneous rock composed mostly of plagioclase feldspar, biotite, hornblende and/or pyroxene.

biotite

English

(wikipedia biotite)

Noun

(-)
  • (mineral) A dark brown mica; it is a mixed aluminosilicate and fluoride of potassium, magnesium and iron.

    • diorite

    English

    (wikipedia diorite)

    Noun

    (en noun)
  • (rock) A grey intrusive igneous rock composed mostly of plagioclase feldspar, biotite, hornblende and/or pyroxene.

    • Derived terms

    * dioritic * granodiorite * microdiorite