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Pyroxene vs Biotite - What's the difference?

pyroxene | biotite |

As nouns the difference between pyroxene and biotite

is that pyroxene is pyroxene while biotite is (mineral) a dark brown mica; it is a mixed aluminosilicate and fluoride of potassium, magnesium and iron.

pyroxene

English

(wikipedia pyroxene)

Noun

(en noun)
  • (mineralogy) Any of a group of crystalline minerals containing silicates of iron, magnesium and calcium.
  • * 2004 , (Richard Fortey), The Earth , Folio Society 2011, p. 10:
    • By the pathside, there are occasional large boulders that shown black crystals the size of a fingernail; these are pyroxene minerals that had time to crystallise out deep within the chamber of liquid rock – or magma – beneath the volcano.

    biotite

    English

    (wikipedia biotite)

    Noun

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