glaucophane

English

Glaucophane

Noun

glaucophane (plural glaucophanes)

  1. (mineralogy) A mixed aluminate of sodium, magnesium and aluminium that has a characteristic blue colour, and exhibits pleochroism, with the chemical formula Na2(Mg,Fe2+)3Al2Si8O22(OH)2.

Further reading

  • “Glaucophane” in David Barthelmy, Webmineral Mineralogy Database, 1997–.
  • glaucophane mindat.org‎, Hudson Institute of Mineralogy, accessed 29 August 2016
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