glaucophane

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English[edit]

Glaucophane
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Noun[edit]

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.

External links[edit]

  • Glaucophane” in David Barthelmy, Webmineral Mineralogy Database[1], 1997–.
  • glaucophane mindat.org[2], Hudson Institute of Mineralogy, accessed 29 August 2016