Definition of glaucophane in English:

glaucophane

noun

  • [mass noun] A bluish sodium-containing mineral of the amphibole group, found chiefly in schists and other metamorphic rocks.

    • ‘Some melange inclusions locally preserve glaucophane overprinted by actinolite.’
    • ‘The mineral glaucophane, for example, has a pleochroism scheme of colourless, lavender, and sky blue.’
    • ‘Undated glaucophane schists in the suture zone in Transbaikalia confirm the operation of subduction processes.’

Origin

Mid 19th century: from German Glaukophan, from Greek glaukos bluish-green + -phanēs shining.

Pronunciation:

glaucophane

/ˈɡlɔːkəfeɪn/