plural -s
: a mineral Na2(Mg,Fe)3Al2Si8O22(OH)2 consisting of a blue, bluish black, or grayish silicate of sodium, aluminum, iron, and magnesium occurring in certain crystalline schists

Word History


German glaukophan, from glauk- glauc- + -phan -phane

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Dictionary Entries Near glaucophane

Cite this Entry

“Glaucophane.” Dictionary, Merriam-Webster, Accessed 19 Jun. 2024.

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