Definition of creedite
: a mineral Ca3Al2F4(OH, F)6(SO4).2H2O consisting of hydrous calcium aluminum fluoride with calcium sulfate, occurring in white to colorless grains, and radiating crystalline masses (hardness 2, specific gravity 2.7)
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Origin and Etymology of creedite
Creede quadrangle (U.S. Geological Survey), southwest Colorado, its locality + English -ite
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