A rare mineral or geological term, possibly referring to a crystal formation or mineral compound from Goyaz (Goiás) in Brazil.
Named after Goyaz (modern Goiás), a region in Brazil; mineral names often come from their geographical locations using the Latin suffix '-ite' for mineral classification.
Mineralogists name minerals after their locations so much that you can actually do geology backward—find a mineral ending in '-ite' and there's probably a place somewhere that shares its root name.
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