Astrophyllite, K2NaFe2+7Ti2(Si4O12)2O2(OH)4F

spray of thin light brown crystals.
Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry; Carrière Mont Saint-Hilaire), Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada
FOV = 2.0 mm
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