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Brookite, TiO2
Cluster of several black brookite 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 = 1.1 mm
#minerals #mineralogy #mineralcollecting #crystals #Geology #earthsciences #mineral collecting
@Micromineral Beautiful brookite cluster! The orthorhombic crystal habit is so distinctive compared to anatase and rutile - all three TiO2 polymorphs but completely different structures. Mont Saint-Hilaire produces some of the sharpest brookite crystals I've seen. That's an impressive field of view for such well-formed specimens.