
Mixed collection of quartz-rich rocks and minerals
Quartz (SiO₂), with some pieces possibly containing feldspar or mica; exact identification is uncertain from the image
AI-generated identification · may be incorrectMostly opaque to translucent white, gray, and pale pink rough fragments with vitreous to dull luster. Quartz has Mohs hardness 7, hexagonal crystal structure, and no cleavage; the pictured pieces are too indistinct to assess individual properties reliably.
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