mineral

Unidentified translucent crystal/mineral fragment

Likely quartz (SiO₂), but visual identification is uncertain

AI-generated identification · may be incorrect

Colorless to milky white, vitreous luster, irregular broken or cleaved-looking surfaces, and apparent translucent crystal texture. Quartz has Mohs hardness 7, no true cleavage, hexagonal crystal symmetry, and specific gravity about 2.65; a tiny image cannot confirm these properties.

Identified September 17, 2026More mineral →

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Physical properties

Formation & geological history

If quartz, it formed from silica-rich hydrothermal fluids or cooling igneous rocks, commonly ranging from Precambrian to recent geological ages. The specimen appears loose and possibly mechanically broken or tumbled.

Uses & applications

Quartz is used in glass, ceramics, electronics, abrasives, countertops, and jewelry. This very small, unverified fragment has negligible commercial value.

Geological facts

The bright white appearance could also represent calcite, feldspar, or a man-made glass fragment; confirmation requires hardness, streak, cleavage, and ideally chemical or microscopic testing.

Field identification & locations

Test inconspicuously: quartz scratches ordinary steel and glass, leaves a white streak, and does not effervesce in dilute acid; calcite is softer and reacts strongly with acid. Common quartz localities include hydrothermal veins, granites, pegmatites, and sedimentary gravels.