mineral

Quartz-rich rock, possibly milky quartz

Quartz (silicon dioxide, SiO₂), possibly with feldspar or mica inclusions

AI-generated identification · may be incorrect

Hardness about 7 Mohs; pale gray to translucent white with vitreous luster, irregular fracture, and no obvious cleavage. The rough, granular appearance suggests quartz-bearing material rather than a cut gemstone.

Identified August 14, 2026More mineral →

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Physical properties

Formation & geological history

Likely formed in a hydrothermal vein or as part of a quartz-rich igneous/metamorphic rock; its exact geological age and setting cannot be determined from the photograph. Quartz veins occur in many regions and geological ages.

Uses & applications

Quartz is used in glass, electronics, abrasives, ceramics, and construction aggregate; attractive pieces are sold as mineral specimens. This specimen appears common and has limited commercial value.

Geological facts

Quartz is one of Earth’s most abundant minerals and forms distinctive six-sided crystals when space permits. The visible yellowish areas may be iron staining or included feldspar rather than gold.

Field identification & locations

Look for glassy luster, hardness sufficient to scratch ordinary glass, and absence of cleavage; a steel nail should not scratch it easily. Common sources include quartz veins, granite, pegmatite, and metamorphic rocks.