mineral

Quartz-rich rock, likely milky quartz or quartzite

Quartz (SiO₂), possibly quartzite with iron-oxide staining

AI-generated identification · may be incorrect

White to translucent gray, vitreous-to-sugary luster, massive granular texture, and no obvious cleavage; quartz hardness is Mohs 7, with specific gravity about 2.65.

Identified August 17, 2026More mineral →

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Physical properties

White to translucent gray, vitreous-to-sugary luster, massive granular texture, and no obvious cleavage; quartz hardness is Mohs 7, with specific gravity about 2.65.

Formation & geological history

Quartz crystallizes from silica-rich fluids or igneous melts; quartzite forms when sandstone is metamorphosed. The reddish-orange coloration likely comes from surface hematite or limonite weathering; age depends on its source formation.

Uses & applications

Common quartz is used in glass, ceramics, abrasives, and electronics; attractive pieces are collected or used as lapidary material, though this specimen appears modestly ornamental.

Geological facts

Quartz commonly breaks with curved, conchoidal fractures rather than cleavage. A steel nail should not scratch it, while quartz can scratch ordinary glass.

Field identification & locations

Likely identification: a quartz-rich fragment with iron staining, but the image cannot distinguish vein quartz from quartzite confidently. Common worldwide, especially in hydrothermal veins and metamorphic terrains; test hardness and inspect for sand-grain layering.