mineral

Quartz-rich rock, possibly iron-stained quartz or quartzite

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

AI-generated identification · may be incorrect

Small irregular fragment with pale cream to honey-brown color, translucent edges, and a dull-to-glassy luster; quartz hardness is Mohs 7, with no cleavage and conchoidal fracture. Exact texture and density are difficult to determine from the photograph.

Identified September 3, 2026More mineral →

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Physical properties

Formation & geological history

Quartz crystallizes from silica-rich fluids or magma; quartzite forms when quartz sandstone is metamorphosed. Iron oxides commonly produce the orange-brown staining; ages vary widely by locality.

Uses & applications

Common quartz is used in glass, ceramics, abrasives, electronics, and engineered stone; attractive pieces may be collected or used as lapidary material, though this specimen appears mainly educational/collector-grade.

Geological facts

Quartz is one of Earth’s most abundant minerals and is often identifiable because it can scratch ordinary steel or glass. The brown coloration is likely limonite or hematite coating/fracture staining.

Field identification & locations

Look for a glassy fracture, lack of cleavage, strong hardness, and white streak; a steel nail should not scratch it. Common worldwide in veins, igneous rocks, and metamorphic terrains.