mineral

Likely rough quartz with iron-oxide staining

Quartz (SiO₂), possibly with iron-oxide inclusions or surface staining

AI-generated identification · may be incorrect

Translucent to cloudy white-blue with brown and rusty patches; vitreous luster, no obvious cleavage, Mohs hardness 7, hexagonal crystal structure. Identification is tentative from the photo.

Identified September 29, 2026More mineral →

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Physical properties

Translucent to cloudy white-blue with brown and rusty patches; vitreous luster, no obvious cleavage, Mohs hardness 7, hexagonal crystal structure. Identification is tentative from the photo.

Formation & geological history

Quartz commonly crystallizes from silica-rich fluids in fractures and cavities, across many geological ages; iron oxides can stain or coat it during weathering.

Uses & applications

Quartz is used in glass, electronics, abrasives, and jewelry; this small, irregular piece is mainly suitable for a collection.

Geological facts

Quartz is one of Earth’s most abundant minerals and can occur in many colors due to impurities and inclusions.

Field identification & locations

Look for glassy luster, hardness sufficient to scratch ordinary glass, and fracture rather than cleavage. Quartz is widespread in igneous, metamorphic, and sedimentary settings worldwide.