mineral

Iron-stained quartz

Quartz (SiO₂), with iron-oxide staining; exact variety uncertain

AI-generated identification · may be incorrect

Hardness 7 Mohs; translucent white to honey-brown, vitreous luster, hexagonal crystal structure, and no true cleavage; irregular fracture. The brown-orange color is consistent with iron-oxide coatings or inclusions.

Identified October 10, 2026More mineral →

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Physical properties

Formation & geological history

Quartz commonly crystallizes from silica-rich hydrothermal fluids or grows in pegmatites and veins; iron staining may form later during weathering. Its age depends on the host deposit and cannot be determined from the image.

Uses & applications

Quartz is used in glass, electronics, abrasives, and ornamentation; attractive material may be collected or cut, though this specimen appears more suitable for a collection than jewelry.

Geological facts

Quartz is one of Earth’s most abundant minerals and often develops color from trace elements or inclusions rather than from pure silica itself.

Field identification & locations

Look for glassy luster, hardness sufficient to scratch glass, and lack of cleavage; iron-stained quartz is widespread in veins and weathered rocks worldwide. The image alone does not establish a precise quartz variety.