mineral

Iron-stained quartz vein material

Quartz (SiO₂), with iron-oxide staining and possible inclusions

AI-generated identification · may be incorrect

Mostly translucent to opaque white and honey-brown, with vitreous luster and irregular fracture; quartz hardness is 7 Mohs, with no cleavage and a trigonal crystal structure. The rusty colors are likely iron oxides such as goethite or limonite; the photo does not establish exact impurities.

Identified October 10, 2026More mineral →

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Physical properties

Formation & geological history

Likely quartz precipitated from silica-rich hydrothermal fluids in a crack, later colored by iron-bearing fluids or weathering. Such veins form in many geological settings and may range widely in age.

Uses & applications

Quartz is widely used in glass, electronics, abrasives, and decorative stone; this rough, iron-stained piece is mainly a collector specimen.

Geological facts

Iron oxides commonly produce yellow, orange, and brown staining on otherwise colorless or milky quartz.

Field identification & locations

Look for glassy luster, hardness sufficient to scratch glass, and lack of cleavage; quartz veins occur worldwide. The specimen’s exact locality and any associated minerals cannot be determined from the image.