mineral

Iron-stained quartz-bearing rock

Quartz (SiO₂), likely with limonite/goethite iron oxides and possibly feldspar

AI-generated identification · may be incorrect

Hardness about 7 for quartz; white to translucent with yellow-brown and reddish staining, vitreous to dull luster, and irregular fracture. The blurry image does not allow reliable identification of crystal habit or cleavage.

Identified September 20, 2026More mineral →

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Physical properties

Formation & geological history

Likely a hydrothermal quartz vein fragment or weathered quartz-rich host rock, with iron-bearing fluids producing the ochre staining. Its geological age cannot be determined from the photograph; such material forms in many rock bodies worldwide.

Uses & applications

Common specimens have little commercial value; quartz is important in glass, ceramics, electronics, and construction aggregate. Attractive translucent pieces may be collected or used decoratively.

Geological facts

Yellow-brown coloration commonly comes from limonite or goethite coatings rather than the quartz itself. A glass-scratch test can help confirm quartz, though it may damage the specimen.

Field identification & locations

Look for glassy translucence, very hard edges, and no obvious cleavage; quartz will scratch ordinary glass and is not scratched by a steel knife. Common sources include hydrothermal veins and weathered mineralized zones.