mineral

Iron-stained quartz vein in host rock

Quartz (SiO₂), with iron-oxide staining; host rock is uncertain from the image

AI-generated identification · may be incorrect

The specimen shows a pale, opaque-to-translucent quartz-like vein with ochre staining and a rough, light-colored matrix. Quartz has Mohs hardness 7, a trigonal crystal structure, vitreous luster, and no cleavage; the visible specimen is not sufficiently clear to identify the matrix or measure its properties.

Identified September 23, 2026More mineral →

Explore Iron-stained quartz vein in host rock in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

Physical properties

Formation & geological history

Quartz veins commonly form when silica-rich fluids fill fractures and crystallize as rocks cool; iron oxides can stain the quartz yellow or orange. The specimen’s age and precise formation environment cannot be determined from the photograph.

Uses & applications

Quartz is used in glass, electronics, abrasives, and mineral collecting; attractive pieces may be displayed or cut, though this example appears rough and ordinary.

Geological facts

Yellow-orange coloration commonly comes from iron-oxide coatings or inclusions rather than from the quartz itself.

Field identification & locations

Look for a glassy to waxy appearance, hardness sufficient to scratch ordinary glass, and lack of cleavage; the image alone does not establish that this is quartz rather than another pale vein mineral. Quartz veins occur worldwide in many rock types.