mineral

Likely iron-stained quartz or quartz-rich rock fragment

Quartz (SiO₂), possibly colored by iron oxides such as goethite or hematite

AI-generated identification · may be incorrect

Small, rough fragment with orange-brown staining and pale, possibly translucent areas; quartz has Mohs hardness 7, vitreous luster, and no cleavage. The image is not detailed enough to confirm its mineral makeup or crystal structure.

Identified September 26, 2026More mineral →

Explore Likely iron-stained quartz or quartz-rich rock fragment 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 commonly forms in veins and silica-rich rocks as magma cools or mineral-bearing fluids deposit silica; iron staining can develop later through weathering. Its age and exact formation setting cannot be determined from the image.

Uses & applications

Quartz is used in glass, electronics, abrasives, and construction; attractive iron-stained pieces may be kept as inexpensive curios or specimens.

Geological facts

Orange-brown coloration often comes from iron oxides coating or permeating otherwise pale quartz, rather than from quartz itself.

Field identification & locations

A hardness or streak test can help distinguish quartz from softer lookalikes; inspect for glassy fracture and lack of cleavage. Quartz is widespread worldwide, but the specimen’s location is unknown.