mineral

Iron-stained quartz or quartzite fragment

Likely quartz (SiO₂), possibly iron-oxide-stained quartzite; exact identification is uncertain from the image

AI-generated identification · may be incorrect

Small, rough, angular orange-yellow fragment with a pale, possibly translucent quartz-rich interior and rusty iron-oxide staining. Quartz has Mohs hardness 7, vitreous luster, and no cleavage; quartzite is a hard, interlocking-grain metamorphic rock.

Identified October 13, 2026More mineral →

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Physical properties

Formation & geological history

Quartz forms in many geological settings, including veins and sedimentary deposits; quartzite forms when quartz sandstone is metamorphosed. Iron oxides can stain either material during weathering; age cannot be determined from the image.

Uses & applications

Quartz is used in glass, electronics, and jewelry; quartzite is used as building and landscaping stone. This fragment appears to have little commercial value.

Geological facts

Orange coloration commonly comes from hematite or goethite coatings or inclusions rather than from the quartz itself.

Field identification & locations

The rusty color and quartz-like pale areas suggest iron-stained quartz, but a close inspection or hardness test would help distinguish it from quartzite or another rock. Quartz-rich material is widespread worldwide.