mineral
Iron-stained Quartz
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, vitreous luster, hexagonal crystal system, and no cleavage. Exhibits a yellowish-brown to orange coloration due to iron oxide surface staining.
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Physical properties
Hardness of 7 on the Mohs scale, vitreous luster, hexagonal crystal system, and no cleavage. Exhibits a yellowish-brown to orange coloration due to iron oxide surface staining.
Formation & geological history
Formed through hydrothermal processes where silica-rich fluids cooled in fractures, with subsequent iron staining occurring from weathering and groundwater exposure.
Uses & applications
Used in glassmaking, electronics, abrasive manufacturing, and as a popular specimen for mineral collectors.
Geological facts
Quartz is one of the most abundant minerals in Earth's continental crust. The iron staining is often referred to as 'hematite coating' or 'limestone stain'.
Field identification & locations
Easily identified by its high hardness (scratches glass) and conchoidal fracture. Found worldwide in nearly all geological environments.
