mineral
Iron-stained Quartz
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness 7 on Mohs scale, yellowish-brown to orange color due to iron oxide coating, vitreous luster, trigonal crystal system, conchoidal fracture.
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Physical properties
Hardness 7 on Mohs scale, yellowish-brown to orange color due to iron oxide coating, vitreous luster, trigonal crystal system, conchoidal fracture.
Formation & geological history
Forms in hydrothermal veins or pegmatites, often weathered with iron-rich groundwater staining the surface over millions of years.
Uses & applications
Used in ornamental displays, specimen collecting, and raw material for lapidary work.
Geological facts
The distinctive rust coloration comes from limonite or goethite staining adhering to micro-fractures in the quartz.
Field identification & locations
Identify by high hardness scratching glass, conchoidal fracture, and persistent iron staining; found globally in quartz veins.
