mineral
Quartz with iron-oxide staining
Quartz (SiO₂) with likely hematite/goethite coating
AI-generated identification · may be incorrectWhite to translucent, glassy quartz with an orange-brown earthy patch; quartz hardness 7, trigonal crystal structure, no cleavage, and conchoidal fracture. The orange color is consistent with iron-oxide staining.
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Physical properties
White to translucent, glassy quartz with an orange-brown earthy patch; quartz hardness 7, trigonal crystal structure, no cleavage, and conchoidal fracture. The orange color is consistent with iron-oxide staining.
Formation & geological history
Quartz formed from silica-rich fluids or within a quartz vein; later iron-bearing fluids or weathering deposited the orange coating. The image does not reveal its geological age or precise formation setting.
Uses & applications
Quartz is widely used in glass, electronics, and decorative objects; this small specimen is mainly suitable for collecting.
Geological facts
Iron oxides commonly stain quartz orange, red, or brown without changing the quartz itself.
Field identification & locations
Look for hard, glassy material that scratches ordinary glass and lacks cleavage; the orange patch may rub or weather away. Quartz occurs worldwide in veins, pegmatites, and sedimentary deposits.
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