mineral
Iron-stained quartz
Quartz (SiO₂), likely colored by iron-oxide inclusions or surface staining
AI-generated identification · may be incorrectHardness 7 on the Mohs scale; white to rusty orange-brown, vitreous to dull luster, trigonal crystal structure, and no cleavage, with irregular fracture. The small, rough specimen’s identity is tentative from the image alone.
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Physical properties
Hardness 7 on the Mohs scale; white to rusty orange-brown, vitreous to dull luster, trigonal crystal structure, and no cleavage, with irregular fracture. The small, rough specimen’s identity is tentative from the image alone.
Formation & geological history
Quartz forms in igneous, metamorphic, and hydrothermal environments; iron oxides can stain it during later alteration. Quartz occurs across geological ages, so the specimen’s age cannot be determined visually.
Uses & applications
Quartz is widely used in glass, electronics, abrasives, and decorative objects; this rough piece appears suitable mainly for collecting.
Geological facts
Quartz is one of Earth’s most abundant minerals, and trace impurities or coatings can create many colors.
Field identification & locations
Look for hardness sufficient to scratch glass, lack of cleavage, and a glassy fracture; rusty coloration alone does not establish the iron-bearing mineral. Quartz is found worldwide.
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