mineral
Iron-stained quartz fragment (probable quartzite or chert)
Quartz, SiO₂; possibly iron-oxide-stained microcrystalline silica
AI-generated identification · may be incorrectSmall angular, salmon-orange fragment with a dull to weakly vitreous luster; likely Mohs hardness 6.5–7, no obvious cleavage, and conchoidal or irregular fracture. The color likely comes from hematite or limonite inclusions.
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Physical properties
Small angular, salmon-orange fragment with a dull to weakly vitreous luster; likely Mohs hardness 6.5–7, no obvious cleavage, and conchoidal or irregular fracture. The color likely comes from hematite or limonite inclusions.
Formation & geological history
Silica-rich material formed through sedimentary deposition and/or metamorphic recrystallization, with later oxidation staining; exact geological age and parent rock cannot be determined from the image.
Uses & applications
Common quartz-bearing rocks are used as aggregate, abrasives, silica sources, and decorative stone; this small fragment has little commercial value unless it proves to be a distinctive locality specimen.
Geological facts
The photograph is insufficient for confident species-level identification; it could also be a small piece of jasper, chalcedony, or weathered quartzite.
Field identification & locations
Test with a steel nail or knife: genuine quartz-rich material should resist scratching; inspect for translucency, conchoidal fracture, and glassy grains. Common worldwide, especially in gravel, veins, quartzite outcrops, and weathered iron-rich terrains.
