mineral
Red jasper (probable)
Jasper, an opaque microcrystalline variety of quartz; SiO₂, commonly colored by iron oxides
AI-generated identification · may be incorrectThe small, reddish-brown opaque fragment appears rough and fine-grained. Quartz hardness is about 7 Mohs, with a vitreous-to-dull luster and no visible cleavage; the photo is too soft to confirm identification or specific gravity.
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Physical properties
The small, reddish-brown opaque fragment appears rough and fine-grained. Quartz hardness is about 7 Mohs, with a vitreous-to-dull luster and no visible cleavage; the photo is too soft to confirm identification or specific gravity.
Formation & geological history
Jasper forms when silica-rich fluids or sediment become silica-cemented, with iron oxides providing red color. It occurs in deposits of many ages; the specimen’s age and exact origin cannot be determined from the image.
Uses & applications
Used for beads, cabochons, carvings, and decorative objects; larger pieces may be used ornamentally.
Geological facts
Jasper is not a single distinct mineral species but a variety of quartz/chalcedony, often patterned by impurities.
Field identification & locations
Look for opaque, dense material with red iron-oxide coloring and a hard, non-cleaving surface; confirm with a scratch test only if appropriate. Common sources include India, Brazil, Australia, and the western United States.
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