mineral
Yellow jasper (likely)
Microcrystalline quartz, SiO₂, colored by iron oxides; exact identification is uncertain from the photo
AI-generated identification · may be incorrectOpaque golden-yellow to ochre, with a matte-to-waxy surface and irregular fracture; quartz hardness is about 7 Mohs, but this small piece may be a chip or cut fragment. Crystal structure is trigonal, though crystals are too fine to see.
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Physical properties
Opaque golden-yellow to ochre, with a matte-to-waxy surface and irregular fracture; quartz hardness is about 7 Mohs, but this small piece may be a chip or cut fragment. Crystal structure is trigonal, though crystals are too fine to see.
Formation & geological history
Jasper forms when silica-rich fluids fill or replace rock, with iron oxides providing color; deposits occur in many geological ages and settings.
Uses & applications
Used for beads, cabochons, carvings, and ornamental objects; small rough fragments are commonly collected.
Geological facts
“Jasper” describes opaque, impure microcrystalline quartz rather than one specific mineral species.
Field identification & locations
A yellow, opaque appearance is consistent with jasper, but the image alone cannot distinguish it reliably from other iron-stained silica rocks. Jasper is found worldwide, including in sedimentary and volcanic terrains.
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