mineral

Red jasper-bearing breccia (probable)

Microcrystalline quartz (SiO₂) with iron-oxide coloration, in a brecciated host

AI-generated identification · may be incorrect

The specimen appears to contain a brick-red, opaque, fine-grained jasper-like material attached to a pale, porous matrix. Jasper is quartz-rich, Mohs hardness about 6.5–7, with a dull to waxy luster and no visible cleavage; the pale matrix may be calcite, quartz, or weathered rock.

Identified August 8, 2026More mineral →

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Physical properties

Formation & geological history

Iron-rich silica formed when chalcedony or quartz was stained by hematite, commonly filling fractures or cementing breccia fragments. Its exact geological age and host rock cannot be determined from the photograph.

Uses & applications

Used as a lapidary stone for cabochons, beads, carvings, and decorative specimens; the pictured rough piece has limited commercial value.

Geological facts

Red coloration generally comes from hematite or other iron oxides rather than the quartz itself. The contrasting pale matrix suggests brecciation or vein formation.

Field identification & locations

Common in hydrothermal veins, volcanic terrains, and sedimentary iron-rich deposits worldwide; field confirmation requires a hardness test, streak, acid test on the matrix, and closer inspection. It is not possible to distinguish confidently from red volcanic rock or iron-stained quartz by image alone.