mineral

Banded jasper (likely mookaite or brecciated jasper)

Microcrystalline quartz/chalcedony (SiO₂) with iron-oxide and clay inclusions

AI-generated identification · may be incorrect

Opaque, cream-white, yellow, red, and brown banding with earthy to dull/waxy luster; hardness about 6.5–7 Mohs, no cleavage, conchoidal to uneven fracture, and typical specific gravity around 2.5–2.7. The irregular colored layers suggest jasper rather than a transparent agate.

Identified August 15, 2026More mineral →

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Physical properties

Formation & geological history

Forms when silica-rich fluids replace or cement fine sediment, incorporating iron oxides that produce red, orange, and yellow colors; commonly Cenozoic to older sedimentary volcanic-environment material. Exact age and locality cannot be determined from the photograph.

Uses & applications

Used for cabochons, carvings, polished slabs, beads, and ornamental objects; attractive lapidary-grade pieces are collectible, while industrial use is minor.

Geological facts

Jasper is a dense, opaque variety of chalcedony and microcrystalline quartz. Mookaite is a colorful jasper associated especially with the Kennedy Ranges of Western Australia, but visual identification alone cannot confirm that locality.

Field identification & locations

Identify by its opaque fine-grained texture, multicolor iron staining, lack of visible large crystals, and ability to scratch glass; a streak, hardness, and locality test would help distinguish it from painted or cemented material. Common jasper occurs worldwide, notably Australia, India, Madagascar, Brazil, and the western United States.