sedimentary

Mookaite Jasper

Silicified radiolarit

Hardness of 6-7 on Mohs scale, exhibits distinct earthy bands of pink, red, yellow, and cream with a vitreous to dull luster and conchoidal fracture.

Identified October 17, 2026More sedimentary →

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Physical properties

Hardness of 6-7 on Mohs scale, exhibits distinct earthy bands of pink, red, yellow, and cream with a vitreous to dull luster and conchoidal fracture.

Formed from the skeletons of single-celled radiolaria deposited in marine environments during the Cretaceous period.

Used primarily for cabochons, beads, ornamental carvings, and by mineral collectors.

Mookaite is exclusively mined from a single locality in Western Australia near Mooka Creek.

Identify by its unique multicolored banding and dense, opaque microcrystalline quartz structure; found strictly in Western Australia.

Fossil-bearing concretion, possibly containing a fossil shell or other organic inclusion

Calcareous concretion; exact fossil and host-rock composition are not identifiable from the image

Fossiliferous Sedimentary Rock

Sedimentary limestone with invertebrate fossil imprint

Sandstone or Siltstone

Arenite (if sandstone)

Sandstone

Arenite

Shale

Shale (clastic sedimentary rock)

Shale (or Mudstone/Siltstone)

Sedimentary Mudrock (SiO2, Al2O3 base with clay minerals)