sedimentary

Mookite

Radiolarian Chert (SiO2)

Mookite has a Mohs hardness of 6.5 to 7. It exhibits vibrant colors including red, burgundy, yellow, and cream, with a vitreous to dull luster.

Identified October 18, 2026More sedimentary →

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Physical properties

Mookite has a Mohs hardness of 6.5 to 7. It exhibits vibrant colors including red, burgundy, yellow, and cream, with a vitreous to dull luster.

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

Primarily used as a lapidary stone for cabochons, polished tumbled stones, beads, and ornamental carvings.

Mookite is an Australian jasper uniquely found exclusively in the Kennedy Ranges of Western Australia near Mooka Creek.

Identified by its distinct multicolored banding and microcrystalline quartz structure; sourced locally from 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)