Sedimentary
Mookaite Jasper
SiO2
Hardness 6.5-7, opaque, vitreous to dull luster, cryptocrystalline structure
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Physical properties
Hardness 6.5-7, opaque, vitreous to dull luster, cryptocrystalline structure
Formation & geological history
Formed as a biogenic sedimentary rock from the skeletal remains of radiolaria in the Windalia Radiolarite formation in Western Australia, dating back to the Cretaceous period.
Uses & applications
Commonly used in jewelry making, lapidary arts, and as a decorative stone.
Geological facts
Mookaite is named after Mooka Creek in Western Australia, where it is found. It is known for its vibrant colors, including red, yellow, mustard, white, and purple.
Field identification & locations
Identify by its distinctive bright, contrasting colors and smooth, opaque appearance. Found exclusively in the Kennedy Ranges near Gascoyne Junction in Western Australia.
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