Minerals / Jasper, Mookaite var.

Mookaite is a local name attributed to this jasper, SiO2.  It is so named because it is from Mooka creek, Carnarvon Shire, near the Kennedy ranges in western  Australia. It's geological origin is from the Windalia Radiolarite, a lower Cretaceous siltstone which outcrops over the Carnarvon basin. It was collected, cut and polished by founder member of the club, Jim Nicholls, while working in Australia.

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