Jasper, Mookaite var.

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 Cretacious 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.