BJ121 Polished "Black Jade" slab. black conglomerate Asperia ashburtonia from the Proterozoic

Asperia ashburtonia from the Proterozoic "Duck Creek Dolomite"

From our mining claim at Mindoolah

From near Norseman

Dimensions at widest points approximately 130 mm x 75 mm x 80 mm thick

Quartz & Axinite rough rock

BJ121 Polished "Black Jade" slab. black conglomerate Asperia ashburtonia from the ProterozoicBJ121 Polished "Black Jade" A trade name for metamorphosed magnesian tholeiite (basalt). A slab, cut and polished on one side . Difficult to photograph due to the mirror black polish.. Dimensions at widest points approximately 130 mm x 55 mm x 7 mm thick. It weighs 127 grams. From our mining lease on Ninghan Station in the Midwest region of Western Australia.