BJ116 Polished "Black Jade" slab. lace agate Weighs 940 grams

Weighs 940 grams

These rare stromatolites are from the “Windidda Formation”

Porphyry is a general term that is used rather loosely for  igneous rocks which contain relatively large isolated crystals set in a fine-grained groundmass

Dimensions at widest points approximately 190 mm x 150 mm x 10 mm thick

Weighs 268 grams

BJ116 Polished "Black Jade" slab. lace agate Weighs 940 gramsBJ116 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 180 mm x 75 mm x 8 mm thick. It weighs 246 grams. From our mining lease on Ninghan Station in the Midwest region of Western Australia.