BJ116 Polished "Black Jade" slab. lace agate These rare stromatolites are from

These rare stromatolites are from the “Windidda Formation”

Tumble polished  Snakeskin Jasper

Weighs 268 grams

Dimensions at widest points approximately 150 mm x 160  mm x 10 mm thick

Dimensions at widest points approximately 120 mm x 60 mm x 13 mm thick

BJ116 Polished "Black Jade" slab. lace agate These rare stromatolites are fromBJ116 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.