Polished Chert Breccia slab CB112 dendritic opal Dimensions at widest points approximately

Dimensions at widest points approximately 600 mm x 390 mm x 20 mm thick

Weighs 580 grams

From Boogardie Station near Mount Magnet

Dimensions approximately 145mm x 75mm x 8mm thick

Dimensions at widest points approximately 140 mm x 80 mm x 8

Polished Chert Breccia slab CB112 dendritic opal Dimensions at widest points approximatelyCB112 Chert Breccia slab, cut and polished on one side . Dimensions at widest points approximately 130 mm x 110 mm x 27 mm thick. Weighs 683 grams. This breccia consists of innumerable angular fragments of assorted rock types but predominantly jasper, quartz and chert. It occurs in the Pinyalling Hills which are located in the midwest region of Western Australia, approximately 200 miles north of Perth.