Polished Chert Breccia slab CB118 asperia ashburtonia Dimensions at widest points approximately

Dimensions at widest points approximately 150 mm x 100 mm x 11 mm thick

These interesting mineral oddities occur in the banks of the Gascoyne River about 130 km east of Carnarvon

140 mm x 130 mm x 35 mm thick

Dimensions at widest points approximately 135 mm x 55 mm x 45 mm thick

500 mm x 140 mm x 130 mm thick

Polished Chert Breccia slab CB118 asperia ashburtonia Dimensions at widest points approximatelyCB118 Chert Breccia polished slab. Dimensions at widest points approximately 225 mm x 120 mm x 10 mm thick. Weighs 553 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 400 kms. north of Perth.