Polished Chert Breccia slab CB118 rock block Dimensions at widest points approximately

Dimensions at widest points approximately 125 mm x 70 mm x 12 mm thick

DO201  Dendritic Opal slab

Dimensions at widest points approximately 115 mm x 55 mm x 25 mm thick

Dimensions at widest points approximately 120 mm x 100 mm x 60 mm thick

Weighs 130 grams

Polished Chert Breccia slab CB118 rock block 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.