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

Dimensions at widest points approximately 200 mm x 50 mm x 10 mm thick

DO201  Dendritic Opal slab

Weighs 130 grams

210 mm x 125 mm  x 17 mm

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

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.