Polished Chert Breccia CB120 brecciated Dimensions at widest points approximately

Dimensions at widest points approximately 210 mm x 165 mm x 11 mm thick

150 mm x 100 mm x 45 mm

Dimensions approximately 100 mm x 75 mm x 8 mm thick

CO101  DeGrussa copper ore slab

An unusual feature of some pieces are septarian structures with black colouration

Polished Chert Breccia CB120 brecciated Dimensions at widest points approximatelyCB120 Chert Breccia, cut and polished on one side with a partial natural rough back and cut to sit as a display specimen. Dimensions at widest points approximately 160 mm x 110 mm x 45 mm thick. Weighs 637 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.