Sunset Jasper polished slab SU197 Marra Mamba The interesting cylindrical cavity is

The interesting cylindrical cavity is all that remain of a fossil belemnite which was a squid-like creature with a tapering torpedo or bullet shaped body

Dimensions at widest points approximately 135 mm x 125 mm x 8

Weighs 418 grams

Dimensions at widest points approximately 190 mm x 130 mm x 30 mm thick

Dimensions at widest points approximately 145 mm x 75 mm x 8 mm thick

Sunset Jasper polished slab SU197 Marra Mamba The interesting cylindrical cavity isSU197 Sunset Jasper slab, cut and polished on one side. Dimensions at widest point approximately 130 mm x 130 mm x 9. 5 mm. Weighs 290 grams. From the Marramamba Iron Formation in the Hamersley Ranges, Western Australia. More correctly an iron rich, banded chert.