Polished Marble Bar Chert slab MB112 axinite CC121 Chrome chalcedony slab

CC121  Chrome chalcedony slab

Unusual webbing in this piece with small oxidised cubic pyrite inclusions

It weighs 432 grams

Dimensions 130 mm x 80 mm x 50 mm thick

Dimensions at widest points approximately 165 mm x 100 mm x 80 mm thick

Polished Marble Bar Chert slab MB112 axinite CC121 Chrome chalcedony slabMB112 Marble Bar Chert slab polished on one side . Dimensions at widest points approximately 120 mm x 105 mm x 7 mm thick. Weighs 195 grams. Marble Bar chert is a finely banded, iron rich silica rock from the Marble Bar Chert Member (Warrawoona Group) of Western Australia. Formed in shallow Archean seas, it dates to the Paleoarchean (~3. 46 billion years old), making it one of the Earths oldest well preserved sedimentary rocks. From near the town of