Polished Marble Bar Chert slab MB121 black jasper conglomerate 90 mm x 65 mm

90 mm x 65 mm x 50 mm

Weighs 585 grams

MK555   Mookaite

Dimensions at widest points approximately 95 mm x 70 mm x 16 mm thick

Weighs 733 grams

Polished Marble Bar Chert slab MB121 black jasper conglomerate 90 mm x 65 mmMB121 Marble Bar Chert slab polished on one side . Dimensions at widest points approximately 100 mm x 100 mm x 8 mm thick. Weighs 196 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