Polished Marble Bar Chert MB103 stand-up 155 mm x 80 mm

155 mm x 80 mm x 60 mm thick

MK438   Mookaite cut and polished on one side with a rough natural back

Dimensions at widest points approximately 100 mm x 90 mm x 80 mm thick

GRN113  Green Opal & Magnesite slab

AZ133  Azurite sun mineral specimen

Polished Marble Bar Chert MB103 stand-up 155 mm x 80 mmMB103 Marble Bar Chert. Cut and polished on one side with a rough, natural back. Dimensions at widest points approximately 160 mm x 100 mm x 75 mm thick. Weighs 1,205 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