Polished Marble Bar Chert slab MB102 mookarite Dimensions at widest points approximately

Dimensions at widest points approximately 115 mm x 75 mm x 40 mm thick

AZ157  Azurite sun mineral specimen

A bulk assortment from various Australian locations

KA147   Kumarina Agate

Polished Marble Bar Chert slab MB102 mookarite Dimensions at widest points approximatelyMB102 Marble Bar Chert slab, polished on one side. Dimensions at widest points approximately 130 mm x 100 mm x 8. 6 mm thick. Weighs 248 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