Polished Marble Bar Chert slab MB108 peanut wood 45 mm x 40 mm

45 mm x 40 mm  x 18 mm

160 mm x 75 mm x 20 mm thick

Weighs:  102 grams

150 mm x 90 mm  x 45 mm

OG189   A matching pair of polished Orbicular Granite halves with natural rough backs

Polished Marble Bar Chert slab MB108 peanut wood 45 mm x 40 mmMB108 Marble Bar Chert slab polished on one side . Dimensions at widest points approximately 130 mm x 65 mm x 16 mm thick. Weighs 265 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