Polished Marble Bar Chert MB104 black jasper conglomerate 140 mm x 85 mm

140 mm x 85 mm  x 9

Dimensions at widest points approximately 140 mm  x 75 mm x 8

AZ132  Azurite sun mineral specimen

Dimensions at widest points approximately 160 mm x 95 mm x 80 mm thick

SU145  Sunset Jasper slab

Polished Marble Bar Chert MB104 black jasper conglomerate 140 mm x 85 mmMB104 Marble Bar Chert. Cut and polished on one side with a rough, natural back and a cut base to stand as a display specimen ! Dimensions at widest points approximately 140 mm x 70 mm x 40 mm thick. Weighs 850 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