Polished Marble Bar Chert MB124 Nickeloan magnesite DOT102 Tumble polished Dendritic Opal

DOT102  Tumble polished Dendritic Opal

CO111  DeGrussa copper ore slab

Dimensions at widest points approximately 125 mm x 90 mm x 9

Weighs 375 grams

RH308  Rhodonite rock

Polished Marble Bar Chert MB124 Nickeloan magnesite DOT102 Tumble polished Dendritic OpalMB124 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 225 mm x 130 mm x 65 mm thick. Weighs 3,237 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