A BOWL OF BANDED IRON TIGER EYE MT BROCKMAN STATION, AUSTRALIA From the early Proterozoic (circa 2.5 billion years ago) the specimen of Marra Mamba iron formation with a broad chatoyant band, cut and polished to form an asymmetric bowl. The base cut flat, marked DW. 9 ½ x 12 x 8 ½in. (24 x 30.5 x 20cm.)
A BOWL OF BANDED IRON TIGER EYE MT BROCKMAN STATION, AUSTRALIA From the early Proterozoic (circa 2.5 billion years ago) the specimen of Marra Mamba iron formation with a broad chatoyant band, cut and polished to form an asymmetric bowl. The base cut flat, marked DW. 9 ½ x 12 x 8 ½in. (24 x 30.5 x 20cm.)
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