Details
From the early Proterozoic (circa 2.5 billion years ago) the slice of Marra Mamba iron formation cut and polished, supported on chromed base.
17 x 14 x 4¼in. (43 x 35.5 x 10.5cm.)


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Lot Essay

Found only in the blue crocidolite seams of the Hamersley Range in the Pilbara region of Western Australia, this highly iridescent ironstone, Marra Mamba, is amongst the rarest and most colourful of all Tiger-eye. Probably stromatolitic in origin, this fossil is amongst the earliest signs of life on Earth, and as a semi-precious stone is also one of the most beautiful.

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