Spectacular plate polished on one side of ± 14.2 x 4.7 cm cm and weighs 188gr. Intense and very bright color.
The "eye" effect is due to a parallel growth of amphibole fibers (Riebeckite) and the yellow-brown color comes from the oxidation of said fibers to limonite.
"Marra Mamba Iron Formation" northwest of Newman in the Pilbara region of Western Australia.
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