Polished Dendritic Opal DO172 magnesite 180 mm x 100 mm fossil stromatolite It weighs 276 grams POT124
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Description
Polished Dendritic Opal DO172 magnesite 180 mm x 100 mm fossil stromatolite It weighs 276 grams POT124 180 mm x 100 mm x 35 mm thick The quartz epidote axinite mineralisation was evidently caused by hydrothermal activity related to the doleritic sills which are in close proximity to the occurrence