Polished fossil stromatolite. Carawine Dolomite CD104 Wyloo agate IRR 132 Fossil stromatolite slab

IRR 132    Fossil stromatolite slab

120mm x 100mm x 30-50mm thick

Weighs 75 grams

The porphyry pictured here has pinkish coloured clinozoisite crystals set in a ground mass of dolerite

Polished fossil stromatolite. Carawine Dolomite CD104 Wyloo agate IRR 132 Fossil stromatolite slabCD104 Fossil stromatolite, polished on one side with natural weathered exterior. Dimensions at widest points approx. 180 mm x 105 mm x 40 mm thick. Weighs 1,192 grams. The "Carawine Dolomite" is a geological formation that occurs in numerous isolated areas in the eastern part of the Hamersley Basin in the Pilbara region of Western Australia. It contains numerous occurrences of stromatolites and oncolites with an age of between 2. 5 to 2. 6 billion