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TIR175 Tiger Iron rough rock
Weighs 585 grams
CLA263 Australian Crazy Lace Agate slab
cut and polished on one side with a rough naturally weathered back
One edge slightly unpolished
Polished fossil Oncolite slab. ONC116 toredo TIR175 Tiger Iron rough rockONC116. Fossil Oncolite polished slab. From the Miocene "Trealla Limestone" north of Carnarvon, Western Australia . Age is approx. 15 million years. Dimensions at widest points approx. 105 mm x 85 mm x 7 mm thick. Weighs 134 grams. Oncolite is a limestone composed largely of oncoidsrounded, coated grains that grow as thin layers of lime mud accumulate around a tiny nucleus (such as a sand grain or shell fragment) under microbial influence. Formed in
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