Polished fossil Oncolite. ONC111 rare It weighs 834 grams

It weighs 834 grams

Dimensions at widest points approximately 115 mm x 85 mm x 50 mm thick

TI278   Tiger Iron slab

Weighs 702 grams

AZ120  Azurite sun mineral specimen

Polished fossil Oncolite. ONC111 rare It weighs 834 gramsONC111. 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. 140 mm x 100 mm x 6. 5 mm thick. Weighs 204 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