Polished fossil Oncolite slab. ONC117 chrysoprase It weighs 230 grams
Description
It weighs 230 grams
Weighs 165 grams
Face is approximately 105mm x 50mm and 7mm thick
Polished petrified wood slab
Eucryptite is a lithium aluminium silicate that occurs in LCT pegmatites
Polished fossil Oncolite slab. ONC117 chrysoprase It weighs 230 gramsONC117. 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. 160 mm x 80 mm x 8. 5 mm thick. Weighs 217 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
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