Polished Marillana Conglomerate MC117 stromatolite GRN110 Green Opal rough rock
Description
GRN110 Green Opal rough rock
Weight 636 grams
Chinese Writing Stone is a porphyritic basalt (porphyry) with groups and rosettes of plagioclase feldspar
Small quartz crystals visible in cavity
AZ130 Azurite sun mineral specimen
Polished Marillana Conglomerate MC117 stromatolite GRN110 Green Opal rough rockMC117 Marillana Conglomerate rough rock, cut and polished on one side with a natural back. Dimensions at widest points approx. 130 mm x 110 mm x 30 mm thick. Weight is 605 grams. From Marillana station in the Pilbara region of Western Australia. Conglomerate is a sedimentary rock consisting of individual pebbles (clasts) within a finer grained matrix that have become cemented together. Conglomerates are a very common rock type that occur in numerous
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