Fri, 21 Apr 2017 11:28:46 +0000

This is a very, very large concretion in Bosnia. Concretions are formed when minerals are precipitated in the pore spaces between grains of sedimentary rock. ARE YOU SAYING THIS IS A FRIGGEN GIANT GEOD !

This is a very, very large concretion in Bosnia. Concretions are formed when minerals are precipitated in the pore spaces between grains of sedimentary rock.

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