Calcite

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A 2.8 x 2.7 cm, lustrous, translucent, twinned, tan calcite crystal aesthetically dominates a field of smaller calcite rhombs on this fine specimen from an uncommon Eastern Colorado locality - La Junta, Otero County. The calcite rhombs are attached to an earlier generation of banded calcite. These calcites come from concretions in the Cretaceous-aged Pierre Shale. Ex. Karl Warning and Marty Zinn Collections.