Mineral: Calcite on Quartz, Calcite on Quartz (variety chalcedony), Calcite on Dolomite
Locality: Indiana, USA
Description: The left side example is 11cm with a single 9cm calcite. Monroe County The middle example is 10cm with an 8cm group of calcites. Monroe County The right side example is 7.5cm with a 4.8cm calcite. Washington County

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