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Calcite with Marcasite inclusions on Dolomite and Quartz<br />Afloramientos Carretera Estatal 37, Harrodsburg, Clear Creek, Condado Monroe, Indiana, USA<br />geode is about 14 cm, cavity is about 10 cm, largest calcite is about 4.5 cm<br /> (Author: Bob Harman)

Calcite with Marcasite inclusions on Dolomite and Quartz
Afloramientos Carretera Estatal 37, Harrodsburg, Clear Creek, Condado Monroe, Indiana, USA
geode is about 14 cm, cavity is about 10 cm, largest calcite is about 4.5 cm
(Author: Bob Harman)