Knoxville, Marion Co., Iowa

9.3 x 6.5 x 5.8 cm
3.7 x 2.6 x 2.3 in

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White colored, double terminated, scalenohedral Calcite crystals rested on a bed of dark brown Calcite crystals which exhibit a green iridescence. From one of the now closed coal mines in the area and likely collected in to 1960s or 1970s.

Condition: Good

Flaws: On some of the large white Calcite crystals, there are small cleaves on the terminations.

This mineral is also found in the following galleries: Minerals From the United States | Calcite | Minerals Priced Between 50 and 99 Dollars