Mineral: Benstonite
Locality: Minerva I Mine, Ozark-Mahoning group, Cave-in-Rock Sub-District, Hardin County, Illinois, USA
Dimensions: 6.3 x 9.5 cm

Description: Scalenohedral calcite crystals covered with an epitaxial overgrowth of benstonite crystals subsequently coated with a thin film of white Baryte. Collected circa 1960.

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