Calcite - Minerva I Mine, USA - 8.8 x 7.1 x 5.0 cm

Mineral: Calcite
Locality: Minerva I Mine, Ozark-Mahoning group, Cave-in-Rock Sub-District, Hardin County, Illinois, USA
Dimensions: 8.8 x 7.1 x 5.0 cm

Description: Pale yellow scalenohedral calcite crystals to 6.0 cm on a matrix of brown fluorite.