calcite on quartz - , USA - Geode cavity is greater than 30 cm, Calcite area is about 20 cm
Mineral: calcite on quartz
Locality: Washington County, Indiana, USA
Dimensions: Geode cavity is greater than 30 cm, Calcite area is about 20 cm

Description: Rocky wooded ravine on private land Washington County, Indiana U.S.A. Collected 2014