Calcite on Quartz - Kangjianwan Mine, China - Specimen size ~ 18 cm
Mineral: Calcite on Quartz
Locality: Kangjianwan Mine, Shuikoushan ore field, Changning, Hengyang Prefecture, Hunan Province, China
Dimensions: Specimen size ~ 18 cm

Description: Collection Terra Mineralia, Freiberg (my photo)