WGNHS
Wisconsin Geological and Natural History Survey

Greenockite

Greenockite with pen for scale. From the mineral collection of Brigham Young University Department of Geology, Provo, Utah, courtesy of the U.S. Geological Survey Denver Library Photographic Collection. (Photo by Andrew Silver.)

Formula: CdS Hexagonal

Description:

Greenockite is a bright yellow mineral formed by hydrothermal fluids. In Wisconsin it is rarely found associated with sphalerite in the deposits of the Upper Mississippi Valley zinc-lead district.

GRANT COUNTY: Occurs at the Trego Mine, on the north edge of Platteville. (Heyl et al., 1959).

IOWA COUNTY: Greenockite occurs at the Dodgeville Mine, Dodgeville. (Heyl et al., 1959).

LAFAYETTE COUNTY: Greenockite occurs at the Liberty Mine, near Jenkynsville, NE sec. 16 T.2N. R.1E. (Heyl et al., 1959).