Pyrargyrite with pen for scale. From the mineral collection of Brigham Young University Department of Geology, Provo, Utah, Mineral Specimens 842. Courtesy of the U.S. Geological Survey Denver Library Photographic Collection. (Photo by Andrew Silver.)

Formula: Ag3SbS3 Hexagonal


Pyrargyrite is a deep red to nearly black mineral found in hydrothermal veins often associated with other silver minerals, galena, pyrite and quartz.

ONEIDA COUNTY: Pyrargyrite occurs at the Lynn massive sulfide deposit, in Lynn township in the SW part of the county. It has so far been recovered only in drill core, where it is associated with silver, acanthite, tetrahedrite and many other minerals (Kennedy et al., 1991).