Pyrite with sphalerite

Abstract

Intergrowth of pyrite crystals exhibiting cubic and pyritohedral crystal forms with shiny, jet-black sphalerite crystals from the Eagle mine, Gilman mining district, Eagle County, Colorado.

For more information about the Minerals of Gilman, Colorado and the collection, see: http://libguides.mines.edu/GeologyMuseum/digitalcollectionsGilman.