Galena, sphalerite, and dolomite/ankerite and minor pyrite

Abstract

Metallic-gray galena cubes and small shiny black sphalerite crystals mixed with zoned white rhombohedrons of dolomite covered by an outer layer of tan ankerite. Minor pyrite crystals are also scattered over the specimen which is 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.