Rhodochrosite on sphalerite

Abstract

This mineral specimen is from the Eagle mine in the Gilman mining district, Eagle County, Colorado, and shows intergrowths of pink, flattened (discoidal), rhombohedral crystals of rhodochrosite on black sphalerite crystals.

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