• 

  Pyrite

  Raines, Ed; Mines Museum of Earth Science

  A cluster of pyrite crystals exhibiting the pyritohedral crystal form. Mineral specimen is from the Eagle mine, Gilman mining district, Eagle County, Colorado.
• 

  Chalcopyrite with minor tetrahedrite-tennantite

  Raines, Ed; Mines Museum of Earth Science

  A large plate of intergrown chalcopyrite crystals with very minor tetrahedrite-tennantite from the Eagle mine, Gilman mining district, Eagle County, Colorado.
• 

  Pyrite with sphalerite

  Raines, Ed; Mines Museum of Earth Science

  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.
• 

  Rhodochrosite

  Raines, Ed; Mines Museum of Earth Science

  A large mass of intergrown pink, disc-shaped, flattened rhombohedral crystals from the Eagle mine, Gilman mining district, Eagle County, Colorado.
• 

  Pyrite, pseudomorph after marcasite with pyrite and sphalerite

  Raines, Ed; Mines Museum of Earth Science

  Several large clusters of intergrown (former) marcasite crystals that have been replaced by pyrite--on pyrite, on sphalerite. This mineral specimen is from the Eagle mine, Gilman mining district, Eagle County, Colorado.
• 

  Barite

  Raines, Ed; Mines Museum of Earth Science

  Mineral specimen is from the Rocky Point claim, Eagle mine, Gilman mining district, Eagle County, Colorado, and shows intergrown translucent to transparent golden-brown crystals completely covering the specimen matrix.
• 

  Pyrite

  Raines, Ed; Mines Museum of Earth Science

  Plate of interlocking pyritohedral crystals of pyrite from the Eagle mine, Gilman mining district, Eagle County, Colorado.
• 

  Dolomite

  Raines, Ed; Mines Museum of Earth Science

  Large plate of intergrown, pearly, rhombohedral dolomite crystals from the Eagle mine, Gilman mining district, Eagle County, Colorado.
• 

  Sphalerite variety schalenblende

  Raines, Ed; Mines Museum of Earth Science

  Plate of interlocking spheres (botyroidal growth) of sphalerite, referred to as "schalenblende", from the Eagle mine, Gilman mining district, Eagle County, Colorado.
• 

  Pyrite

  Raines, Ed; Mines Museum of Earth Science

  A single, highly modified cubic crystal from the Eagle mine, Gilman mining district, Eagle County, Colorado.
• 

  Chalcopyrite

  Raines, Ed; Mines Museum of Earth Science

  Plate of intergrown chalcopyrite crystals (many are tarnished to irredescent blues and purples) from the Eagle mine, Gilman mining district, Eagle County, Colorado.
• 

  New Jersey Zinc Co. souvenir ingot

  Raines, Ed; Mines Museum of Earth Science

  Miniature zinc ingot cast by New Jersey Zinc Co., for sale to tourists as a souvenir.
• 

  Pyrite

  Raines, Ed; Mines Museum of Earth Science

  Small plate of bright, shiny pyrite crystals from the Eagle mine, Gilman mining district, Eagle County, Colorado.
• 

  Sphalerite with siderite

  Raines, Ed; Mines Museum of Earth Science

  Lustrous jet black sphalerite crystals with tan siderite from the Eagle mine, Gilman mining district, Eagle County, Colorado.
• 

  Chalcopyrite

  Raines, Ed; Mines Museum of Earth Science

  Plate of intergrown, shiny golden yellow chalcopyrite crystals from the Eagle mine, Gilman mining district, Eagle County, Colorado.
• 

  Calcite stalactite

  Raines, Ed; Mines Museum of Earth Science

  Pearly, off-white stalactite of calcite from the Iron Mask mine, Gilman mining district, Eagle County, Colorado.
• 

  Pyrite with dolomite

  Raines, Ed; Mines Museum of Earth Science

  Tiny, tarnished pyrite with sphalerite on pearly crystals of dolomite. This mineral specimen is from the Eagle mine, Gilman mining district, Eagle County, Colorado.
• 

  Quartz

  Raines, Ed; Mines Museum of Earth Science

  Tapered and etched single quartz crystal from the Eagle mine, Gilman mining district, Eagle County, Colorado.
• 

  Pyrite pseudomorphs after marcasite with minor sphalerite and galena overgrowths

  Raines, Ed; Mines Museum of Earth Science

  Cluster of intergrown (former) marcasite crystals that have been replaced by pyrite. Some surfaces have minor overgrowths of galena and sphalerite. This mineral specimen is from the Eagle mine, Gilman mining district, Eagle County, Colorado.
• 

  Sphalerite with minor pyrite

  Raines, Ed; Mines Museum of Earth Science

  Irregular mass of sphalerite crystals (with an iridescent tarnish) and a few scattered pyrite crystals from the Eagle mine, Gilman mining district, Eagle County, Colorado.

View more