Sub-communities within this community

Recent Submissions

  • Pyrite with sphalerite 

    Contributor:Raines, Ed; Colorado School of Mines. Geology Museum
    Date:2018
    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.
  • Pyrite 

    Contributor:Raines, Ed; Colorado School of Mines. Geology Museum
    Date:2018
    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 

    Contributor:Raines, Ed; Colorado School of Mines. Geology Museum
    Date:2018
    A large plate of intergrown chalcopyrite crystals with very minor tetrahedrite-tennantite from the Eagle mine, Gilman mining district, Eagle County, Colorado.
  • Rhodochrosite 

    Contributor:Raines, Ed; Colorado School of Mines. Geology Museum
    Date:2018
    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 

    Contributor:Raines, Ed; Colorado School of Mines. Geology Museum
    Date:2018
    Several large clusters of intergrown (former) marcasite crystals that have been replaced by pyrite--on pyrite, on sphalerite.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.
  • Sphalerite variety schalenblende 

    Contributor:Raines, Ed; Colorado School of Mines. Geology Museum
    Date:2018
    Plate of interlocking spheres (botyroidal growth) of sphalerite, referred to as "Schalenblende", from the Eagle mine, Gilman mining district, Eagle County, Colorado.
  • Pyrite 

    Contributor:Raines, Ed; Colorado School of Mines. Geology Museum
    Date:2018
    Plate of interlocking pyritohedral crystals of pyrite from the Eagle mine, Gilman mining district, Eagle County, Colorado.
  • Barite 

    Contributor:Raines, Ed; Colorado School of Mines. Geology Museum
    Date:2018
    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.
  • Dolomite 

    Contributor:Raines, Ed; Colorado School of Mines. Geology Museum
    Date:2018
    Large plate of intergrown, pearly, rhombohedral dolomite crystals from the Eagle mine, Gilman mining district, Eagle County, Colorado.
  • Pyrite 

    Contributor:Raines, Ed; Colorado School of Mines. Geology Museum
    Date:2018
    A single, highly modified cubic crystal from the Eagle mine, Gilman mining district, Eagle County, Colorado.
  • Pyrite 

    Contributor:Raines, Ed; Colorado School of Mines. Geology Museum
    Date:2018
    Small plate of bright, shiny pyrite crystals from the Eagle mine, Gilman mining district, Eagle County, Colorado.
  • Chalcopyrite 

    Contributor:Raines, Ed; Colorado School of Mines. Geology Museum
    Date:2018
    Plate of intergrown chalcopyrite crystals (many are tarnished to irredescent blues and purples) from the Eagle mine, Gilman mining district, Eagle County, Colorado.
  • Sphalerite with siderite 

    Contributor:Raines, Ed; Colorado School of Mines. Geology Museum
    Date:2018
    Lustrous jet black sphalerite crystals with tan siderite from the Eagle mine, Gilman mining district, Eagle County, Colorado.
  • New Jersey Zinc Co. souvenir ingot 

    Contributor:Raines, Ed; Colorado School of Mines. Geology Museum
    Date:2018
    Miniature zinc ingot cast by New Jersey Zinc Co., for sale to tourists as a souvenir .
  • Pyrite with dolomite 

    Contributor:Raines, Ed; Colorado School of Mines. Geology Museum
    Date:2018
    Tiny, tarnished pyrite with sphalerite on pearly crystals of dolomite. This mineral specimen is from the Eagle mine, Gilman mining district, Eagle County, Colorado.
  • Pyrite pseudomorphs after marcasite with minor sphalerite and galena overgrowths 

    Contributor:Raines, Ed; Colorado School of Mines. Geology Museum
    Date:2018
    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, ...
  • Calcite stalactite 

    Contributor:Raines, Ed; Colorado School of Mines. Geology Museum
    Date:2018
    Pearly, off-white stalactite of calcite from the Iron Mask mine, Gilman mining district, Eagle County, Colorado.
  • Chalcopyrite 

    Contributor:Raines, Ed; Colorado School of Mines. Geology Museum
    Date:2018
    Plate of intergrown, shiny golden yellow chalcopyrite crystals from the Eagle mine, Gilman mining district, Eagle County, Colorado.
  • Quartz 

    Contributor:Raines, Ed; Colorado School of Mines. Geology Museum
    Date:2018
    Tapered and etched single quartz crystal from the Eagle mine, Gilman mining district, Eagle County, Colorado.
  • Sphalerite 

    Contributor:Raines, Ed; Colorado School of Mines. Geology Museum
    Date:2018
    Plate of shiny, jet black sphalerite crystals from the Eagle mine, Gilman mining district, Eagle County, Colorado.

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