• Chalcopyrite with sphalerite

      Raines, Ed; Mines Museum of Earth Science
      Dull, brassy chalcopyrite crystals on resinous brown to darker brown sphalerite. Some of the sphalerite exhibits twinning according to the spinel law, some of which has a polysynthetic habit. This mineral specimen is from the Creede mining district, Colorado.
    • Quartz, variety amethyst on barite

      Raines, Ed; Mines Museum of Earth Science
      Light purple amethyst crystals covering and replacing barite. Mineral specimen is from the Bulldog mine, Bulldog vein, Creede mining district, Colorado.
    • Galena with very thin coating of hematite

      Raines, Ed; Mines Museum of Earth Science
      Grey crystals of galena with a thin reddish coating from the Amethyst mine, Amethyst vein, Creede mining district, Colorado.
    • Pyrite

      Raines, Ed; Mines Museum of Earth Science
      Mineral specimen represents one single pyritohedral crystal and is from the Creede mining district, Colorado.
    • Galena

      Raines, Ed; Mines Museum of Earth Science
      Bright gray, partly skeletal crystal from the Bulldog mine, Bulldog vein, Creede mining district, Colorado.
    • Silver wire

      Raines, Ed; Mines Museum of Earth Science
      Silver wire from the Bulldog mine, Bulldog vein (9360 level), Creede mining district, Colorado.
    • Sphalerite with galena, quartz variety amethyst, and minor hematite

      Raines, Ed; Mines Museum of Earth Science
      Mineral specimen is from the Commodore mine, Amethyst vein system, Creede mining district, Colorado. Some of the sphalerite exhibits twinning according to the spinel law, some of which has a polysynthetic habit. The galena crystals are, at least in part, skeletal with a stairstep arrangement of the cubic form.
    • Sphalerite on galena

      Raines, Ed; Mines Museum of Earth Science
      Mineral specimen is from the Commodore mine, Amethyst vein system, Creede mining district, Colorado. Some of the sphalerite exhibits twinning according to the spinel law, some of which has a polysynthetic habit.
    • Ktenasite coating chalcopyrite on sphalerite

      Raines, Ed; Mines Museum of Earth Science
      Ktenasite is a rare mineral. Some of the sphalerite exhibits twinning according to the spinel law, some of which has a polysynthetic habit. Mineral specimen is from the #5 level tunnel, Commodore mine, Amethyst vein, Creede mining district, Colorado.
    • Sphalerite stalactites

      Raines, Ed; Mines Museum of Earth Science
      Stalactitic growth of sphalerite from the Bulldog mine, Creede mining district, Colorado.
    • Quartz, variety amethyst

      Raines, Ed; Mines Museum of Earth Science
      Quartz, variety amethyst from the Amethyst vein, Creede mining district, Colorado, forming a vug in amethyst vein material.
    • Silver (sawed) with barite

      Raines, Ed; Mines Museum of Earth Science
      A solid mass of native silver from the Bulldog mine, Creede mining district, Colorado.
    • Cerussite

      Raines, Ed; Mines Museum of Earth Science
      Intergrowth of white, cyclically twinned crystals from the Bulldog mine, Bulldog vein, Creede mining district, Colorado.
    • Silver (wires)

      Raines, Ed; Mines Museum of Earth Science
      This mineral specimen is from the Creede mining district, Mineral County, Colorado, and shows a mass of silver wires with quartz.
    • Silver (in jar)

      Raines, Ed; Mines Museum of Earth Science
      Jar of leaf/spangle silver from the Bulldog mine, Creede mining district, Colorado.
    • Silver in chalcedony nodule, in banded chalcedony and amethyst ("sowbelly agate")

      Raines, Ed; Mines Museum of Earth Science
      Cut slab polished on both sides ; one of six slices cut from the same piece of “sowbelly”. Mineral specimen is from the Last Chance mine ("Chance cave", 700' level), Amethyst vein, Creede mining district, Colorado.
    • Silver minerals in petrified wood

      Raines, Ed; Mines Museum of Earth Science
      Mineral specimen is from the Monkeymeyer mine, Creede mining district, Colorado. Petrified wood found in the Monkeymeyer sandstone unit of the Creede formation contained sufficient silver mineralization to be ore. Mr. Monkeymeyer operated a small mine and the sandstone unit was named for him.
    • Quartz, variety amethyst with quartz variety chalcedony; carved sowbelly agate sphere

      Raines, Ed; Mines Museum of Earth Science
      Polished sowbelly agate sphere (quartz variety amethyst with quartz variety chalcedony) from the Last Chance mine, amethyst vein, Creede mining district, Colorado.
    • Sowbelly agate (banded quartz varieties amethyst and chalcedony)

      Raines, Ed; Mines Museum of Earth Science
      Sowbelly agate (banded quartz, varieties amethyst and chalcedony) from the Amethyst vein of Last Chance mine, Creede mining district, Colorado.
    • Barite with micro pyromorphite crystals

      Raines, Ed; Mines Museum of Earth Science
      Intergrowth of colorless blades of barite with a few scattered microcrystals of pyromorphite. Mineral specimen is from Bulldog mine, Bulldog vein, Creede mining district, Colorado.