• Ktenasite coating chalcopyrite on sphalerite 

        Author(s):Raines, Ed; Mines Museum of Earth Science
        Date:2017
        Format:born digital; digital photographs
        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 ...
      • Sphalerite with galena, quartz variety amethyst, and minor hematite 

        Author(s):Raines, Ed; Mines Museum of Earth Science
        Date:2017
        Format:born digital; digital photographs
        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 ...
      • Sphalerite on galena 

        Author(s):Raines, Ed; Mines Museum of Earth Science
        Date:2017
        Format:born digital; digital photographs
        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.