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  • Thunder Bay Amethyst Mine
    Thunder Bay Amethyst Mine
    image       Variety of: Quartz, SiO2Uses: Gemstones and ornamental stonesBirthstone for: FebruaryColor: various shades of purpleIndex of refraction: 1.544-1.553Birefringence: 0.009Hardness: 7Cleavage: noneCrystal system: trigonalPleochroic: noAmethyst is the purple variety of quartz and is a popular gemstone. If it were not for its widespread availability,, amethyst would be very expensive. The name 'amethyst' ...
    image     Variety of: Quartz, SiO2Uses: Gemstones and ornamental stonesBirthstone for: FebruaryColor: various shades of purpleIndex of refraction: 1.544-1.553Birefringence: 0.009Hardness: 7Cleavage: noneCrystal system: trigonalPleochroic: noAmethyst is the purple variety of quartz and ...
    Amethyst Mine Panorama
  • Thunder Bay Amethyst Mine
    Thunder Bay Amethyst Mine
    image       A vug showing large clay covered amethyst crystals., A vug is another name for geode - a nodular stone having a cavity lined with crystals.
    image     A vug showing large clay covered amethyst crystals., A vug is another name for geode - a nodular stone having a cavity lined with crystals.
    Amethyst Mine Panorama
  • Thunder Bay Amethyst Mine
    Thunder Bay Amethyst Mine
    image  August 3 1992,     Large clay-covered amethyst crystals, August 3,1992.
    image  August 3 1992,   Large clay-covered amethyst crystals, August 3,1992.
    Amethyst Mine Panorama
  • Thunder Bay Amethyst Mine
    Thunder Bay Amethyst Mine
    image  1970,     Photo showing the site of the main office of the Thunder Bay Amethyst Mine, 1970.
    image  1970,   Photo showing the site of the main office of the Thunder Bay Amethyst Mine, 1970.
    Amethyst Mine Panorama
  • Thunder Bay Amethyst Mine
    Thunder Bay Amethyst Mine
    image  1977,     Shown here is a 1977 photo of an open mining pit at the Thunder Bay Amethyst Mine.
    image  1977,   Shown here is a 1977 photo of an open mining pit at the Thunder Bay Amethyst Mine.
    Amethyst Mine Panorama
  • Thunder Bay Amethyst Mine
    Thunder Bay Amethyst Mine
    image  1986,     Shown here is rock being hosed down to clear off the overburden, in preparation for rock sampling.
    image  1986,   Shown here is rock being hosed down to clear off the overburden, in preparation for rock sampling.
    Amethyst Mine Panorama
  • Thunder Bay Amethyst Mine
    Thunder Bay Amethyst Mine
    image  1976,     Shown in this photo is open pit benching. Benching of a steep work face consists of narrow horizontal steps across the slope. The rock is exposed and then inspected. Open pit benching is used where slopes are sufficiently steep, water supply is available, and there is room for the dump ...
    image  1976,   Shown in this photo is open pit benching. Benching of a steep work face consists of narrow horizontal steps across the slope. The rock is exposed and then inspected. Open ...
    Amethyst Mine Panorama
  • Thunder Bay Amethyst Mine
    Thunder Bay Amethyst Mine
    image  1968,     Shown here is one of the open pits of the Thunder Bay Amethyst Mine.
    image  1968,   Shown here is one of the open pits of the Thunder Bay Amethyst Mine.
    Amethyst Mine Panorama
  • Thunder Bay Amethyst Mine
    Thunder Bay Amethyst Mine
    image  1985,     An aerial view of Thunder Bay Amethyst Mine looking west.
    image  1985,   An aerial view of Thunder Bay Amethyst Mine looking west.
    Amethyst Mine Panorama
  • Thunder Bay Amethyst Mine
    Thunder Bay Amethyst Mine
    image  1985,     An aerial view of the Thunder Bay Amethyst Mine looking south, 1985.
    image  1985,   An aerial view of the Thunder Bay Amethyst Mine looking south, 1985.
    Amethyst Mine Panorama
  • Thunder Bay Amethyst Mine
    Thunder Bay Amethyst Mine
    image  1970's,     Photo showing a front-end loader in a pit at the Thunder Bay Amethyst Mine in the 1970's.
    image  1970's,   Photo showing a front-end loader in a pit at the Thunder Bay Amethyst Mine in the 1970's.
    Amethyst Mine Panorama
  • Thunder Bay Amethyst Mine
    Thunder Bay Amethyst Mine
    image  1960's,     Clearing the land for the future site of the Thunder Bay Amethyst Mine in the late 1960's.
    image  1960's,   Clearing the land for the future site of the Thunder Bay Amethyst Mine in the late 1960's.
    Amethyst Mine Panorama
  • Thunder Bay Amethyst Mine
    Thunder Bay Amethyst Mine
    image  1970's,     A photo of a fork lift with a pallet of sorted amethyst.
    image  1970's,   A photo of a fork lift with a pallet of sorted amethyst.
    Amethyst Mine Panorama
  • Thunder Bay Amethyst Mine
    Thunder Bay Amethyst Mine
    image  1970's,     Photo of an unidentified man preparing to blast rock at the Thunder Bay Amethyst Mine in the 1970's.
    image  1970's,   Photo of an unidentified man preparing to blast rock at the Thunder Bay Amethyst Mine in the 1970's.
    Amethyst Mine Panorama
  • Thunder Bay Amethyst Mine
    Thunder Bay Amethyst Mine
    image  1970's,     Mucking in the open pit, 1970's. Muck is the name popularly applied to rock or ore broken from a pit, trench, or underground working. While it is being shoveled out, a portion may be set aside for sampling. Fractions commonly used are one shovelful in every five, ten, or twenty.
    image  1970's,   Mucking in the open pit, 1970's. Muck is the name popularly applied to rock or ore broken from a pit, trench, or underground working. While it is being shoveled out, ...
    Amethyst Mine Panorama
  • Thunder Bay Amethyst Mine
    Thunder Bay Amethyst Mine
    image  1970's,     A 1970's photo of open pit (07) at Thunder Bay Amethyst Mine.
    image  1970's,   A 1970's photo of open pit (07) at Thunder Bay Amethyst Mine.
    Amethyst Mine Panorama
  • Thunder Bay Amethyst Mine
    Thunder Bay Amethyst Mine
    image  1970's,     A 1970's photo showing the sorting tables for the rock samples at the mining site.
    image  1970's,   A 1970's photo showing the sorting tables for the rock samples at the mining site.
    Amethyst Mine Panorama
  • Thunder Bay Amethyst Mine
    Thunder Bay Amethyst Mine
    image  1970's,     Photo showing the washing and sorting area for rock samples at the Thunder Bay Amethyst Mine in the 1970's.
    image  1970's,   Photo showing the washing and sorting area for rock samples at the Thunder Bay Amethyst Mine in the 1970's.
    Amethyst Mine Panorama
  • Thunder Bay Amethyst Mine
    Thunder Bay Amethyst Mine
    image  1970's,     An open pit mine at Thunder Bay Amethyst Mine in the 1970's.
    image  1970's,   An open pit mine at Thunder Bay Amethyst Mine in the 1970's.
    Amethyst Mine Panorama
  • Thunder Bay Amethyst Mine - Amethyst Vein
    Thunder Bay Amethyst Mine - Amethyst Vein
    image       Fragmented amethyst cemented by mudstone.
    image     Fragmented amethyst cemented by mudstone.
    Amethyst Mine Panorama
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