David K. Joyce Minerals

Cobalt/Gowganda Area -Ex. Shartner Collection

The late Gus Shartner was manager of the Siscoe Mine back in the late 1950's. He managed to collect some interesting specimens from the mine, which I have recently purchased from his family. Here they are!

All prices in Canadian dollars. For payment in US$, deduct 22% or multiply by 0.78.

Click on any of the following thumbnails to view a larger image of the specimen.

Silver, ArsenopyriteCobalt/Gowganda Area -Ex. Shartner Collection
  • Item #13635
  • Silver, Arsenopyrite
  • 12.0x8.3x4.8 cm
  • Largest Crystal Size: a-7mm
  • $110.00
  • Siscoe Mine
  • Cobalt
    Ontario, Canada
  • Interesting mineralogical texture here! This piece shows relatively large crystal sections of arsenopyrite thickly embedded in both calcite and wall rock. Of course there is lots of native silver in between the arsenopyrite crystals and in a peculiar line that runs diagonally through the specimen. Rough one side and sawn on the other so that you can see mineralogical texture from two perspectives. Nice!
SilverCobalt/Gowganda Area -Ex. Shartner Collection
  • Item #13643
  • Silver
  • 7.7x5.3x3.4 cm
  • Largest Crystal Size: micro
  • $125.00
  • Siscoe Mine
  • Cobalt
    Ontario, Canada
  • This is a very unusual specimen. It is composed of massive, glassy arsenate compounds with a kind of plating of crystalline silver. All of the "white" that you can see is silver. There are also tiny wires of silver in interstices here and there. Very interesting piece.