David K. Joyce Minerals

Cobalt/Gowganda Area, Ontario -Silver Specimens

The Cobalt mining camp has been the source of incredible amounts of silver over the past century. The ore was, for the most part, native silver associated with cobalt-nickel and iron arsenides and antimonides. Over 600 million ounces have been produced from this amazing place. Here are a number of specimens of silver from Cobalt and the relatively nearby Gowganda.

All prices in Canadian dollars. For payment in US$, deduct 16% or multiply by 0.84.

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

Silver, ArsenidesCobalt/Gowganda Area, Ontario -Silver Specimens
  • Item #15693
  • Silver, Arsenides
  • 16.0x12.0x2.8 cm
  • Largest Crystal Size: 20mm
  • $75.00
  • Castle Mine
  • Gowganda
    Ontario, Canada
  • This specimen shows a calcite vein cutting Nipissing Diabase with and alteration halo on either side. Native silver dendrites, coated with arsenide mineralization, probably safflorite, are present along the length of the calcite vein. This piece is sawn on side and rough on the other for an interesting geological and mineralogical study!
Silver, ErythriteCobalt/Gowganda Area, Ontario -Silver Specimens
  • Item #15707
  • Silver, Erythrite
  • 9.5x5.3x3.7 cm
  • Largest Crystal Size: n/a
  • $75.00
  • Larose Mine
  • Cobalt
    Ontario, Canada
  • An old piece, probably from surface workings showing very rich native silver with carbonate and pink erythrite.
Silver, ArsenidesCobalt/Gowganda Area, Ontario -Silver Specimens
  • Item #15709
  • Silver, Arsenides
  • 10.5x8.0x6.6 cm
  • Largest Crystal Size: n/a
  • $120.00
  • Silverfields Mine
  • Cobalt
    Ontario, Canada
  • This portion of a silver arsenide vein has thick plates of silver protruding from it, particularly at one end. As well, the arsenides in the vein are laced with native silver. Rich! Displays well, although it is difficult to photograph. From the last operating silver mine in Cobalt.
Silver, Arsenides, CalciteCobalt/Gowganda Area, Ontario -Silver Specimens
  • Item #17548
  • Silver, Arsenides, Calcite
  • 10.5x7.9x4.4 cm
  • Largest Crystal Size: n/a
  • $275.00
  • Miller Lake O'Brien Mine
  • Gowganda
    Ontario, Canada
  • A vein section of incredibly rich silver, associated with an arsenide, probably mostly safflorite in bright pinky-orange and white calcite. The silver is crystallized in in "herringbone" crystal habit. Country rock is attached to both sides of the vein section. Heavy! Rich!
Silver, ArsenidesCobalt/Gowganda Area, Ontario -Silver Specimens
  • Item #19107
  • Silver, Arsenides
  • 12.5x10.0x1.0 cm
  • Largest Crystal Size: n/a
  • $325.00
  • Beaver Mine
  • Cobalt Mine
    Ontario, Canada
  • A rather spectacular specimen of high grade silver! The piece was sliced out of a vein of about 70% metallic silver associated with cobalt arsenides and some dolomite. There is a little erythrite which allows me to conclude that the arsenides are cobalt based. Polished one side and rough-cut the other. Reminiscent of the best high grade days!
Silver, ArsenidesCobalt/Gowganda Area, Ontario -Silver Specimens
  • Item #16584
  • Silver, Arsenides
  • 6.8x6.1x2.5 cm
  • Largest Crystal Size: n/a
  • $65.00
  • Capitol Mine
  • Gowganda
    Ontario, Canada
  • Beautiful, dendritic native silver branches through orange and grey calcite in this specimen. We usually only see orange calcite from the Gowganda area. Nice!
SilverCobalt/Gowganda Area, Ontario -Silver Specimens
  • Item #16586
  • Silver
  • 13.7x11.8x0.6 cm
  • Largest Crystal Size: 18mm
  • $160.00
  • Beaver-Temiskaming mine
  • Cobalt
    Ontario, Canada
  • Exquisite dendritic silver is laced through the dolomite in this high grade. Beautiful dendrites up to 18mm or so are associated with a small amount of arsenide mineralization. Really nice!
Silver, ArsenidesCobalt/Gowganda Area, Ontario -Silver Specimens
  • Item #16587
  • Silver, Arsenides
  • 14.1x8.5x3.3 cm
  • Largest Crystal Size: n/a
  • $160.00
  • Colonial Mine
  • Cobalt
    Ontario, Canada
  • A very dense specimen of a dark cobalt arsenide that has a myriad of fracture fillings filled with native silver. The dark arsenide is probably a mixture of skutterudite and safflorite. The uncut side of the piece shows very strong weathering to deep red erythrite. Rich and interesting!
Silver, Tremolite-ActinoliteCobalt/Gowganda Area, Ontario -Silver Specimens
  • Item #16589
  • Silver, Tremolite-Actinolite
  • 8.3x9.5x6.3 cm
  • Largest Crystal Size: n/a
  • $125.00
  • Glen Lake Mine
  • Cobalt
    Ontario, Canada
  • A different one! This piece is a fragment of diabase with the front coated by dark green, acicular tremolite-actinolite and then slathered with native silver. Unique!
Silver, ArsenidesCobalt/Gowganda Area, Ontario -Silver Specimens
  • Item #16612
  • Silver, Arsenides
  • 10.2x7.0x2.4 cm
  • Largest Crystal Size: 20mm
  • $120.00
  • Silverfields Mine
  • Cobalt
    Ontario, Canada
  • A super-rich, vein section of gorgeous dendritic silver mineralization. The silver is in the branching, rounded dendrites (as opposed to "herringbons") and has a shroud of arsenide mineralization. The back od the piece is rough and it shows both erythrite and annabergite with indicates that the arsenides are a mixture of minerals. Super rich!
Silver, ArsenidesCobalt/Gowganda Area, Ontario -Silver Specimens
  • Item #17054
  • Silver, Arsenides
  • 7.3x7.4x4.0 cm
  • Largest Crystal Size: n/a
  • $120.00
  • Castle Mine
  • Gowganda
    Ontario, Canada
  • This is a heavy vein section that has had most of the calcite removed to reveal a thick plate of calcite on both side of the vein. The top one is the thickest. The arsenides have not been analysed but appear to be, probably safflorite and skutterudite, although there appear to be others in the mix. Native silver is laced through the arsenides. Rich! Displays well!
Silver, ArsenidesCobalt/Gowganda Area, Ontario -Silver Specimens
  • Item #17070
  • Silver, Arsenides
  • 10.5x6.5x2.4 cm
  • Largest Crystal Size: n/a
  • $130.00
  • Silverfields Mine
  • Cobalt
    Ontario, Canada
  • Beautiful dendritic silver in metallic arsenides are featured in this sawn on one side vein section. Heavy! Excellent example!