David K. Joyce

Cobalt/Gowganda, Ontario -Various Species

Although Cobalt was famous for the vast quantities of silver mined there over many decades, many other minerals, some fairly rare, have been found there in impressive specimens, confirmed by electron microprobe analysis. Here are some.

All prices in Canadian dollars. For payment in US$, deduct 21% or multiply by 0.79.

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

Skutterudite, ArsenopyriteCobalt/Gowganda, Ontario -Various Species
  • Item #18023
  • Skutterudite, Arsenopyrite
  • 9.0x8.8x6.0 cm
  • Largest Crystal Size: 11mm
  • $150.00
  • Hudbay (Rustex) Mine
  • Gowganda
    Ontario, Canada
  • The top of this specimen reveals an opening exposed by etching calcite away. The opening is lined with sharp, classic crystals of skutterudite showing typically lop-sided cubes with smaller cube-octahedral crystals of skutterudite on the bigger faces. Really an excellent specimen of this mineral from a classic location! Some tiny arsenopyrite crystals are scattered around. Shows well!
Silver, SkutteruditeCobalt/Gowganda, Ontario -Various Species
  • Item #20850
  • Silver, Skutterudite
  • 8.5x6.2x4.8 cm
  • Largest Crystal Size: n/a
  • $140.00
  • Beaver Mine
  • Cobalt
    Ontario, Canada
  • This specimen is mostly composed of bladed crystals of safflorite arranged in hemispherical aggregates, TOTALLY laced through with native silver, which sticks out as hacly barbs all over. Some tiny skutterudite crystals here and there on the safflorite. VERY high grade! Heavy and nice!
Safflorite, NickelineCobalt/Gowganda, Ontario -Various Species
  • Item #21512
  • Safflorite, Nickeline
  • 8.3x5.3x5.7 cm
  • Largest Crystal Size: 1mm
  • $120.00
  • Nipissing 73 Mine
  • Cobalt
    Ontario, Canada
  • This is an interesting, different one! Very elongated lobes of nickeline are coated with silver-grey safflorite crystals. The lobes are mostly safflorite but have narrow, hollow interiors that may have been filled with silver or some other mineral, at some time. The nickeline would then be some sort of pseudomorph. Looks great, anyway!
Silver, Nickeline, BreithauptiteCobalt/Gowganda, Ontario -Various Species
  • Item #21736
  • Silver, Nickeline, Breithauptite
  • 9.0x5.4x0.7 cm
  • Largest Crystal Size: n/a
  • $65.00
  • HiHo Mine
  • Cobalt
    Ontario, Canada
  • This specimen is sawn on both sides to reveal very rich native silver occurring in carbonates and nickeline with a smattering of breithauptite. Rich and interesting vein section.
Lollingite, QuartzCobalt/Gowganda, Ontario -Various Species
  • Item #22017
  • Lollingite, Quartz
  • 3.4x3.6x4.6 cm
  • Largest Crystal Size: 2mm
  • $40.00
  • O'Brien Mine
  • Cobalt
    Ontario, Canada
  • The top of this rock matrix is covered with a botryoidal arsenide, possibly lollingite or safflorite that is in turn, thickly sprinkled with 1-2mm lollingite crystals. Interesting AND looks good!
Skutterudite, Cobaltite (Dendrite)Cobalt/Gowganda, Ontario -Various Species
  • Item #22521
  • Skutterudite, Cobaltite (Dendrite)
  • 10.6x8.0x3.8 cm
  • Largest Crystal Size: n/a
  • $75.00
  • Cobalt Lode Mine
  • Cobalt
    Ontario, Canada
  • THIS is a cool piece! You can see the thick bands of solid skutterudite on both sides of the specimen. Branching out from the skutterudite into the carbonate are dendrites of cobaltite. Dense. Interesting. Looks great.
ProustiteCobalt/Gowganda, Ontario -Various Species
  • Item #22527
  • Proustite
  • 4.0X2.8X2.0 cm
  • Largest Crystal Size: n/a
  • $65.00
  • O'Brien Mine
  • Cobalt
    Ontario, Canada
  • This specimen doesn't look like much but it is almost entirely composed of proustite. You can see the red internal colouration well in places. It appears to have formed and weathered out of a friable matrix. An oldy from the early days of Cobalt.
Safflorite, Skutterudite, NickelineCobalt/Gowganda, Ontario -Various Species
  • Item #22856
  • Safflorite, Skutterudite, Nickeline
  • 10.2x8.7x6.1 cm
  • Largest Crystal Size: 13mm
  • $140.00
  • Nipissing 404 Shaft
  • Cobalt
    Ontario, Canada
  • This is an interesting piece! The larger crystals appear to be epimorphs of safflorite after skutterudite crystals. Under the epimorphs there is nickeline, some of which is in small crystals. The top of the epimorphs are sprinkled or covered with tiny, sparkly skutterudite crystals. Displays very well, just as in the photos. Excellent!
Safflorite, Skutterudite, NickelineCobalt/Gowganda, Ontario -Various Species
  • Item #22859
  • Safflorite, Skutterudite, Nickeline
  • 9.3x7.7x3.0 cm
  • Largest Crystal Size: 2mm
  • $75.00
  • Nipissing 404 Shaft
  • Cobalt
    Ontario, Canada
  • This specimen appears to be a botryoidal covering of safflorite with some nickeline in the interior of the botryoids, as well. The botryoidal minerals are largely covered with tiny, sparkling skutterudite crystals. Interesting specimen of these minerals.
Nickeline, Rammelsbergite, Skutterudite, SaffloriteCobalt/Gowganda, Ontario -Various Species
  • Item #22862
  • Nickeline, Rammelsbergite, Skutterudite, Safflorite
  • 6.7x6.9x3.4 cm
  • Largest Crystal Size: n/a
  • $75.00
  • Nipissing 404 Shaft
  • Cobalt
    Ontario, Canada
  • This specimen of botryoidal arsenides shows layers of nickeline, rammelsbergite and skutterudite with a thin skin of safflorite in places. Interesting AND looks great!
Kainosite-(Y), ArsenidesCobalt/Gowganda, Ontario -Various Species
  • Item #22868
  • Kainosite-(Y), Arsenides
  • 6.4x3.1x3.0 cm
  • Largest Crystal Size: 1.5mm
  • $40.00
  • Cobalt Lode Mine
  • Cobalt
    Ontario, Canada
  • A single brick-red kainosite crystal with altered exterior, is perfectly perched on a quartz crystal and tucked away in a protective opening in this safflorite, arsenopyrite and skutterudite matrix.