David K. Joyce Minerals

Cobalt/Gowganda Area, Moose Horn Mine, Elk Lake

This mine is an unusual one, closer to Gowganda than Cobalt. The mineralogy is similar to the other Cobalt/Gowganda Mines but a little more different with significant amounts of nickel minerals such as maucherite and millerite, amongst others. Maucherite was first found at this mine back in the 1910s and was originally called "temiskamite" and was believed to be a new mineral. A year or so after scientists at U. of T. announce the discovery of this new mineral, they found out that Scientists had published the new mineral maucherite in Germany (1913) and that name took precedence. There are a few samples here!

All prices in Canadian dollars. For payment in US$, deduct 19% or multiply by 0.81.

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

Skutterudite, NickelineCobalt/Gowganda Area, Moose Horn Mine, Elk Lake
  • Item #19846
  • Skutterudite, Nickeline
  • 3.6x3,5x2.2 cm
  • Largest Crystal Size: micro
  • $40.00
  • Moose Horn Mine
  • Elk Lake
    Ontario, Canada
  • This specimen is mostly composed of skutterudite (ID'd by EDS) with a nice smattering of nickeline, both of which occur as microcrystals on this specimen.
Millerite, NickelineCobalt/Gowganda Area, Moose Horn Mine, Elk Lake
  • Item #19848
  • Millerite, Nickeline
  • 6.9x4.5x2.5 cm
  • Largest Crystal Size: micro
  • $40.00
  • Moose Horn Mine
  • Elk Lake
    Ontario, Canada
  • While this specimen is mostly nickeline, various other arsenides and calcite, there are thin veinlets composed of mostly millerite that cut through the calcite. It has been etched slightly to reveal many acicular crystals of golden millerite. Excellent example!
Nickeline, CobaltiteCobalt/Gowganda Area, Moose Horn Mine, Elk Lake
  • Item #19850
  • Nickeline, Cobaltite
  • 7.0x4.5x3.0 cm
  • Largest Crystal Size: 1mm
  • $35.00
  • Moose Horn Mine
  • Elk Lake
    Ontario, Canada
  • This specimen shows branching nickeline aggregates that have a coating of finely crystallized cobaltite (EDS). Interesting!
NickelineCobalt/Gowganda Area, Moose Horn Mine, Elk Lake
  • Item #19853
  • Nickeline
  • 3.6x3.4x2.3 cm
  • Largest Crystal Size: 1mm
  • $50.00
  • Moose Horn Mine
  • Elk Lake
    Ontario, Canada
  • There are some very sharp, tapered, lustrous crystals of nickeline on this specimen, exposed by light etching. The piece is mostly nickeline in calcite/dolomite. Nice nickeline crystals!
NickelineCobalt/Gowganda Area, Moose Horn Mine, Elk Lake
  • Item #19854
  • Nickeline
  • 3.2x3.3x1.8 cm
  • Largest Crystal Size: micro
  • $35.00
  • Moose Horn Mine
  • Elk Lake
    Ontario, Canada
  • Most of this specimen is composed of rounded aggregates of nickeline in carbonate matrix. The rounded aggregates are actually aggregates of nickeline crystals, some quite sharp and some of which are exposed by light etching.
NickelineCobalt/Gowganda Area, Moose Horn Mine, Elk Lake
  • Item #19855
  • Nickeline
  • 4.8x3.8x3.2 cm
  • Largest Crystal Size: micro
  • $55.00
  • Moose Horn Mine
  • Elk Lake
    Ontario, Canada
  • A dense specimen of coarsely crystallized metallic nickeline in carbonate matrix. Sharp crystals of nickeline are exposed in places where carbonates have been lightly etched away. Nice!
NickelineCobalt/Gowganda Area, Moose Horn Mine, Elk Lake
  • Item #19856
  • Nickeline
  • 4.7x3.2x1.8 cm
  • Largest Crystal Size: micro
  • $35.00
  • Moose Horn Mine
  • Elk Lake
    Ontario, Canada
  • Rich nickeline composes most of this specimen with areas of calcite that have been slightly etched to show arsenide crystallization, including nickeline.
Nickeline, CobaltiteCobalt/Gowganda Area, Moose Horn Mine, Elk Lake
  • Item #19857
  • Nickeline, Cobaltite
  • 7.9x6.2x3.0 cm
  • Largest Crystal Size: micro
  • $55.00
  • Moose Horn Mine
  • Elk Lake
    Ontario, Canada
  • A dense specimen showing rouded, branching aggregates of nickeline, coated by a thing veneer of tiny cobaltite (EDS) crystals. Rich!
SkutteruditeCobalt/Gowganda Area, Moose Horn Mine, Elk Lake
  • Item #19859
  • Skutterudite
  • 3.8x3.2x1.7 cm
  • Largest Crystal Size: micro
  • $35.00
  • Moose Horn Mine
  • Elk Lake
    Ontario, Canada
  • This piece of, mostly, skutterudite (EDS identified), has some very sharp crystals of this mineral on it. Nice locality specimen.
Ullmannite, Nickeline, CobaltiteCobalt/Gowganda Area, Moose Horn Mine, Elk Lake
  • Item #19860
  • Ullmannite, Nickeline, Cobaltite
  • 6.5x4.3x3.6 cm
  • Largest Crystal Size: 2mm
  • $65.00
  • Moose Horn Mine
  • Elk Lake
    Ontario, Canada
  • Very sharp, elongated cubic cleaved crystal sections of ullmannite (EDS)are embedded in nickeline and associated with cobaltite (EDS). Oyther interesting mineralization, as well!
NickelineCobalt/Gowganda Area, Moose Horn Mine, Elk Lake
  • Item #19861
  • Nickeline
  • 5.8x3.2x2.6 cm
  • Largest Crystal Size: 1mm
  • $50.00
  • Moose Horn Mine
  • Elk Lake
    Ontario, Canada
  • Rounded botryoidal aggregates of sharp nickeline crystals are present in this specimen, in calcite. Some of the calcite has been etched away to better reveal the nickeline crystals.
NickelineCobalt/Gowganda Area, Moose Horn Mine, Elk Lake
  • Item #19864
  • Nickeline
  • 7.0x4.7x3.5 cm
  • Largest Crystal Size: micro
  • $60.00
  • Moose Horn Mine
  • Elk Lake
    Ontario, Canada
  • A rich, dense, mass of orangey-metallic, sort of dendritic crystal aggregates of nickeline. Some of the calcite has been etched away to reveal sharp nickeline crystals. Nice specimen!
NickelineCobalt/Gowganda Area, Moose Horn Mine, Elk Lake
  • Item #19865
  • Nickeline
  • 3.7x3.2x2.0 cm
  • Largest Crystal Size: 1mm
  • $55.00
  • Moose Horn Mine
  • Elk Lake
    Ontario, Canada
  • This specimen is composed of rounded aggregates of sharp, nickeline crystals. A little of the calcite has been etched away to reveal the excellent sharp crystals.
Nickeline, CobaltiteCobalt/Gowganda Area, Moose Horn Mine, Elk Lake
  • Item #19866
  • Nickeline, Cobaltite
  • 4.5x4.1x3.2 cm
  • Largest Crystal Size: micro
  • $55.00
  • Moose Horn Mine
  • Elk Lake
    Ontario, Canada
  • This specimen is composed, mostly, of long, branching aggregates of nickeline that are coated with tiny cobaltite crystals (EDS). Sawn on one side to reveal the mineralogical texture better. Interesting!