David K. Joyce's Photo Gallery

GXY-73TPyrite FeS₂ , Calcite CaCO₃

Birchtree Mine, Thompson, Moab-Setting Lakes area, Thompson Nickel Belt, Manitoba, Canada

Dimensions: 93 mm x 77 mm x 25 mm
Largest Crystal Size: 16 mm

Pyrite, Calcite.

I collected this specimen during an underground visit to Birchtree mine. The engineer told me there was a vug on 27 Level, so we went there during lunch time. The scooptram operator lifted me up and I pulled this piece out of the vug. Nothing else of interest in the pocket!

J4K-N7FSilver Ag

Cobalt area, Cobalt-Gowganda region, Timiskaming District, Ontario, Canada

Dimensions: 63 mm

Silver

A small, glass, vial of silver wires. No specific mine attribution.

TRJ-0X7Silver Ag

O'Brien Mine, Coleman Township, Cobalt area, Cobalt-Gowganda region, Timiskaming District, Ontario, Canada

Dimensions: 92 mm

Silver

An antique, corked, glass bottle containing silver wires. Obtained in an exchange.

3EG-CMKSilver Ag

Right of Way Mine, Coleman Township, Cobalt area, Cobalt-Gowganda region, Timiskaming District, Ontario, Canada

Dimensions: 121 mm x 115 mm x 3 mm

Silver

Obtained in an exchange with a major museum. This leaf/plate of native silver was collected by A.A. Cole, mining engineer employed by the Ontario Northland Railroad to administer the silver veins that were within the right of way of the railroad.

D2E-PCCSilver Ag

Cobalt area, Cobalt-Gowganda region, Timiskaming District, Ontario, Canada

Dimensions: 125 mm

Silver

Obtained in an exchange with a major museum. Just wires of silver, in an apothecary jar, accumulated by someone, in the past.

MPD-224Stephanite Ag₅SbS₄ , Acanthite Ag₂S

Keeley-Frontier Mine, South Lorrain Township, Cobalt-Gowganda region, Timiskaming District, Ontario, Canada

Dimensions: 89 mm x 65 mm x 25 mm
Largest Crystal Size: 15 mm

Stephanite, Acanthite

A specimen obtained in an Exchange with a prominent museum. The stephanite crystals are thick-tabular crystals, to 15mm across, that are partially shrouded with argentite crystals. Excellent specimen of stephanite!

708-QG8Stibarsen AsSb , Quartz SiO₂

Engineer Gold Mine, Tagish Lake, Atlin Mining Division, British Columbia, Canada

Dimensions: 117 mm x 105 mm x 85 mm

Stibarsen

Obtained in an exchange with a large museum. It is very possible that this specimen was one of a number that were gifted to the museum by Captain Alexander, owner of the Engineer Mine back in the 1910s.

GM7-361Fluorapatite Ca₅(PO₄)₃F , Calcite CaCO₃

Canoe Lake roadcut, Bedford Township, Frontenac County, Ontario, Canada

Dimensions: 92 mm x 80 mm x 48 mm
Largest Crystal Size: 83 mm

Fluorapatite, Calcite

Purchased as part of a larger specimen at the Rochester Mineralogical Symposium in 1990. I broke the large piece into three specimens and this was the nicest. The crystal is repaired although not where it might appear repaired in the photos. The break is naturally healed and that is calcite in the crack!

1X3-RL5Calcite CaCO₃ , Sphalerite ZnS , Pyrrhotite Fe_1-xS

Sudbury area, McKim Township, Greater Sudbury, Ontario, Canada

Dimensions: 70 mm x 62 mm x 55 mm
Largest Crystal Size: 54 mm

Calcite, Sphalerite

Purchased at the 1990 Rochester Mineralogical Symposium. No specific mine identified.

AK2-49XIlmenite Fe²⁺TiO₃ , Magnetite Fe²⁺Fe³⁺₂O₄

Bentley Lake occurrence, Faraday Township, Hastings County, Ontario, Canada

Dimensions: 185 mm x 130 mm x 105 mm

Magnetite, Ilmenite

A large combination specimen of the two main minerals that occur at this locality; Magnetite and Ilmenite.