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- Availability
- Sold
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- Featured in Special Editions
- Locality
- Silverfields mine, Cobalt dist., Ontario, Canada
- Formula
- PbS
- Size
- Cabinet 9.5x8x1cm
- Tagged
- Ore Minerals
Excellent slab of Galena with Arsenopyrite and Chalcopyrite mostly likely from Petruk's group 5 mineralization, the Fe-As assemblage. This assemblage is characterized be a high content of Arsenopyrite. Cobalt was a world class Silver deposit which was discovered by a blacksmith in 1903. The pop-up photos show some unique and unusual ore textures.
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- Sold
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- Wheal Jane, Kea, St. Day dist., Cornwall, England
- Formula
- PbS
- Size
- SmCabinet 6x6x4cm
- Tagged
- sulfide
Nice representative specimen of Galena from the Wheal Jane mine with good size crystals to 3cm. The Galena crystals are cated with Pyrite. Old Barstow label.
- Availability
- Sold
- Locality
- Elmo mine, Lafayette Co., Wisconsin, United States
- Formula
- PbS
- Size
- SmCabinet 5x8x5cm
- Tagged
- sulfide
Heavy specimen with gray modified cubo-octahedral Galena crystals to 1cm set on dark colored crystalline Sphalerite and Galena matrix.
The Elmo mine was a MVT Pb-Zn mine in the Upper Mississippi Valley District.
- Availability
- Sold
- Locality
- Tsumeb mine, Tsumeb, Namibia
- Formula
- PbS
- Size
- SmCabinet 8x6.5x4cm
- Tagged
- sulfide
Galena crystals to 1.5cm showing etched striations. All of the crystals are corroded in some fashion.
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- Sold
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- Locality
- Black Jack mine, Galena, Jo Daviess Co., Illinois, United States
- Formula
- PbS
- Size
- Cabinet 11x10x5.5cm
- Tagged
- sulfide
This is a cool specimen. You probably won't see a good one like this from Galena, Illinois again. The crystals, though with a dull luster, are smooth, sharp and well defined. It is a spectacular ore example from this old American deposit. The only problem with it is a gash in the crystals off to the right in the photos. The matrix is solid Sphalerite. The backside is a plate composed of tiny white Dolomite crystals, Pyrite, and 3-5mm yellow Sphalerite crystals (photos). The DuFoe label states that Smithsonite and Wurtzite can also be found on this specimen. I don't see it, and I belive they mistook the nice yellow Sphalerite for Wurtzite. The label states circa 1969.
The history of this large district, which extends into Wisconsin and Iowa, dates back to 1845. Mining in this district peaked in 1916 during World War I and is said to have had the longest recorded production history in the United States. A good article on MVT deposits can be found in Rocks & Minerals, v64 n1 1989 by Rayond Lasmanis. Much of the information in this Special Edition was found in this excellent article.
