Mineral Specimen and Product Inventory Search
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- Highland Bell mine, Beaverdell, British Columbia, Canada
- Formula
- Ag3SbS3
- Size
- 9.5 x 5.5 x 8 cm - Cabinet
- Tagged
- Ore Minerals
Large heavy Silver ore specimen rich with dark silver-black massive Pyrargyrite (Ruby Silver) with deep red internal color associated with Galena, Sphalerite, and Pyrite. The old label with this specimen mentions that this is a piece of high-grade ore.
In the Mineralogical Record's article on the Highland Bell Mine (20-6,p441) the silver lodes occur in brecciated Quartz veins in a mineralized zone approximately 6.4km E-W that is interrupted by numerous offset faults.
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- Deer Horn mine, Cobalt dist., Ontario, Canada
- Formula
- Ag
- Size
- 7 x 4 x 1.5 cm - Sm Cabinet
- Tagged
- Ore Minerals
Cobalt district ores occur in distinct mineral assemblages as outlined by William Petruk in the 1971 publication "The Silver-Arsenides of the Cobalt-Gowganda Region, Ontario". This specimen fits well in group 2 of Petruk's which contain high Silver and Allargentum. It is sawed and polished on one side. The Silver is easily seen in matrix as well as the brassy luster of the Nickeline and Breithauptite.
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- Silverfields mine, Cobalt dist., Ontario, Canada
- Formula
- CoAs3-x
- Size
- 6 x 3.5 x 3 cm - Sm Cabinet
- Tagged
- Ore Minerals
Of all the Cobalt specimens in this Special Edition this one exemplifies the nature of the Cobalt style mineralization. Cobalt, a large Silver deposit had significant native Silver zones. Some of the veins were so large they termed one of them the "Silver Sidewalk". This specimen shows native Silver throughout the matrix with Stephanite and silvery Skutterrudite. Other possible associates include Stromeyerite and Chalcocite. This specimen and the other ore slabs in this Special Edition are most likely from the large research project performed on this deposit in the 1960's.
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- W. Fork Mine, Reynolds Co., Missouri, United States
- Formula
- ZnS
- Size
- 8.5 x 5 x 6 cm - Sm Cabinet
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- Ore Minerals
Dark lustrous brown Sphalerite crystals to 3mm totally covering lumpy colloform growths of brassy Pyrite. Neat specimen!
The W. Fork Mine is located in the SE lead-district in Missouri and is also a Mississippi Valley Type deposit in the Viburnum Trend. According to a paper on the W. Fork Mine the presence of rapidly deposited, collorform ZnS and FeS is an indicator that the ore fluids which deposited the sulfides in the central zone were more saturated with respect to metal sulfides (email us for link to abstract if interested).
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- Terlingua dist., Brewster Co., Texas, United States
- Formula
- Hg2OCl
- Size
- 7 x 5 x 2.5 cm - Sm Cabinet
- Tagged
- Ore Minerals
Mercury has not been mined in the USA since 1992 when the McDermitt mine in Nevada closed. It is now only produced as a by-product from gold-silver mines. Nonetheless, the USA is the leading exporter of mercury since it is still produced through secondary recovery programs and recycling. A 76 pound mercury "flask" averaged $550-650 in 2008 (USGS). At one time the USA had many mines namely in California. Terlingua, Texas had producing mercury mines. Terlinguaite, like this specimen, was a chief ore at Terlingua. This is an old Carleton Davis specimen with tag.
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- Sierra Maestra, Oriente Province, Cuba
- Formula
- (Na,Ca,K,Ba,Sr)1-x(Mn,Mg,Al)6O12·3-4H2O
- Size
- 6.5 x 4 x 7 cm - Sm Cabinet
- Tagged
- Ore Minerals
Large piece of black-brown compact Todorokite in plumose patterns with an old Ward's label that says this specimen is from the pre Castro days, which would be before approx. 1959.
We found an old 1944 USGS publication on the deposits of the Oriente Province online (email us for link if interested) with some facts about the Manganese mining in Cuba. In this paper it mentions that in 1941 the Sierra Maestra Mn district produced 75,000 to 90,000 tons of ore with 40% or more Mn and total known reserves estimated at 300,000 tons with 40% Mn.