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Sphalerite: Eagle Mine, Gilman, Eagle County, Colorado.(Connoisseur's Choice)
Magazine article from: Rocks & Minerals; 9/1/2003; ; 700+ words
; ...unusually large number of good sphalerite occurrences, the Eagle mine...correspondingly large number of sphalerite specimens. Inasmuch as the...Mineral Show, two Gilman sphalerites have been chosen for this...FIGURES 1-2 OMITTED] Sphalerite is notable for its dodecahedral...
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COLORADO SPHALERITE.
Magazine article from: Rocks & Minerals; 7/1/1999; ; 700+ words
; ...Colorado boasts numerous localities where fine sphalerite specimens have been found. Sphalerite, (Zn,Fe)S, can be one of the more...from numerous localities worldwide. Fine sphalerite specimens, for example, have been found...
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The oxidation behavior of unactivated and mechanically activated sphalerite
Magazine article from: Metallurgical and Materials Transactions; 12/1/2002; ; 700+ words
; ...mechanically activated sphalerites were examined and discussed...mechanically activated sphalerite between 400 and 873K...oxidation than unactivated sphalerite. The different oxidation...mechanically activated sphalerites. The state of mechanically...10] So unactivated sphalerite transforms ...
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Effect of aging conditions on the leaching of mechanically activated pyrite and sphalerite
Magazine article from: Metallurgical and Materials Transactions; 10/1/2003; ; 700+ words
; ...mechanically activated sphalerites aged either in air...content of pyrite and sphalerite mechanically activated...activated pyrite and sphalerite on the leaching behaviors...activated pyrites and sphalerites using X-ray diffraction...activation of pyrite and sphalerite are also discussed...
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High-resolution XANES S [L.sub.3,2] edge spectra collected from a series of iron-bearing sphalerite(Zn,Fe)S minerals (1).(X-ray Absorption Near Edge Structure)(Report)
Magazine article from: Canadian Journal of Chemistry; 10/1/2007; ; 700+ words
; ...been collected from a series of high-quality sphalerite samples. Each of the sphalerite samples examined has a characteristic iron...edge spectra collected from synthetic ZnS sphalerite. The theoretical and experimental data provide...
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A 1946 Find of Gem Sphalerite Crystals at the Balmat Zinc Mine, St. Lawrence County, New York.
Magazine article from: Rocks & Minerals; 11/1/1998; ; 700+ words
; ...were found. Here we will describe gem sphalerite crystals more than fifty years after...some of the district's subsequent sphalerite finds that have not been recorded in...5 to 1 meter deep, containing amber sphalerite crystals to 2.5 cm long. Not wanting...
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Examination of the proposition that Cu(II) can be required for charge neutrality in a sulfide lattice--Cu in tetrahedrites and sphalerite (1).(Report)
Magazine article from: Canadian Journal of Chemistry; 10/1/2007; ; 700+ words
; ...edge spectra of relatively pure natural sphalerite treated with mildly acidic aqueous cupric...atoms in the outermost layer of the sphalerite and to O atoms in chemisorbed water...and O at the surface of the treated sphalerite. Key words: tetrahedrite, sphalerite...
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Effect of microwave treatment on the flotation and magnetic separation properties of pyrite, chalcopyrite, galena and sphalerite
Magazine article from: Minerals & Metallurgical Processing; 8/1/2007; ; 700+ words
; ...pyrite, chalcopyrite, galena and sphalerite, were studied. Pure mineral samples...700 to 900C, while the temperature of sphalerite reached only ~130C. The floatability...was no change in the floatability of sphalerite. The magnetic properties of pyrite...
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Galena, sphalerite and associated minerals from the Tri-State district, Kansas, Missouri and Oklahoma.(Brief article)
Magazine article from: The Mineralogical Record; 5/1/2008; ; 700+ words
; ...The district became famous for spectacular examples of calcite (in crystals measuring up to 5 feet long), galena and sphalerite. More than 60 different minerals have been found in the district. Cheap foreign sources of lead and zinc coupled with an...
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Research by W. Gottesmann and colleagues in mineralogy provides new insights.
Newspaper article from: China Weekly News; 6/2/2009; 700+ words
; ...assemblages of rhodochrosite - sphalerite - pyrite and bustamite - sphalerite. The sphalerites show a wide range of chemical...0.32 wt%). In Stage 1 sphalerites (from the jacobsite-type sphalerite ore through Mn-magnetite...
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sphalerite
Book article from: The Columbia Encyclopedia, Sixth Edition
sphalerite , mineral composed of zinc sulfide, usually containing some iron and...being brown, red, black, or green. The most important source of zinc , sphalerite is a widely distributed mineral that commonly occurs in association with...
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lead–zinc deposits
Book article from: The Oxford Companion to the Earth
...sulphides of lead and zinc (galena and sphalerite) are important ore minerals that are...occur with those of copper. Galena and sphalerite are also commonly found in skarn (contact...comprised of fine layers of galena and sphalerite, together with pyrite, pyrrhotite...
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stannite
Book article from: A Dictionary of Earth Sciences
...massive ; occurs in hydrothermal tin- ore deposits and in association with cassiterite , chalcopyrite , and wolframite , also in stanniferous sphalerite – galena ores, and associated with sphalerite, pyrrhotite , and galena.
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massive sulphide deposits
Book article from: The Oxford Companion to the Earth
...minerals such as pyrite (FeS 2 ), chalcopyrite (FeCuS 2 ), sphalerite (ZnS), and galena (PbS) that form massive sulphide deposits...chalcopyrite) is overlain by more zinc- and lead-rich sulphides (sphalerite and galena) and is underlain by an alteration zone containing...
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black smokers and white smokers
Book article from: The Oxford Companion to the Earth
...The minerals forming the vents are primarily pyrite and sphalerite (ZnS). The fluids have elevated concentrations of zinc...This reaction causes the pH to decrease and dissolve the sphalerite. The white smokers thus represent secondary fluids that are...
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