Results 51 to 60 of about 13,713 (230)
Boletín Geológico, 1990 La región objeto de este estudio se localiza al extremo sur central del Macizo de Santander, cordillera Oriental de Colombia. En una secuencia de sedimentitas del Cretáceo inferior y en posición concordante con la dirección de los estratos, se encuentra
Hernando Mendoza Forero
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Mineralogy of Historic Scheelite Mine Tailings at Glenorchy, Otago, New Zealand
New Zealand Journal of Geology and Geophysics, Volume 69, Issue 2, June 2026.Otago Schist orogenic mineral deposits with scheelite and gold in the Glenorchy area are mineralogically and geochemically similar to, but structurally different from, those at the active Macraes gold mine in East Otago. Glenorchy veins were mined for scheelite up to 1970s, and an abandoned processing battery site at Glenorchy is now being managed for ...
Dave Craw +2 more
wiley +1 more source
Lichens of abandoned zinc-lead mines
Acta Mycologica, 2013 A list of lichens from areas of zinc-lead ores in Southern Poland and a review of the characteristic lichen biota of these sites is provided. In spite of the devastated and heavy metal contaminated environment, a highly diverse epigeic and epilithic ...
Urszula Bielczyk +2 more
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Phanerozoic veins of galena in the Åland rapakivi area, southwestern Finland [PDF]
Bulletin of the Geological Society of Finland, 1979 Some minor galena mineralizations are in part associated with clastic dykes of Cambrian sandstone in the Aland rapakivi area. Galena also occurs disseminated in greisen-type mineralizations.
L. Bergman, B. Lindberg
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Acta Geologica Sinica - English Edition, Volume 100, Issue 3, Page 795-813, June 2026.The key factors making the monzogranitic porphyry fertile for mineralization, including its high Cl, S, and H2O contents, high oxidation state, significant fluid exsolution, and multiple recharges of deep‐seated mafic magma, were all critical for the formation of the Wunugetushan porphyry Cu‐Mo deposit. ABSTRACT The Wunugetushan (Wushan) porphyry Cu–Mo
Genyuan JI +4 more
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Revista Colombiana de Biotecnología, 2011 Adaptation of a strain Acidithiobacillus ferrooxidans compatible on concentrates of chalcopyrite (CuFeS2), sphalerite (ZnS) and galena (PbS) RESUMEN En este estudio se evaluó la adaptación de una cepa compatible con Acidithiobacillus ferrooxidans a ...
E Mejía +4 more
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Dual Role of Fe2+ in the Galena Flotation and Influence on Selective Separation
Adsorption Science & Technology, 2023 Fe ions, as one of the unavoidable metal ions, are present in flotation pulp as ferric and ferrous species, and the effect of ferric species on the flotation behavior of sulfide minerals has been widely discussed in the above literatures.
Bo Yang +3 more
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Journal of the American Geriatrics Society, Volume 74, Issue 6, Page 1548-1557, June 2026.ABSTRACT Background The impact of vitamin D on fall incidence remains controversial. We studied the effect of 5 years of vitamin D3 supplementation on the risk of falls in a double‐blind, placebo‐controlled randomized trial with generally healthy, community‐dwelling men and women in Finland.
Toni Rikkonen +9 more
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Floatation separation of galena, sphalerite, and pyrrhotite by combined depressant CCSL
工程科学学报, 2017 The flotation separation of galena, sphalerite, and pyrrhotite was investigated with CCSL as a depressant. Flotation test results show that galena and sphalerite can float but pyrrhotite can barely float with CCSL as a depressant.
BAI An-ping, SONG Yong-sheng, ZHOU He
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Geological Journal, Volume 61, Issue 5, Page 1291-1309, May 2026.The Pangkaimen Au–Ag deposits belong to the epithermal Au deposits, which are of great significance for guiding the research and development of this type of gold deposit. Metallogenic model diagram of Pangkaimen Au–Ag deposit. ABSTRACT The gold (Au) metallogenic belt in the northern Great Xing'an Range is characterised by the wide occurrence of the ...
Sheng Lu +8 more
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