Results 111 to 120 of about 19,501 (234)
Origin and distribution of mineral species in limestone caves [PDF]
, 1971 More than 80 mineral species are known to result from secondary chemical reactions in solutional limestone caverns. These minerals are transitional and end-products of carbonate wall rock interactions with ground water and organic residue.
Broughton, Paul L.
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Volatile metal deposits on lunar soils: Relation to volcanism [PDF]
Parallel leaching and volatilization experiments conducted on lunar samples and similar experiments on sphalerite do not supply the information needed to resolve the question of the chemical nature of pb 204, Zn, Bi and Tl deposits on lunar soil surfaces.
Allen, R. O., Jr. +2 more
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Kuangchan zonghe liyongBased on fluorescence spectrum analysis and chemical multi-element analysis, through the process mineralogy study of a refractory lead-zinc mine in Hebei, the mineral composition, structure, main mineral embedding characteristics of the ore and the ...
Guanglin QIN
doaj +1 more source
TECHNOLOGICAL AND ENVIRONMENTAL ASPECTS OF UTILIZATION OF HYDROLYSIC SULFURIC ACID OF PRODUCTION OF PIGMENT TITANIUM DIOXIDE [PDF]
, 2018 Ukraine is one of the five countries producing strategic titanium raw materials. Testing of titanium objects from the standpoint of complexity will ensure their rational development and significantly increase profitability.
Derimova, Alona +3 more
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Infrared spectra of some sulfides and their analogs of binary composition in the long-wave region [PDF]
The far infrared spectra (500-60/cm) of some simple sulfides and their analogs were studied. In all, 22 minerals with different structure types were investigated, out of which 14 are sulfides (galena, alabandite, pyrrhotite, sphalerite, wurtzite ...
Povarennykh, A. S. +3 more
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Regional geochemical and geophysical surveys in the Berwyn Dome and adjacent areas, north Wales [PDF]
, 1984 This report describes stream sediment and gravity surveys carried out across the Berwyn Dome and adjacent areas. The gravity survey confirmed the presence of a broad regional Bouguer anomaly low in the central part of the Dome, on which is ...
Cooper, D.C., Cornwell, J.D., Rollin, K.
core
Colour of SphaleriteThe colour of sphalerite is white nearly colourless when pure, whereas sphalerite with high Fe content is almost black in colour. Besides a minor amount of cadmium and manganese is contained in addition to iron. The present writer has carried out some quantitative studies on the colour of sphalerite, especially in connection between the chemical ...
openaire
Imaging galvanic couples in complex sulphide assemblages using multi-modal elemental and photocurrent microscopy. [PDF]
Sci RepLaird JS, Macrae CM, Ryan C.
europepmc +1 more source
Temperature effect on seawater leaching of Pb, Zn, and F from waste rock at Ivittuut cryolite mine in South Greenland. [PDF]
Environ Sci Pollut Res IntJeremiassen NEO +6 more
europepmc +1 more source