Results 151 to 160 of about 45,354 (192)
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Journal of Crystal Growth, 1970
Abstract Natural galena whiskers have been observed in the hydrothermal polymetal deposit of “Mogilata”, Madan ore district, Bulgaria. Using optical goniometric and X-ray techniques there have been determined [100] and [110] whiskers, as well as different kinked whiskers connected with the change of the growth direction.
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Abstract Natural galena whiskers have been observed in the hydrothermal polymetal deposit of “Mogilata”, Madan ore district, Bulgaria. Using optical goniometric and X-ray techniques there have been determined [100] and [110] whiskers, as well as different kinked whiskers connected with the change of the growth direction.
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The photoelectrochemistry of galena
International Journal of Mineral Processing, 1994Abstract The photoresponse of galena to chopped illumination has been studied to elucidate the surface oxidation of this mineral relevant to flotation. The results substantiated previous findings that sulfur remains in the mineral lattice during the initial stages of oxidation.
P.E. Richardson +3 more
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Nature, 1951
RECENTLY, Ramachandran and Wooster1 have obtained the elastic constants of galena, among other substances, from measurements on diffuse reflexion of X-rays, and reported disagreement with the values given earlier by one of us2. Ramachandran has also directed our attention to this in private communications.
S. BHAGAVANTAM, T. SESHAGIRI RAO
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RECENTLY, Ramachandran and Wooster1 have obtained the elastic constants of galena, among other substances, from measurements on diffuse reflexion of X-rays, and reported disagreement with the values given earlier by one of us2. Ramachandran has also directed our attention to this in private communications.
S. BHAGAVANTAM, T. SESHAGIRI RAO
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IEEE Aerospace and Electronic Systems Magazine, 1988
The author reminisces about the early days of radio. He describes the first radio sets and his entry into commercial radio in the 1920s. He discusses his work at GE, RCA, and Brunswich Balke Collender during the 1920s and military research he as involved in during the 1930s. >
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The author reminisces about the early days of radio. He describes the first radio sets and his entry into commercial radio in the 1920s. He discusses his work at GE, RCA, and Brunswich Balke Collender during the 1920s and military research he as involved in during the 1930s. >
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Galena in pyrometasomatic deposits
Economic Geology, 1958"Galena is uncommon in pyrometasomatic deposits but does occur in Precambrian sulfide deposits of this type in central Sweden, in what were almost pure carbonate rocks. Associated minerals are in one deposit andradite and fluorite, but mostly magnesium-fluosilicates with tremolite or actinolite.
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2012
To complement the data, on the aqueous oxidation of sulphide minerals, that is, treatment of sulphides in aqueous solution at elevated temperatures under oxygen pressure, a study was undertaken of the aqueous oxidation of galena in sodium hydroxide solution.
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To complement the data, on the aqueous oxidation of sulphide minerals, that is, treatment of sulphides in aqueous solution at elevated temperatures under oxygen pressure, a study was undertaken of the aqueous oxidation of galena in sodium hydroxide solution.
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