Results 1 to 10 of about 719,980 (296)
China Geology, 2022 By the end of 2020, 83 silver deposits (or ore occurrences), including four super-large-scale deposits, nine large-scale deposits, 33 medium-scale deposits and 37 small-scale deposits or ore occurrences, have been proved.
Biao Jiang +14 more
exaly +3 more sources
Formation of Disperse Silver Deposits by the Electrodeposition Processes at High Overpotentials
International Journal of Electrochemical Science, 2012 In this study, electrodeposition of silver from nitrate solution at the high overpotentials was analyzed. Morphologies of silver deposits obtained at the different overpotentials and with the different electrodeposition times were examined using the ...
Nebojsa Nikolic +2 more
exaly +3 more sources
Identification of mineral associations in skarn-rare-metallic deposits in Western Uzbekistan [PDF]
E3S Web of Conferences, 2023 This article solves the applied scientific problem of identifying mineral carriers and mineral associations of platinum mineralization in the skarn-gold-rare metal Koytash and Lyangar deposits.
Ashirov M. +3 more
doaj +1 more source
地质科技通报, 2021 Sumatra Island, located on the western edge of Indonesia, is an important part of the Pacific Rim metallogenic belt, and has abundant mineral resources such as copper, gold(silver) lead and, zinc.The quantitative prediction for these mineral resources ...
Fengshun Zhao +5 more
doaj +1 more source
Gold and gold-bearing volcanogenic massive sulphide deposits of the Central Cuba
Известия высших учебных заведений: Геология и разведка, 2021 Background. Volcanogenic massive sulphide deposits (VMS) are the most important sources of Cu and Zn; they account for a large share of the world production of Pb, Ag, Au, Se, Te, Bi and Sb, as well as small amounts of many other metals. The polymetallic
D. De la Nuez Colon +1 more
doaj +1 more source
Legislative aspects at national and international level regarding the exploitation of gold-silver deposits [PDF]
MATEC Web of Conferences, 2022 In Romania, mining is a historical, traditional occupation, attested since antiquity, when the Romans came here to extract gold and other base metals from the underground mines in our mountains.
Grigorescu Paul
doaj +1 more source
Electrocrystallization of fibrous silver deposits from nitrate melts: Experiments and modeling [PDF]
Journal of Mining and Metallurgy. Section B: Metallurgy, 2003 Fibrous silver deposits have been obtained in molten nitrates on a moving cathode. Cylindrical silver cathode was lifted from the melt AgNO3-NaNO3-KNO3. It is found that the dimensions of the silver threads as well as their shape and thickness depend on ...
Murashova I.B. +4 more
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Study of the Chemical and Pb Isotope Composition in Dirhams from the Podbolotyevo Cemetery
Нижневолжский археологический вестник, 2023 A series of silver dirhams and their imitations, originating from the burials of the Podbolotyevo burial ground left by the Muroma tribe, was studied by XRF, neutron diffraction and analysis of the isotopic composition using the Pb-Pb method.
Irina A. Saprykina +4 more
doaj +1 more source
Crystals, 2021 Raman spectra of fluid inclusions in gem rubies from Yuanjiang deposit (China) within the Ailao Shan-Red River (ASRR) metamorphic belt showed the presence of compounds such as CO2, COS, CH4, H2S, and elemental sulfur (S8), accompanied by two bands at ...
Wenqing Huang +7 more
doaj +1 more source
MINERALOGY OF PRECIOUS METALS IN ORES OF THE YUBILEINOE PORPHYRY GOLD DEPOSIT (KAZAKHSTAN) [PDF]
Минералогия, 2020 Gold and silver mineralogy is studied in ores of the Yubileinoe porphyry gold deposit (Kazakhstan). Native gold is the major gold mineral. Its fineness varies from 970‰ in magnetite-hematite assemblage to 733–860‰ in pyrite-chalcopyrite assemblage ...
O.Yu. Plotinskaya
doaj +1 more source