Results 21 to 30 of about 719,980 (296)
Silver Isotopes in Silver Suggest Phoenician Innovation in Metal Production
Applied Sciences, 2022 The current study presents Ag isotopic values of 45 silver artifacts with known Pb isotopic composition from the Southern Levant. These items originate from seven pre-coinage silver hoards, dating from the Middle Bronze Age IIC to the end of the Iron Age
Tzilla Eshel +4 more
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Fluid and metal sourcing for the native silver deposits in the Batopilas Mining District, Chihuahua, Mexico [PDF]
, 2012 textThe Batopilas Mining District was a major silver producer, with estimated historic production of more than 300 million ounces. Orebodies consist of high-grade silver in the forms of native silver, acanthite and proustite hosted dominantly in calcite
Kallstrom, Michael Joseph, M.S. in Geological Sciences
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Spearheads From Turbino Burial Ground: metal composition and production technology
Археология евразийских степей, 2022 This paper features the results of an analysis of the chemical and lead isotope composition in the bronze and silver alloys of spearheads from the Turbino burial ground, as well as the results of a trace-wear analyses.
Natalia I. Shishlina +3 more
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Известия высших учебных заведений: Геология и разведка, 2017 With the use of the methods of the inductively coupled plasma mass-spectrometry (ICP-MS) and infrared spectroscopy, the concentrations of Al, Ti, Li, Ge, B and rare earth elements, and the impurity centers containing group ОН?
O. A. Sustavov +2 more
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VERTICAL MINERAL ZONALITY OF THE SAN FERNANDO VOLCANOGENIC MASSIVE SULPHIDE DEPOSIT, CUBA
Известия высших учебных заведений: Геология и разведка, 2020 From ten to fifteen percent of the global supply of copper, zinc and lead, as well as a significant amount of silver, gold, cadmium, selenium, tin, bismuth and barium are mined from massive sulphide deposits.
D. De La Nuez Colon
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International Journal of Economic and Environment Geology, 2021 Subduction related Miocene porphyry type deposits are found in the east-west trending Chagai magmatic belt (CMB) in Pakistan's western margin, Balochistan.
Fida Murad, Abdul Ghaffar, Innayat Ullah, Abdul Shakoor Mastoi, Muhammad Tariq Zaman
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Production of silver-loaded zeolites and investigation of their antimicrobial activity [PDF]
, 2008 A thesis submitted in partial fulfilment of the requirements of the University of Wolverhampton for the degree of Doctor of PhilosophyThe production of silver-loaded zeolites either by ion exchange method or by isomorphous substitution of silver ions ...
Kwakye-Awuah, Bright
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Sonochemical deposition of magnetite on silver nanocrystals
Ultrasonics Sonochemistry, 2009 Sonochemical irradiation of iron (II) acetate aqueous solution in presence of silver nanopowder resulted in deposition of magnetite nanoparticles on silver nanocrystals, and imparted them with magnetic properties. The Ag-Fe(3)O(4) nanocomposite is well attracted to a permanent magnet, and demonstrates superparamagnetic behavior typical of nanomaterials
Nina, Perkas +4 more
openaire +2 more sources
Mints not Mines: a macroscale investigation of Roman silver coinage
Internet Archaeology, 2023 Although silver coins have been investigated through the lens of geological provenance to locate argentiferous ore deposits exploited in their production, we consider that this avenue of research may be a cul-de-sac, especially for studies that rely ...
Jonathan R Wood +2 more
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Chemogenic sediments of Mutnovsky geothermal complex (South Kamchatka)
Вестник Камчатской региональной ассоциации "Учебно-научный центр". Серия: Науки о Земле, 2021 By studying the processes taking place at the operating geothermal stations it is possible to model and understand some features of formation of minerals of geothermal origin, processes of transfer by hydrothermal solutions and concentration of some ...
Зобенько О.А. +5 more
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