Results 21 to 30 of about 7,082 (274)
Yankuang ceshi, 2018 A systematic study of the phase composition and element occurrence characteristics of tellurides in tellurium-bearing gold deposits will be helpful for the genesis understanding of gold deposits of this type and for prospecting exploration. Tellurides in
LI Zeng-sheng +5 more
doaj +1 more source
PRECIOUS METAL MINERALOGY OF THE MURTYKTY GOLD DEPOSIT, SOUTH URALS [PDF]
Минералогия, 2019 Ore mineralogy of the Murtykty gold deposit is presented in the paper and main attention is paid to the mode of occurrence of precious metals. Ores are pyrite-bearing quartz-chlorite (±sericite, ±carbonate of the dolomite-ankerite series) metasomatites ...
Yu.A. Paduchina +7 more
doaj +1 more source
Руды и металлы, 2023 The study of the spatiotemporal relationships of metasomatites and ores of various zones of the epithermal Au-Ag deposit Svetloe (Khabarovsk Region) using a traditional mineralogical and petrographic approach made it possible to establish several stages
Levochskaya D. V. +6 more
doaj +1 more source
The importance of mineralogical knowledge in the sustainability of artisanal gold mining: a mid-south Peru case [PDF]
, 2019 Mineralogy and gold processing techniques from several mining areas of the Nazca-Ocoña gold belt, Mid-South Peru, were investigated to assess the efficiency of gold extraction methods in relation to their mineralogy.
Alfonso Abella, María Pura +7 more
core +2 more sources
Enrichment in critical metals (In-Ge) and Te-Se in epithermal deposits of the 'La Carolina' district, San Luis, Argentina [PDF]
, 2018 This study was supported by the ‘Proyecto de Ciencia y Técnica P-3-2-0414, of the National University of San Luis’ and by the Project CGL2016-76532-R from the MINECO of ...
Cepedal Hernández, María Antonia +3 more
core +2 more sources
About the ore conduits at the near-surface deposits of gold-silver ores
Известия высших учебных заведений: Геология и разведка, 2017 It is shown that at the rather numerous near-surface gold-silver ore deposits (sometimes with tellurides), developed in the East of Russia, the fractured ore conduits can be revealed.
E. M. Necrasov, L. A. Dorozhkina
doaj +1 more source
Raman scattering evidence for a cascade-like evolution of the charge-density-wave collective amplitude mode [PDF]
, 2009 The two-dimensional rare-earth tri-tellurides undergo a unidirectional charge-density-wave (CDW) transition at high temperature and, for the heaviest members of the series, a bidirectional one at low temperature.
B. Muschler +12 more
core +1 more source
Resonant Enhancement of Charge Density Wave Diffraction in the Rare-Earth Tritellurides [PDF]
, 2012 We performed resonant soft X-ray diffraction on known charge density wave (CDW) compounds, rare earth tri-tellurides. Near the $M_5$ (3d - 4f) absorption edge of rare earth ions, an intense diffraction peak is detected at a wavevector identical to that ...
Chu, J. -H. +12 more
core +2 more sources
Phase transitions in copper tellurides
Eurasian Journal of Physics and Functional Materials, 2023 This paper presents the results of model calculations of the structure of the Cu-Te system at low temperatures, as well as the results of a study of the structure and phase transitions of synthesized non-stoichiometric compounds of copper tellurides. For
N.N. Bikkulova +5 more
doaj +1 more source
THE ASSAY OF TELLURIDE ORES. [PDF]
Journal of the American Chemical Society, 1898 n ...
openaire +1 more source