SPECIATION FEATURES OF GOLD IN ORES AND MINERALS OF THE NATALKINSKOE DEPOSIT (NORTH-EAST RUSSIA)
Геодинамика и тектонофизика, 2022 The distribution and speciation features of gold in ores and minerals of the Natalkinskoe gold deposit (North-East Russia) are studied using light microscopy (LM), scanning electron microscopy with energy dispersive X-ray spectrometry (SEM-EDX), X-ray ...
R. G. Kravtsova +4 more
doaj +1 more source
Arsenic-bearing phases in South Andean volcanic ashes: Implications for As mobility in aquatic environments [PDF]
, 2015 Three samples of volcanic ashes collected after eruptions of the volcanos Hudson in 1991, Chaitén in 2008 and Puyehue in 2011 were analyzed in order to define the solid speciation of arsenic and the dynamics of its release to the aqueous phase.
Bia, Gonzalo Luis +3 more
core +1 more source
New data on the mineralogy of the gold-sulfide ore type of the Karalveem deposit, Chukotka
Руды и металлы, 2022 In this paper, we present the results of a mineralogical study of the ores of the Karalveem deposit in the northeast of Russia (Central and Ruslovy areas). Gold mineralization is characterized by two types of ores: gold-quartz-arsenopyrite (quartz veins
Ruslan A. Maksarov +4 more
doaj +1 more source
Contamination of surface waters by mining wastes in the Milluni Valley (Cordillera Real, Bolivia): Mineralogical and hydrological influences [PDF]
, 2008 This study is one of very few dealing with mining waste contamination in high altitude, tropical-latitude areas exploited during the last century. Geochemical, mineralogical and hydrological characterizations of potentially harmful elements (PHEs) in ...
Isaure, Marie-Pierre +3 more
core +3 more sources
Crystals, 2023 The behaviour and stability of arsenopyrite largely depend on its crystal structure, but studies of crystallography and structural defects are scarce. For clarification, we investigated a series of natural arsenopyrite crystals from the polymetallic Pb ...
Ivana Jelić +5 more
doaj +1 more source
Jarosite versus Soluble Iron-Sulfate Formation and Their Role in Acid Mine Drainage Formation at the Pan de Azúcar Mine Tailings (Zn-Pb-Ag), NW Argentina [PDF]
, 2014 Secondary jarosite and water-soluble iron-sulfate minerals control the composition of acid mine waters formed by the oxidation of sulfide in tailings impoundments at the (Zn-Pb-Ag) Pan de Azúcar mine located in the Pozuelos Lagoon Basin (semi-arid ...
Alicia Kirschbaum +5 more
core +3 more sources
Mobility of antimony, arsenic and lead at a former mine, Glendinning, Scotland [PDF]
, 2015 Elevated concentrations of antimony (Sb), arsenic (As) and lead (Pb) in upland organic-rich soils have resulted from past Sb mining activities at Glendinning, southern Scotland. Transfer of these elements into soil porewaters was linked to the production
Farmer, John G. +3 more
core +1 more source
Role of Ag+ in the Bioleaching of Arsenopyrite by Acidithiobacillus ferrooxidans
Metals, 2020 Arsenopyrite (FeAsS) is often associated with gold, but pre-treatment is necessary prior to gold leaching, mainly due to the gold encapsulation in the matrix of FeAsS. Bio-oxidation is attractive and promising, largely due to its simplicity, low cost and
Yan Zhang, Qian Li, Xiaoliang Liu
doaj +1 more source
Investigation of gold content in the bio-oxidation process [PDF]
E3S Web of Conferences, 2023 In this study, the process of bio-oxidation of flotation concentrate from the flotation of gold-sulfide ores and sorption cyanidation of the bio-oxidation product were analyzed, and the content of dispersed gold in pyrite, arsenopyrite, and carbonaceous ...
Nurmurodov Tulkin +5 more
doaj +1 more source
Reflectivity and microhardness of sulfide minerals as genetic information source (case study: pyrite and arsenopyrite) [PDF]
, 2005 Reflectivity and microhardness of pyrite and arsenopyrite of black shale gold-ore deposits in Chertovo Koryto (Patom upland) were studied. It was found that sulfides of different generations are characterized by different values of above-mentioned ...
Sinkina, Ekaterina Andreevna +3 more
core +2 more sources