Results 71 to 80 of about 3,405 (219)
Biogenic arsenopyrite in holocene peat sediment, India
Ecotoxicology and Environmental Safety, 2003 The plant organic matter in the peat layer deposited around 6650+/-110 and 4800+/-80 years BP, during the transgressive and regressive phases of sea level changes, respectively in the dried part (playa) of the present Pulicat lagoon in Palar Basin (southeast coast of India) was studied to elucidate the biogenic pyrite generation and associated trace ...
Anjum, Farooqui, Usha, Bajpai
openaire +2 more sources
New Zealand Journal of Geology and Geophysics, Volume 68, Issue 5, Page 1120-1152, December 2025.ABSTRACT Chemically distinctive features such as high salinity, low nutrient contents, and extremes of pH can limit the development of a vegetation cover on soil‐free bare ground. This study synthesises our previous work on the geoecology of numerous chemically distinctive bare sites in the South Island and adds a temporal component within the last ...
Dave Craw, Cathy Rufaut
wiley +1 more source
Thermithiobacillus plumbiphilus AAFK—Arsenic-Resistant Bacteria Isolated from Arsenopyrite Material
Microbiology ResearchAutotrophic sulfur-oxidizing bacteria can play a key role in the metal bioleaching from low-grade sulfide-containing ores. The most commonly used bioleaching group is presented with acidophilic bacteria of the order Acidithiobacillales.
Artem Shaikin +3 more
doaj +1 more source
Leaching Kinetics of Sulfides from Refractory Gold Concentrates by Nitric Acid
Metals, 2019 The processing of refractory gold-containing concentrates by hydrometallurgical methods is becoming increasingly important due to the depletion of rich and easily extracted mineral resources, as well as due to the need to reduce harmful emissions from ...
Denis A. Rogozhnikov +4 more
doaj +1 more source
Записки Горного института, 2020 The article presents the results of the sulfide mineralization dating of the Mayskoe gold ore deposit using the Re-Os isotope system and isochron age estimation method of the main sulfide minerals: arsenopyrite, pyrite, and antimonite.
Dmitry S. Artemiev +3 more
doaj +1 more source
Geophysical Prospecting, Volume 73, Issue 9, November 2025.ABSTRACT Hydrothermal alteration plays a crucial role in the precipitation of gold and other metals, particularly within orogenic gold deposits hosted in mafic and ultramafic rocks. This alteration significantly modifies the rock matrix, leading to changes in its petrophysical properties.
Yasaman Nemati +6 more
wiley +1 more source
Water Resources Research, Volume 61, Issue 10, October 2025.Abstract The Giant Mine (1948–1999) generated 16 Mt of Au‐bearing mill tailings (2800 mg kg−1) originating from a mixture of flotation tailings (84.8 wt%), calcine residues (14.4 wt.%), and arsenic trioxide roaster waste (0.8 wt.%). A water treatment system for high As mine dewatering effluent has operated since the end of mine operations, with the ...
David M. Hilger +4 more
wiley +1 more source
Flotation characteristics of arsenopyrite
, 1982 Electrochemical methods, surface spectroscopy and flotation tests have been used to study the influence of the oxidation of arsenopyrite on its floatability with xahthate.
Vreugde, Morris Johannes Aloysius
core
Deep Underground Science and Engineering, Volume 4, Issue 3, Page 406-421, September 2025.The Fobinso granitoids are granodiorites, while the Esuajah granitoids are granites based on their mineralogical composition. The granitoids are generally enriched in LILE and LREE than HFSE, MREE, and HREE, indicating mixing with crustal sources during their evolution.
Emmanuel D. Sunkari +2 more
wiley +1 more source
Enriching auriferous flotation concentrate through selective arsenopyrite flotation
, 2021 Data source: Yes, Upon request, contact authorsAuriferous concentrate from a processing plant predominantly made up of pyrite and arsenopyriteas the main gold-bearing sulphides was subjected to selective flotation using isopropyl-N-ethylthionocarbamate ...
Skinner, W. +3 more
core