Results 171 to 180 of about 8,700 (211)

Metals in water used by artisanal and small-scale gold miners for gold-mercury amalgamation in Western Kenya. [PDF]

Environ Health
Raoilimanantsoa N, Oremo J, Akello O, Majanga W, Gunter S, Ayodo G, Torkmahalleh MA, Dorevitch S.   +7 more
europepmc   +1 more source

Abiotic and biotic-controlled nanomaterial formation pathways within the Earth's nanomaterial cycle. [PDF]

Commun Earth Environ
Schindler M, Xu J, Hochella MF.
europepmc   +1 more source

Flotation separation of pyrite and carbonate minerals from a carlin-type gold deposit in Guizhou by a new combined collector and its adsorption mechanism. [PDF]

Sci Rep
Zhu Z, Nie G, Deng Q, Tuo B, Qiu T.
europepmc   +1 more source

Chemical oxidation of arsenopyrite by strong oxidizing agents: For oxidative pretreatment of refractory arsenopyritic gold ores

Acta Geodynamica et Geomaterialia
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Release of arsenic from arsenopyrite dissolution.

, 2008
Cama, Jordi, Asta, M. P., Ayora, Carlos, De Giudicci, G., Acero, Patricia, Ricci, P. C.   +5 more
openaire   +1 more source

Behaviour of phyrrotite, arsenopyrite and stibnite to biooxidation

, 1998
Abbruzzese C, Ubaldini S, VEGLIO', FRANCESCO   +2 more
openaire   +3 more sources

Gold on arsenopyrite: Evidence for electrochemical deposition.

, 1997
Moeller, P., Sastri, C., Kluckner, M., Rhede, D., Ortner, H.   +4 more
openaire   +2 more sources

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Arsenopyrite oxidation – A review

Applied Geochemistry, 2009
Abstract Arsenopyrite (FeAsS) is the most common As-bearing sulfide mineral. Under oxidising conditions, such as those in mine waste systems, it breaks down to release acids of As and S into the environment, resulting in acid mine drainage with high concentrations of dissolved As.
Corkhill, C. L., Vaughan, D. J.
openaire   +3 more sources

Oxidation of arsenopyrite (FeAsS) in acid Part I: Reactivity of arsenopyrite

Journal of Applied Electrochemistry, 1996
The oxidation reactivity of arsenopyrite FeAsS in dilute acid determines the recovery of gold from arsenopyritic gold ores by slurry electrolysis. Stoichiometric,sulfur- and arsenic- deficient arsenopyrite have practically the same oxidation rate. Arsenopyrite is covered with a metal deficient sulfide layer which appears to determine the restpotential ...
P. G. Fernandez, H. G. Linge, M. W. Wadsley   +2 more
openaire   +1 more source

Thermodynamics of roasting arsenopyrite

Metallurgical Transactions B, 1983
Existing thermodynamic data for the Fe-As-S-0 system were evaluted and predominance area diagrams for that system were constructed at 798 and 973 K. Isopleths for the As/S and As/O atomic ratios in the vapor phase have been added to the diagrams by solving the complex equilibria.
N. Chakraborti, D. C. Lynch
openaire   +1 more source