Results 21 to 30 of about 7,257 (220)

Kivilompolo Mo mineralization in the Peräpohja belt revisited: Trace element geochemistry and Re-Os dating of molybdenite [PDF]

Bulletin of the Geological Society of Finland, 2020
The Kivilompolo molybdenite occurrence is located in the northern part of the Peräpohja belt, within the lithodemic Ylitornio nappe complex. It is hosted within a deformed porphyritic granite belonging to the pre-orogenic 1.99 Ga Kierovaara suite.
Jukka-Pekka Ranta, Eero Hanski, Holly Stein, Matthew Goode, Timo Mäki, Atte Taivalkoski   +5 more
doaj   +1 more source

Activation of peroxymonosulfate by natural molybdenite for the degradation of atrazine [PDF]

E3S Web of Conferences, 2020
In this work, molybdenite was used as a catalyst to activate peroxymonosulfate (PMS) for atrazine (ATZ) degradation. First, the effects of molybdenite dosage (0.05-0.30 g/L), PMS dosage (0.02-0.15 mM) and the initial pH (3.0-11.0) in the aqueous solution
Lai Leiduo, Lai Bo
doaj   +1 more source

Effects of Sodium Alginate on the Flotation Separation of Molybdenite From Chalcopyrite Using Kerosene as Collector

Frontiers in Chemistry, 2020
In this paper, the effect of sodium alginate (SA) on the flotation separation of molybdenite (MoS2) from chalcopyrite using kerosene as collector was systematically investigated.
Guangsheng Zeng, Leming Ou, Wencai Zhang, Yuteng Zhu   +3 more
doaj   +1 more source

Dissecting the Re-Os molybdenite geochronometer [PDF]

Scientific Reports, 2017
AbstractRhenium and osmium isotopes have been used for decades to date the formation of molybdenite (MoS2), a common mineral in ore deposits and the world’s main source of molybdenum and rhenium. Understanding the distribution of parent 187Re and radiogenic daughter 187Os isotopes in molybdenite is critical in interpreting isotopic measurements because
Fernando Barra, Artur Deditius, Martin Reich, Matt R. Kilburn, Paul Guagliardo, Malcolm P. Roberts   +5 more
openaire   +7 more sources

The study of molybdenite types related to the ore processing plant of the Sar Cheshmeh mine

Journal of Economic Geology, 2011
Molybdenite occurs in five forms in the Sar Cheshmeh porphyry copper deposit, namely, (1)-veinlets with quartz-molybdenite, (2)-veinlets with quartz-molydenite that were filled with pyrite, (3)-veinlets with quartz-molybdenite-pyrite–chalcopyrite, (4 ...
Balandeh Aminzadeh, Jamshid Shahabpour, Mortaza Asadipour   +2 more
doaj   +1 more source

Adsorption Characteristics and Mechanism of Calcium Ions on Different Molybdenite Surfaces via Experiments and DFT Simulations

Separations, 2021
Calcium ions are common in flotation process water, and have a significant effect on the molybdenite floatability, making separation of molybdenite from other minerals more difficult.
Liqing Sun, Yijun Cao, Lin Li, Qingliang Zeng   +3 more
doaj   +1 more source

The possible existence of Hs in nature from a geochemical point of view [PDF]

, 2006
A hypothesis of the existence of a long-lived isotope 271Hs in natural molybdenites and osmirides is considered from a geochemical point of view. It is shown that the presence of Hs in these minerals can be explained only by making an additional ad hoc ...
A. D. Brandon, A. D. Smith, A. Meibom, A. Meibom, A. Narinov, A. Sobiczewski, A. V. Ivanov, A. V. Ivanov, Ch. E. Düllmann, D. L. Anderson, D. Selby, G. R. Foulger, G. Royer, H. J. Stein, H. J. Stein, H. Meier, J. G. Raith, J. M. Bird, J. Morris, J. P. Davidson, J. V. Kratz, K. A. Petrzhak, R. D. Cherry, R. Eichler, R. Gentry, R. J. Walker, R. J. Walker, S. Hofmann, S. V. Balyshev, T. V. Galashvili, V. P. Perelygin, W. M. White, Yu. Oganessian   +32 more
core   +2 more sources

EFFECT of Pb2+ on the flotation of molybdenite in the presence of sulfide ion

Results in Physics, 2019
Although Na2S doesn’t depress the flotation of molybdenite, as the most utilized depressant, its effect on the flotation of molybdenite in the case where Pb2+ is involved has not been investigated yet.
Qi Zhang, Huanyu Zhu, Bingqiao Yang, Feifei Jia, Hai Yan, Mengyuan Zeng, Hanyu Qu   +6 more
doaj   +1 more source

Comparison of isotope data obtained with Sm-Nd and Re-Os methods for minerals and rocks from the Ozernoe ore occurrence, Salla-Kuolajarvi belt

Vestnik MGTU, 2021
Sm-Nd isochrone, drawn for rock-forming and sulfide minerals from the Ozernoe ore occurrence, indicates albitite age of 1,759 ± 11 Ma. It shows synchronous formation of albitite and sulfide mineralization, and fully corresponds to the earlier defined age
Kalinin A. A. , Kaulina T. V. , Serov P. A.   +2 more
doaj   +1 more source

Anomalous supply of bioessential molybdenum in mid-Proterozoic surface environments [PDF]

, 2016
We are grateful to A. Sandison and W. Thayalon for skilled technical support, and Mike Porter and an anonymous reviewer, who helped to clarify the manuscript.Peer ...
Lindgren, Paula, Parnell, John
core   +1 more source