Mineralogical hosts of platinum group elements (PGE) and rhenium in the magmatic Ni-Fe-Cu sulfide deposits of the Ivrea Verbano Zone (Italy): An electron microprobe study

2014 ◽  
Vol 191 (2) ◽  
pp. 169-187 ◽  
Author(s):  
Federica Zaccarini ◽  
Giorgio Garuti ◽  
Marco L. Fiorentini ◽  
Marek Locmelis ◽  
Peter Kollegger ◽  
...  
Keyword(s):  
Electron Microprobe ◽  
Platinum Group Elements ◽  
Sulfide Deposits ◽  
Platinum Group

scholarly journals Re Sulfides from Zhelos and Tokty-Oi Intrusions (East Sayan, Russia)

Minerals ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 479 ◽  
Author(s):  
Tatiana Kolotilina ◽  
Aleksey Mekhonoshin ◽  
Dmitriy Orsoev
Keyword(s):  
General Formula ◽  
Electron Microprobe ◽  
Platinum Group Elements ◽  
Metal Ratio ◽  
Rich Liquid ◽  
Mineral Compositions ◽  
Break Up ◽  
Platinum Group

Re sulfides were discovered in Cu–Ni–platinum-group elements (PGE) ores of the Zhelos and Tokty-Oi intrusions. These intrusions can be considered as products of the mantle superplume responsible for Rodinia’s break-up. The mineral compositions were determined in situ in polished samples. Electron microprobe analyses were mostly consistent with a general formula of (Cu,Fe,Mo,Os,Re)5S8, (Cu,Fe,Mo,Os,Re)4S7, and (Cu,Fe,Mo,Re)S2. One of the major features of Re sulfide from the Zhelos intrusion is its high osmium content. The ΣMe/S ratio for a part of our data is consistent with that of the tarkianite. Re sulfides from the Tokty-Oi have a ΣMe/S ratio similar to those in rheniite or dzeskazganite, but differ from them by the presence of Fe and Cu and the metal-to-metal ratio. The localization of the Re sulfide within the chalcopyrite suggests its crystallization from the residual Cu-rich liquid.

Platinum-group elements and gold in the komatiite-hosted Fe-Ni-Cu sulfide deposits at Kambalda, Western Australia

1986 ◽  
Vol 81 (5) ◽  
pp. 1226-1235 ◽  
Author(s):  
A. Cowden ◽  
M. J. Donaldson ◽  
Anthony J. Naldrett ◽  
I. H. Campbell
Keyword(s):  
Western Australia ◽  
Platinum Group Elements ◽  
Sulfide Deposits ◽  
Platinum Group

New data on platinum group elements in sulfide deposits of the Southern Urals

2015 ◽  
Vol 464 (1) ◽  
pp. 898-902 ◽  
Author(s):  
S. G. Kovalev ◽  
V. N. Puchkov ◽  
D. N. Salikhov
Keyword(s):  
Southern Urals ◽  
Platinum Group Elements ◽  
The Southern Urals ◽  
Sulfide Deposits ◽  
Platinum Group

Phases in the Ni–Sb–As system which occur in the Bon Accord oxide body, Barberton greenstone belt, South Africa

2016 ◽  
Vol 80 (1) ◽  
pp. 187-198 ◽  
Author(s):  
M. Tredoux ◽  
F. Zaccarini ◽  
G. Garuti ◽  
D. E. Miller
Keyword(s):  
South Africa ◽  
Electron Microprobe ◽  
Greenstone Belt ◽  
Microprobe Analysis ◽  
Electron Microprobe Analysis ◽  
Platinum Group Elements ◽  
High Magnification ◽  
Barberton Greenstone Belt ◽  
Grain Sizes ◽  
Platinum Group

AbstractAn oxide-silicate occurrence, containing >40 wt.% NiO whole rock and showing enrichment in the platinum-group elements and antimony, was investigated at high magnification. Many phases with grain sizes generally <100 μm were observed; electron microprobe analysis indicated that, although some of these are known minerals in Ni–Sb–As space (such as breithauptite and orcelite), most of them cluster around the following compositions: Ni3Sb, Ni3(Sb,As), Ni3As, Ni5(Sb,As)2, Ni7(Sb,As)3 and Ni11(Sb,As)8. Such phases have been observed in synthetic systems, but up to now not in nature. The data reported here therefore probably represent the compositions of new minerals.

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