scholarly journals Platinum Group Element (PGE) Geochemistry as a Tool to Determine Sulfide Saturation and Magma Fertility

2020 ◽  
Author(s):  
Monika Misztela ◽  
Ian Campbell
Keyword(s):  
Platinum Group Element ◽  
Group Element ◽  
Sulfide Saturation ◽  
Platinum Group ◽  
Pge Geochemistry

Platinum-group element (PGE) geochemistry of the Emeishan basalts in the Pan-Xi area, SW China

2006 ◽  
Vol 51 (7) ◽  
pp. 845-854 ◽  
Author(s):  
Hong Zhong ◽  
Weiguang Zhu ◽  
Liang Qi ◽  
Meifu Zhou ◽  
Xieyan Song ◽  
...  
Keyword(s):  
Platinum Group Element ◽  
Group Element ◽  
Sw China ◽  
Platinum Group ◽  
Pge Geochemistry

scholarly journals Contact-style magmatic sulphide mineralisation in the Labrador Trough, northern Quebec, Canada: implications for regional prospectivity

2020 ◽  
Vol 57 (7) ◽  
pp. 867-883 ◽  
Author(s):  
W.D. Smith ◽  
W.D. Maier ◽  
I. Bliss
Keyword(s):  
Platinum Group Element ◽  
Group Element ◽  
Common Source ◽  
Upper Crust ◽  
Sulphide Ores ◽  
Sulphide Mineralisation ◽  
Platinum Group ◽  
R Factors ◽  
Pge Geochemistry

The Labrador Trough in northern Quebec is currently the focus of ongoing exploration for magmatic Ni-Cu-platinum group element (PGE) sulphide ores. This geological belt hosts voluminous basaltic sills and lavas of the Montagnais Sill Complex, which are locally emplaced among sulphidic metasedimentary country rocks. The recently discovered Idefix PGE-Cu prospect represents a stack of gabbroic sills that host stratiform patchy disseminated to net-textured sulphides (0.2–0.4 g/t PGE+Au) over a thickness of ∼20 m, for up to 7 km. In addition, globular sulphides occur at the base of the sill, adjacent to the metasedimentary floor rocks. Whole-rock and PGE geochemistry indicates that the sills share a common source and that the extracted magma underwent significant fractionation before emplacement in the upper crust. To develop the PGE-enriched ores, sulphide melt saturation was attained before final emplacement, peaking at R factors of ∼10 000. Globular sulphides entrained along the base of the sill ingested crustally derived arsenic and were ultimately preserved in the advancing chilled margin.

Sulfide saturation mechanisms in gabbroic intrusions in the Nipigon Embayment

2007 ◽  
Vol 44 (8) ◽  
pp. 1203-1214
Author(s):  
Stephen A Kissin ◽  
Geoffrey J Heggie ◽  
James M Franklin ◽  
Alireza Karimzadeh Somarin
Keyword(s):  
Platinum Group Element ◽  
Country Rock ◽  
Group Element ◽  
Isotopic Data ◽  
Sulfide Saturation ◽  
Copper Nickel ◽  
Northwestern Ontario ◽  
Reef Type ◽  
Sulfur Saturation ◽  
Platinum Group

The Seagull and Kitto intrusions in the Nipigon Embayment of northwestern Ontario were studied to gain an understanding of the processes involved in sulfur saturation of the mafic to ultramafic magmas leading to the formation of platinum group element (PGE) concentrations. Profiles of sulfur, copper, nickel, gold, palladium, and platinum concentrations as a function of depth revealed that sulfur saturation occurred at the base of the Seagull intrusion. A higher grade horizon occurs well above the base of the intrusion, suggesting that a reef-type of process was significant here and possibly in the Kitto intrusion, as well. Olivine compositions indicate that, in both cases, the parental magmas were undersaturated with respect to sulfur. Sulfur, neodymium–samarium, and rubidium–strontium isotopic data suggest that assimilation of country rock and sulfide played a role, especially in the formation of basal concentrations of PGEs.

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