scholarly journals Surficial geochemistry and response to volcanic-hosted massive sulphide mineralization in the Snow Lake region

1996 ◽  
Author(s):  
C A Kaszycki ◽  
E Nielsen ◽  
G Gobert
Keyword(s):  
Massive Sulphide ◽  
Sulphide Mineralization ◽  
Lake Region

Geochemical proximity indicators of massive sulphide mineralization in the Iberian Pyrite Belt and the East Pontic metallotect

1983 ◽  
Vol 18 (S2) ◽  
Author(s):  
P. M�ller ◽  
M.A. Dieterle ◽  
P. Dulski ◽  
K. Germann ◽  
H.-J. Schneider ◽  
...  
Keyword(s):  
Iberian Pyrite Belt ◽  
Massive Sulphide ◽  
Sulphide Mineralization

Lithogeochemistry of jasper and jasperoid around the sao domingos massive sulphide mineralization in the pyrite belt, Southern Portugal

1988 ◽  
Vol 70 (1-2) ◽  
pp. 136
Author(s):  
Jaap Oostindier ◽  
Simon P. Vriend ◽  
Vladimir Den Baars ◽  
Jan H. Akkerman
Keyword(s):  
Massive Sulphide ◽  
Sulphide Mineralization ◽  
Southern Portugal

Enigmatic massive sulphide mineralization in the High Arctic Large Igneous Province, Nunavut, Canada

2019 ◽  
Vol 56 (7) ◽  
pp. 790-801 ◽  
Author(s):  
Derek H.C. Wilton ◽  
Benoit M. Saumur ◽  
Adrian Gordon ◽  
Marie-Claude Williamson
Keyword(s):  
Mineral Exploration ◽  
High Arctic ◽  
High Heat ◽  
Massive Sulphide ◽  
Large Igneous Province ◽  
Sulphur Isotope ◽  
Sulphide Mineralization ◽  
Sulphide Minerals ◽  
Igneous Province ◽  
Axel Heiberg Island

Modern mineral exploration strategies should take into account nontraditional metallogenic models for a given geological environment. Here we document the first detailed study of a massive sulphide showing associated with the High Arctic Large Igneous Province (HALIP) and Sverdrup Basin and in fact, only the second example of mineralization described from Axel Heiberg Island, Queen Elizabeth Islands, Canadian Arctic Archipelago. The Between Lake showing (western Axel Heiberg Island) is a small massive sulphide occurrence within scree/talus below a large ridge of gabbro. It was originally described by explorationists as an orthomagmatic sulphide occurrence hosted within a dioritic dyke. New petrographic and mineralogical analyses indicate that the showing consists predominantly of pyrrhotite with lesser pyrite, trace chalcopyrite, and rare sphalerite. No Ni- or Pb-bearing sulphide minerals were detected. Geochemically, the showing contains some Co and Cu, rare Zn, and generally very low Ni contents (<9 ppm). Sulphur isotope ratios of sulphide minerals range from +3.6 to + 6.6‰, somewhat heavier than expected for magmatic-derived S but isotopically lighter than S associated with local evaporite diapirs (+5.8‰ to +12.2‰). Orthomagmatic sulphides hosted in the diorite typically exhibit even lighter isotopic ratios of –3.9‰ to –1.00‰. The data are consistent with potential mafic–siliciclastic volcanogenic massive sulphide mineralization, or the like, the first documented in the HALIP. High heat flow associated with extensive HALIP magmatism was likely the driving force for such mineralization. Mineral prospectivity in Canada’s High Arctic had been predicated upon the potential presence of magmatic Ni – Cu – platinum group element sulphide mineralization. Rather than negating this potential, our findings provide evidence for additional metallogenic potential for this region of Nunavut.

Geological setting, U–Pb geochronology, and radiogenic isotopic characteristics of the Permo-Triassic Kutcho Assemblage, north-central British Columbia

1997 ◽  
Vol 34 (10) ◽  
pp. 1310-1324 ◽  
Author(s):  
Fiona C. Childe ◽  
John F.H. Thompson
Keyword(s):  
Hanging Wall ◽  
Volcanic Rocks ◽  
Isotopic Signature ◽  
Massive Sulphide ◽  
Pyroclastic Flows ◽  
Sulphide Mineralization ◽  
Isotopic Signatures ◽  
Arc Magmas ◽  
Volcanogenic Massive Sulphide ◽  
Mass Flows

The Kutcho Assemblage is a latest Permian to Early Triassic volcano-sedimentary sequence within the fault-bounded King Salmon Allochthon. Volcanic and volcaniclastic rocks consist of massive to pillowed flows and tuffs of basaltic to basaltic andesitic composition, as well as flows, mass flows, and pyroclastic flows of rhyodacitic to rhyolitic composition. The volcanic sequence is intruded by gabbro, diorite, trondhjemite, and quartz–plagioclase porphyry. Volcanic and intrusive rocks have tholeiitic magmatic affinities, with die exception of the gabbro sills and dykes, which are chemically similar to alkaline arc magmas. Cu–Zn volcanogenic massive sulphide mineralization at die Kutcho Creek deposit is hosted by rhyolite mass flows near me top of the Kutcho Assemblage. Rhyolite mass flows from the hanging wall and footwall to mineralization have U–Pb ages of 242 ± 1 and [Formula: see text], respectively, whereas a quartz–plagioclase porphyritic intrusion to the south of the mineralization has a U–Pb age of 244 ± 6 Ma. The dates determined in this study constrain a previously unknown age for massive sulphide mineralization in the Canadian Cordillera. Furthermore, the age of the Kutcho Assemblage and the primitive Pb isotopic signature of its contained syngenetic mineralization (207Pb/206Pb = 0.83988–0.84112 and 208Pb/206Pb = 2.0517–2.0556) are inconsistent with formation as part of the adjacent Stikine or Quesnel terranes. Primitive Nd isotopic signatures (εNd(initial) = +7.5 to +9.1) and trace and rare earth element chemistry indicate that volcanic rocks of the Kutcho Assemblage, related intrusions, and volcanogenic massive sulphide mineralization formed in an intraoceanic island arc environment, probably directly on oceanic crustal basement. Gabbro sills and dykes, which are interpreted to be slightly younger than volcanic rocks of the Kutcho Assemblage, appear to have formed in response to a change in the tectonic regime, perhaps as a result of a collisional event.

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