Contact-style magmatic sulphide mineralisation in the Labrador Trough, northern Quebec, Canada: implications for regional prospectivity
Contact-style magmatic sulphide mineralisation in the Labrador Trough, northern Quebec, Canada: implications for regional prospectivity
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加拿大魁北克北部拉布拉多海槽的接触式岩浆硫化物矿化:对区域前景的影响
DOI:
10.1139/cjes-2019-0137
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发表时间:
2020
影响因子:
1.4
通讯作者:
Smith W
中科院分区:
文献类型:
--
作者:
Smith W
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 atRfactors 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.
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影响因子:
4.8
作者:
Z. Seat;S. Beresford;B. Grguric;Rob S. Waugh;Jon M. A. Hronsky;M. A. Mary Gee;D. Groves;C. Mathison
通讯作者:
C. Mathison
影响因子:
--
作者:
Bélinda Godel
通讯作者:
Bélinda Godel
DOI:
10.1144/gsl.sp.1996.112.01.08
发表时间:
1996
期刊:
Geological Society, London, Special Publications
影响因子:
--
作者:
R. Wardle;M. V. Kranendonk
通讯作者:
M. V. Kranendonk
影响因子:
5.8
作者:
H. Prichard;D. Hutchinson;P. Fisher
通讯作者:
P. Fisher
影响因子:
1.4
作者:
T. Skulski;R. Wares;A. Smith
通讯作者:
A. Smith