Auteur Stephen J. Barnes
Documents disponibles écrits par cet auteur (7)
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Stephen J. Barnes, Auteur ; Marco L. Fiorentini, Auteur |Komatiites are found in most Archean granite-greenstone terranes, but sulfide Ni mineralization associated with these rocks has a very biased distribution. The global endowment of sulfides Ni in Archean komatiites is overwhelmingly dominated by [...]
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Geoffrey J. Heggie, Auteur ; Marco L. Fiorentini, Auteur ; Stephen J. Barnes, Auteur |Komatiites occur in many Archean greenstone belts and host significant Ni sulfide ore deposits. Establishing the stratigraphy and the control that stratigraphy has on the emplacement and morphology of ultramafic magmatism is crucial in understan[...]
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Geoffrey J. Heggie, Auteur ; Marco L. Fiorentini, Auteur ; Stephen J. Barnes, Auteur |The Maggie Hays Ni-Cu sulfide deposit, located in the ~2.9 Ga Lake Johnston greenstone belt of Western Australia, is hosted in a peridotitic to dunitic subvolcanic feeder that cuts felsic volcanic rocks and sedimentary units. Ore formation at[...]
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Marco L. Fiorentini, Auteur ; Stephen J. Barnes, Auteur ; C. Michael Lesher, Auteur |Platinum-group elements (PGE) are strongly chalcophile and are therefore potentially sensitive indicators of processes involving segregation and accumulation of sulfide melts from silicate magmas. Over 500 new high-precision PGE data for komatii[...]
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Jane E. Collins, Auteur ; Stephen J. Barnes, Auteur ; Steffen G. Hagemann, Auteur |The high-grade Flying Fox komatiite-hosted Ni sulfide deposit, located in the Forrestania greenstone belt of the Archean Yilgarn Craton, Western Australia, is hosted in a deformed and metamorphosed volcano-metasedimentary succession. Postmineral[...]
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Bélinda Godel, Auteur ; Ignacio González-Álvarez, Auteur ; Stephen J. Barnes, Auteur |Recent exploration in the Duketon greenstone belt, Yilgarn craton, Western Australia, led to the discovery of a new occurrence of high-grade Ni-PGE (platinum group element) sulfide mineralization associated with komatiite; this is referred to as[...]
Article : texte imprimé
Stephen J. Barnes, Auteur ; Grant A. Osborne, Auteur ; Doug Cook, Auteur |The Santa Rita ore zone within the Fazenda Mirabela intrusion is an unusual example of high-tonnage magmatic Ni-Cu-PGE sulfide mineralization developed as a stratiform layer within the main cumulus sequence of a layered intrusion. The intrusion [...]
