Economic geology : bulletin of the society of economic geologists, Vol. 107 N° 5. Economic geology and the bulletin of the society of economic geologists - Août 2012
| Titre : | Economic geology : bulletin of the society of economic geologists, Vol. 107 N° 5. Economic geology and the bulletin of the society of economic geologists - Août 2012 |
| Type de document : | Bulletin |
| Paru le : | 21/10/2012 |
Dépouillements
Article : texte imprimé
Patrick Mercier-Langevin, Auteur ;
Michel G. Houlé, Auteur ;
Benoît Dubé, Auteur
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The Archean, which represents more than a third of Earth’s history, contains some of the largest and richest ore deposits of the world. Numerous cratons of variable size and age have been mapped (Fig. 1) and others are still being discovered or [...]
Article : texte imprimé
Stephen J. Barnes, Auteur ;
Marco L. Fiorentini, Auteur
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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 [...]
Article : texte imprimé
Marco Fiorentini, Auteur ;
Steve Beresford, Auteur ;
Mark Barley, Auteur
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The Agnew-Wiluna greenstone belt of Western Australia is the largest komatiite-hosted nickel sulfide belt in the world and contains two world-class Ni-Cu-(PGE) deposits and a host of smaller deposits. This study focuses on the broader scale geol[...]
Article : texte imprimé
Geoffrey J. Heggie, Auteur ;
Marco L. Fiorentini, Auteur ;
Stephen J. Barnes, Auteur
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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[...]
Article : texte imprimé
Geoffrey J. Heggie, Auteur ;
Marco L. Fiorentini, Auteur ;
Stephen J. Barnes, Auteur
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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[...]
Article : texte imprimé
V. Taranovic, Auteur ;
C. M. Lesher, Auteur ;
M. G. Houlé, Auteur
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The C zone, located in Bannockburn Township approximately 30 km W of Matachewan, Ontario, is one of several komatiite-associated Ni-Cu-(PGE) deposits within the 2710 to 2704 Ma Tisdale volcanic episode of the Abitibi greenstone belt. The sulfide[...]
Article : texte imprimé
Jane E. Collins, Auteur ;
Stephen J. Barnes, Auteur ;
Steffen G. Hagemann, Auteur
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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[...]
Article : texte imprimé
Adam A. Garde, Auteur ;
Martin Whitehouse, Auteur ;
Rasmus Christensen, Auteur
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The Qussuk gold occurrence, located in southern West Greenland (North Atlantic Craton), is a flattened, transposed, and metamorphosed, 20 km long Au ± Cu system interpreted as an epithermal mineralization system of Mesoarchean age. The Qussuk mi[...]
Article : texte imprimé
Olivier Côté-Mantha, Auteur ;
Réal Daigneault, Auteur ;
Damien Gaboury, Auteur
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The Au-Ag-Cu Brosman prospect is located in the Line Lake area on the northern limb of the Chibougamau anticline, in the northeast part of the Archean Abitibi greenstone belt. This prospect comprises a broad N-S, subvertical mineralized envelope[...]
Article : texte imprimé
Patrick Mercier-Langevin, Auteur ;
Réal Daigneault, Auteur ;
Jean Goutier, Auteur
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The Archean La Grande and Eastmain domains of the La Grande subprovince in the James Bay region of northwestern Québec are the focus of renewed and extensive exploration as a result of recent major discoveries made in this region (e.g., ~8 Moz A[...]
Article : texte imprimé
François Leclerc, Auteur ;
Lyal B. Harris, Auteur ;
Jean H. Bédard, Auteur
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The structure and stratigraphy of the Chapais-Chibougamau mining camp in the Archean Abitibi greenstone belt of the Superior Craton, Quebec, Canada, is reevaluated from new aeromagnetic data, geochronology, and field studies to provide a framewo[...]
Article : texte imprimé
Ross L. Sherlock, Auteur ;
Andrew Shannon, Auteur ;
Manfred Hebel, Auteur
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The Archean Hope Bay greenstone belt is located in the Bathurst Block of the northeastern part of the Slave Structural Province, a predominantly Archean, granite-greenstone-metasedimentary terrane. The greenstone belt is dominated by mafic volca[...]
Article : texte imprimé
D. A. Schneider, Auteur ;
J. Bachtel, Auteur ;
A. K. Schmitt, Auteur
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Quartz-carbonate-Au vein deposits in the Timmins-Porcupine gold camp, Abitibi greenstone belt, have equivocal protracted parageneses and formed during late to post-Kenoran (2750–2670 Ma) deformation and metamorphism. Secondary ion mass spectrome[...]
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