Economic geology : bulletin of the society of economic geologists, Vol. 106 N° 7. Economic geology and the bulletin of the society of economic geologists - Novembre 2011
| Titre : | Economic geology : bulletin of the society of economic geologists, Vol. 106 N° 7. Economic geology and the bulletin of the society of economic geologists - Novembre 2011 |
| Type de document : | Bulletin |
| Paru le : | 19/12/2011 |
Dépouillements
Article : texte imprimé
Porphyry Cu ± Mo ± Au deposits are commonly associated with intermediate composition arc-related igneous rocks with high Sr/Y (and La/Yb) ratios, and such rocks are equated by some researchers with melts derived from subducted oceanic crust unde[...]
Article : texte imprimé
Stephen J. Barnes, Auteur ;
Grant A. Osborne, Auteur ;
Doug Cook, Auteur
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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 [...]
Article : texte imprimé
de Oliveira, D. P. S., Auteur ;
J. X. Matos, Auteur ;
C. J. P. Rosa, Auteur
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The Iberian Pyrite Belt is one of the most outstanding European ore provinces and hosts one of the largest concentrations of massive sulfide deposits today, totaling 1,850 million metric tons (Mt) in more than 90 deposits. Lagoa Salgada is a sma[...]
Article : texte imprimé
Kathryn E. Kitney, Auteur ;
Gema Ribeiro Olivo, Auteur ;
Donald W. Davis, Auteur
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The Barry gold deposit is an example of an Archean greenstone-hosted lode gold deposit located in the Urban-Barry greenstone belt in the Abitibi subprovince of Québec, Canada. The host mafic volcanic rocks are part of the 2717 Ma Macho Formation[...]
Article : texte imprimé
Dipak C. Pal, Auteur ;
Trisrota Chaudhuri, Auteur ;
Chris McFarlane, Auteur
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The present study combines textures, compositions, and in situ dating of allanite and whole-rock geochemistry from the Bagjata uranium deposit in the Singhbhum shear zone, the most important uranium-producing belt in India, to investigate the ch[...]
Article : texte imprimé
Andrew G. Conly, Auteur ;
Steven D. Scott, Auteur ;
Hervé Bellon, Auteur
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Apart from its large reserves of Cu-Co-Zn mineralization contained within stratiform ore beds or mantos, the Boléo district of central Baja, Mexico, also contains significant concentrations of Mn oxides (typically 2–3 wt % Mn) interspersed with [...]
Article : texte imprimé
Field mapping of carbonate-hosted base metal showings in the Milne Inlet graben of the Mesoproterozoic Borden basin, Nunavut, has identified the main geologic settings for mineralization in the district that hosts the past-producing Nanisivik de[...]
Article : texte imprimé
John Houston, Auteur ;
Andrew Butcher, Auteur ;
Peter Ehren, Auteur
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The recent increase in demand for lithium has led to the development of new brine prospects, particularly in the Central Andes. The brines are hosted in closed basin aquifers of two types: mature, halite dominant, and immature, clastic dominant.[...]
Article : texte imprimé
María Dolores Ruiz Cruz, Auteur ;
de Galdeano, Carlos Sanz, Auteur ;
Carmen Garrido, Auteur
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Microdiamonds from granulite facies gneisses of the Northern Rif (Spain and Morocco) have been studied by electron backscatter diffraction (EBSD). Diamond identification using other techniques, such as Raman spectroscopy, is hindered by microdia[...]
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