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Geochemistry and geothermometry of altered rocks associated with the Geres granite, northern Portugal

Title
Geochemistry and geothermometry of altered rocks associated with the Geres granite, northern Portugal
Type
Article in International Conference Proceedings Book
Year
2007
Authors
Jaques, L
(Author)
Other
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Bobos, I
(Author)
FCUP
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Conference proceedings International
Pages: 435-438
9th Biennial Meeting of the Society for Geology Applied to Mineral Deposits
Dublin, IRELAND, AUG 20-23, 2007
Scientific classification
FOS: Natural sciences > Earth and related Environmental sciences
Other information
Authenticus ID: P-004-CXN
Abstract (EN): Hydrothermal alteration has caused albitization and quartz dissolution within the Geres granite, Portugal. Altered domains within the granite are characterized by a core zone of albitization, and a peripheral zone that contains epidote + vermicular chlorite + calcite + hematite. Homogenization temperatures from authigenic quartz range from 171 to 279 degrees C, with a mode around 220 degrees C. The altered rocks from Geres have very low U and W contents, and W - Mo mineralization in the area is inferred to pre-date albitization and epidote alteration.
Language: English
Type (Professor's evaluation): Scientific
No. of pages: 4
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