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TitreMetamorphosed hydrothermal ore deposits
AuteurCorriveau, L; Spry, P G
SourceGeochemistry of mineral deposits; par Scott, S (éd.); Treatise on geochemistry vol. 13, 2014 p. 175-194, https://doi.org/10.1016/B978-0-08-095975-7.01107-4
Année2014
Séries alt.Secteur des sciences de la Terre, Contribution externe 20110404
ÉditeurElsevier
Édition2
Documentpublication en série
Lang.anglais
DOIhttps://doi.org/10.1016/B978-0-08-095975-7.01107-4
Mediapapier; en ligne; numérique
Formatspdf
Sujetsgisements minéraux hydrothermaux; système hydrothermal; altération hydrothermale; milieu de métamorphisme; zone de roches métamorphiques; altération; géochimie; pétrologie ignée et métamorphique; géologie économique
Illustrationslocation maps; photomicrographs; tables; plots; ternary diagrams
ProgrammeGisements polymétalliques - Zone magmatique du Grand lac de l'Ours (T.N-O.), GEM : La géocartographie de l'énergie et des minéraux
Résumé(disponible en anglais seulement)
This chapter on metamorphosed hydrothermal ore deposits summarizes key attributes of mineral deposits that are hydrothermal in nature, originally formed at shallow crustal depths, entrained in orogenesis, metamorphosed to the upper amphibolite or granulite facies, and preserved. Due to the significant mineralogical, textural, and structural changes associated with metamorphism, such ore systems are commonly camouflaged within their highly deformed and metamorphosed host setting. Nevertheless, the well-documented geochemical and mineralogical signatures and geospatial patterns of alteration zones associated with hydrothermal ore deposits remain diagnostic once metamorphosed. Knowledge of their systematic mineralogical and paragenetic characteristics enhances their identification and may optimize lithogeochemical exploration programs in high-grade metamorphic terranes. With time, this will facilitate discoveries of ores, improve metamorphosed ore deposit models, and further stimulate the development of exploration guidelines for their underexplored host terranes.
GEOSCAN ID290147