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TitreA global database of gold deposits: quantification of multi-element ore signatures
TéléchargerTéléchargement (publication entière)
AuteurGrunsky, E C; Dubé, B; Hagemann, S; Brauhart, C W
SourceTargeted Geoscience Initiative 4: Contributions to the understanding of Precambrian lode gold deposits and implications for exploration; par Dubé, B (éd.); Mercier-Langevin, P (éd.); Commission géologique du Canada, Dossier public 7852, 2015 p. 271-285, https://doi.org/10.4095/296647
Année2015
ÉditeurRessources naturelles Canada
Documentdossier public
Lang.anglais
DOIhttps://doi.org/10.4095/296647
Mediaen ligne; numérique
Référence reliéeCette publication est contenue dans Dubé, B; Mercier-Langevin, P; (2015). Targeted Geoscience Initiative 4: Contributions to the understanding of Precambrian lode gold deposits and implications for exploration, Commission géologique du Canada, Dossier public 7852
Formatspdf
ProvinceColombie-Britannique; Alberta; Saskatchewan; Manitoba; Ontario; Québec; Nouveau-Brunswick; Nouvelle-Écosse; Île-du-Prince-Édouard; Terre-Neuve-et-Labrador; Territoires du Nord-Ouest; Yukon; Nunavut
SNRC1; 2; 3; 10; 11; 12; 13; 14; 15; 16; 20; 21; 22; 23; 24; 25; 26; 27; 28; 29; 30; 31; 32; 33; 34; 35; 36; 37; 38; 39; 40; 41; 42; 43; 44; 45; 46; 47; 48; 49; 52; 53; 54; 55; 56; 57; 58; 59; 62; 63; 64; 65; 66; 67; 68; 69; 72; 73; 74; 75; 76; 77; 78; 79; 82; 83; 84; 85; 86; 87; 88; 89; 92; 93; 94; 95; 96; 97; 98; 99; 102; 103; 104; 105; 106; 107; 114O; 114P; 115; 116; 117; 120; 340; 560
Lat/Long OENS-180.0000 180.0000 90.0000 -90.0000
Sujetsgisements minéraux; gîtes minéralogiques; or; minéralisation; géochimie des roches totales; méthodes analytiques; méthodes d'exploration; Archéen; géologie économique; géochimie; Précambrien
Illustrationsplots; tables
Consultation
Endroit
 
Bibliothèque de Ressources naturelles Canada - Ottawa (Sciences de la Terre)
 
ProgrammeÉtude des gîtes d'or, Initiative géoscientifique ciblée (IGC-4)
Diffusé2015 06 11
Résumé(disponible en anglais seulement)
A new approach to characterizing and classifying mineral deposits based on whole-rock geochemistry is currently being developed jointly by the mineral exploration industry, the University of Western Australia, and the Geological Survey of Canada.
Based on 24 elements (Fe, Co, Ni, Re, Pd, Pt, Cu, Ag, Au, Zn, Cd, In, Tl, Pb, Hg, As, Sb, Bi, Te, Mo, W, Sn, La, U), a centred log-ratio transformation is used for representative samples of mineral deposits. Success of this approach requires the use of rigorous analytical protocols that have also been established for this project.
A component of this project is focused on the development of a statistical classification approach to cataloguing ore deposit styles. Research done to date, shows that this methodology has successfully identified a wide range of mineral deposit types including porphyry, lode gold, PGE, skarn, sedimentary rock-hosted massive sulphides, volcanic-hosted massive sulphides and Mississippi-type lead-zinc deposits. This contribution focuses solely on gold deposits.
Geochemical data of unknown metallogenic affinities can be classified and existing classifications can be enhanced/re-defined. The results indicate that trends and differences of a spectrum of gold deposits can be successfully classified using statistical methodologies and metrics for expressing ore chemistry. In conjunction with geological knowledge, this database and associated methodologies will enhance the recognition and classification of a range of lode gold deposit types and could be useful in both greenfields and brownfields exploration programs.
GEOSCAN ID296647