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TitreControls on the distribution, style, composition and timing of the gold-bearing mineralized zones of the Horne 5 deposit, Abitibi Greenstone Belt, Quebec
TéléchargerTéléchargement (publication entière)
AuteurKrushnisky, A; Mercier-Langevin, P; Ross, P -S; Goutier, J; McNicoll, V J; Moore, L; Pilote, C; Bernier, C
SourceTargeted Geoscience Initiative: 2017 report of activities, volume 1; par Rogers, N (éd.); Commission géologique du Canada, Dossier public 8358, 2018 p. 95-98, https://doi.org/10.4095/306439
Année2018
ÉditeurRessources naturelles Canada
Documentdossier public
Lang.anglais
DOIhttps://doi.org/10.4095/306439
Mediaen ligne; numérique
Référence reliéeCette publication est contenue dans Rogers, N; (2018). Targeted Geoscience Initiative: 2017 report of activities, volume 1, Commission géologique du Canada, Dossier public 8358
Formatspdf
ProvinceQuébec
SNRC32D/02; 32D/03; 32D/06; 32D/07
Lat/Long OENS -79.0531 -78.9933 48.2622 48.2361
Sujetsgisements minéraux; prospection minière; potentiel minier; or; argent; gîtes volcanogènes; gîtes sulfureux; genèse des minerais; contrôles des minerais; contrôles structuraux; minéralisation; géologie du substratum rocheux; caractéristiques structurales; failles; lithologie; roches ignées; roches volcaniques felsiques; volcanoclastique; rhyolites; andésites; roches intrusives; syenites; trondhjémites; tonalites; diabases; intrusions; assemblages de minéraux; clastes; sulfures; électrum; antécédents tectoniques; métamorphisme; déformation; remobilisation; recristallisation; gîtes de substitution; roches hôtes; perméabilité; milieux marins; analyses de carottes de sondage; Archéen; Ceinture d'Abitibi Greenstone ; Groupe de Blake River ; Faille d'Horne Creek ; géologie économique; tectonique; géologie structurale; Précambrien; Protérozoïque
Illustrationsgeoscientific sketch maps; photographs; photomicrographs
Consultation
Endroit
 
Bibliothèque de Ressources naturelles Canada - Ottawa (Sciences de la Terre)
 
ProgrammeGestion de la connaissance de IGC, Initiative géoscientifique ciblée (IGC-5)
ProgrammeSystèmes aurifères, Initiative géoscientifique ciblée (IGC-5)
Diffusé2018 01 19
Résumé(disponible en anglais seulement)
The gold-bearing Horne 5 VMS deposit is located in the Archean Blake River Group of the Abitibi greenstone belt. Hosted within steeply-dipping, north-facing felsic volcaniclastic units, the deposit is fault-bounded and within the boundaries of the Horne block. Mineralization consists of a series of stacked massive to semi-massive sulphide lenses alternating with disseminated and stringer sulphide zones in coarse felsic volcaniclastic units which often contain massive sulphide clasts. Results from this study show: i) gold and silver are associated with a sulphide assemblage composed dominantly of pyrite and lesser sphalerite, chalcopyrite and magnetite; ii) gold appears to be hosted in sulphide grains and electrum was only rarely observed as tiny blebs associated with remobilized chalcopyrite and near recrystallized pyrite grains, suggesting local remobilization due to metamorphism and deformation; iii) gold-bearing mineralization is partly controlled by the primary permeability of the host volcanic units and formed mostly by replacement of the host rocks under the paleo-seafloor. The Horne 5 deposit represents an opportunity to better understand ore-forming processes in large Archean synvolcanic gold systems.
GEOSCAN ID306439