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TitreGeology of the Éléonore gold mine and adjacent gold showings, Superior Province, northern Quebec
TéléchargerTéléchargement (publication entière)
AuteurFontaine, A; Dubé, B; Malo, M; McNicoll, V J; Prud'homme, N; Beausoleil, C; Goutier, J
SourceTargeted Geoscience Initiative: 2017 report of activities, volume 1; par Rogers, N (éd.); Commission géologique du Canada, Dossier public 8358, 2018 p. 121-125, https://doi.org/10.4095/306444
Année2018
ÉditeurRessources naturelles Canada
Documentdossier public
Lang.anglais
DOIhttps://doi.org/10.4095/306444
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
SNRC33B/05; 33B/12; 33C/08; 33C/09
Lat/Long OENS -76.2667 -75.7667 52.7500 52.5667
Sujetsgisements minéraux; prospection minière; potentiel minier; or; cuivre; argent; molybdène; genèse des minerais; contrôles des minerais; contrôles structuraux; minéralisation; assemblages de minéraux; étain; bismuth; tungstène; cadre tectonique; métamorphisme; déformation; foliation; crenulation; clivage; linéaments; altération; albitisation; silicification; arsénopyrite; pyrrhotite; loellingite; quartz; feldspath; pyrite; système hydrothermal; gîtes de substitution; intrusions; filons; filons de quartz; veinules; eprentes; filons rocheux; géologie du substratum rocheux; caractéristiques structurales; failles; plis; plans de litage; lithologie; roches sédimentaires métamorphosées; sédimentation turbiditique; brèches; roches ignées; roches intrusives; tonalites; granodiorites; pegmatites; diabases; diorites; roches volcaniques; laves en oreiller; tufs volcaniques; roches sédimentaires; conglomérats; pélites; roches métamorphiques; paragneiss; amphibolites; schistes; analyse des déformations; Archéen; Province de Superior ; Subprovince de La Grande ; Subprovince d'Opatica ; géologie économique; tectonique; géologie structurale; Précambrien
Illustrationslocation maps; geoscientific sketch maps; photographs
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)
Located in the northeastern part of the Superior Province, the Éléonore mine had mineral reserves of 4.57 Moz (23.44 Mt at 6.07 g/t Au), measured and indicated gold mineral resources of 0.93 Moz (5.14 Mt at 5.66 g/t Au) and inferred mineral resources of 2.35 Moz (9.73 Mt at 7.52 g/t Au). Predominantly hosted by metamorphosed and deformed turbiditic rocks of the La Grande subprovince, the deposit is located 1.5 km south of the tectonometamorphic boundary with the Opinaca subprovince. Subparallel ore zones composed an envelope with a width of 70 to 80 m and vertical extension of >1.4 km. Associated with potassic, boron- and calcium-rich alteration assemblages and Au-As-Sb-Bi -W metallic signature, gold mineralization is associated with disseminations of arsenopyrite, pyrrhotite and löllingite. Various mineralization styles include veins and hydrothermal breccia, replacement zones, stockwork of quartz veins and veinlets composed of quartz, dravite, microcline, phlogopite, actinolite, diopside, hedenbergite, muscovite and schorl. Recent activities include field and underground mapping on the Éléonore, Éléonore South and Cheechoo properties. Gold mineralization also occurs within the Cheechoo tonalite/granodiorite, pegmatites and paragneiss (Cheechoo and Moni prospects). At Cheechoo and Moni, gold mineralization is structurally-controlled and associated with the presence of quartz-feldspar-(biotite-arsenopyrite-scheelite) sheeted veinlets in association with silicification albitization and 1 to 2% of arsenopyrite, pyrrhotite, pyrite and visible gold. This emerging gold district shares analogies with hypozonal orogenic gold deposits and reduced intrusion-related gold systems and illustrates the potential of an area affected by a high metamorphic gradient near a subprovince boundary.
GEOSCAN ID306444