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- W2267268938 abstract "The Coxheath Cu-Mo-Au porphyry-type deposit, located while the most abundant sulphide mineral in the system is in the Coxheath Hills southwest of Sydney, occurs within a pyrite. Based on our investigations there is a strong structural Late Precambrian (-620 Ma) volcanic-plutonic complex. control for both the alteration and mineralization at Coxheath. High-grade (ca. 10%) mineralization was mined in the early Mineralization is associated with two distinct structural 1900's and more recently its potential as a low-grade Cu-Au features; shear zones and sheeted veins. The shear zones dip system has been realized. The deposit has generally been steeply and strike southeast, and are typically several metres regarded as anomalous in the Canadian . Appalachians, as thick. These shear zones fonn a stockwork of massive porphyry-type mineralization of pre-Mesozoic age is relatively tounnaline veins bordered by pervasive alteration halos of rare in the geological record. pink K-feldspar. Chalcopyrite is abundant in the stockwork, Previous geological studies of the Coxheath area include occurring as discontinuous veinlets and blebs. Sheeted vein regional and detailed mapping, geochemical studies and networks I 0-20 m wide consist of hundreds of subparallel mineralogical investigations. This study integrates previous veins per metre. These sheeted veins, typically a few work with ongoing investigations of vein structure, mineral millimetre to several centimetres thick, consist of quartz and paragenesis and geochemical studies of both host rocks and chalcopyrite fill, with localized occurrences of molybdenite. alteration. During the past summer, field work on the main Silicification and potassic alteration associated with the mineralized zone focused on structure, alteration, and sheeted veins is very intense, completely overprinting the mineralization and the inter-relationships of these features. In primary features of the host rock. addition, drill core of the deposit was logged. Mineralization is considered to reflect the focusing of Mineralization-related alteration of the host hornblende late-stage magmatic fluids into a volcanic-plutonic complex diorite and plagioclase-phyric andesite at Coxheath includes located within a zone of active deformation. The widespread zones of potassic, phyllic, argillic, tourmaline, and propylitic development of alteration reflects the interplay of both assemblages; however, within the study area only potassic, magmatic and non-magmatic fluids and favourable structural tourmaline, and propylitic alteration occur. Ore mineralization conditions. consists of chalcopyrite, molybdenite, minor bomite, and gold," @default.
- W2267268938 created "2016-06-24" @default.
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- W2267268938 date "2000-01-01" @default.
- W2267268938 modified "2023-09-23" @default.
- W2267268938 title "Abstract: Geological investigation of the Coxheath Cu-Mo-Au System, Cape Breton Island, Nova Scotia: structurally controlled porphyry-type mineralization" @default.
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