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TitlePreliminary results from a stratigraphic and structural investigation of the Trout Lake volcanogenic massive sulphide deposit, Flin Flon, Manitoba (part of NTS 63K13)
AuthorOrdonez-Calderon, J C; Lafrance, B; Gibson, H L; Schwartz, T; Pehrsson, S J
SourceManitoba Department of Mines, Resources and Environmental Management, Mineral Resources Division, Report of Activities 2009 p. 37-46 Open Access logo Open Access
Alt SeriesEarth Sciences Sector, Contribution Series 20100219
PublisherManitoba Geological Survey
Mediapaper; on-line; digital
File formatpdf
ProvinceManitoba; Saskatchewan
NTS63K/12; 63K/13; 63L/09; 63L/16
AreaFlin Flon
Lat/Long WENS-102.5000 -101.5000 55.0000 54.5000
Subjectsstructural geology; general geology; lithostratigraphy; petrography; deformation; Geochronology
Illustrationslocation maps; geological sketch maps; stratigraphic cross-sections; photographs
ProgramTargeted Geoscience Initiative (TGI-3), 2005-2010 Flin Flon TGI-3
Released2009 01 01
AbstractThe Trout Lake VMS deposit is a large 20.6 million tonnes rhyolite-hosted Cu-Zn volcanogenic massive sulphide deposit. The deposit is strongly deformed, and metamorphosed at greenschist facies metamorphic conditions. The stratigraphic and structural characteristics of this deposit have not been previously studied in detail. Whether the deposit is complexly folded and fault repeated at mine (hundreds of meters) or regional scale (thousands of meters) has important implications for exploration.
Preliminary results from detailed underground and surface geological mapping as well as core logging show that the footwall to hanging-wall host rocks of the Trout Lake VMS deposit can be subdivided into five different lithological units on the basis of lithofacies and petrographic characteristics. These lithological units show no repetition at the mine scale suggesting that the overall mine stratigraphy has not been fold and fault repeated as previously assumed.
This project aims to resolve the following critical questions regarding the geology of the Trout Lake deposit: 1) the precise age of the ore-hosting rhyolite formation, 2) the space-time relation with other VMS deposits in the Flin Flon area, 3) the geodynamic setting, and 4) the sequence of deformation events that have modified the original geometry of the deposit. Resolving these questions is fundamental to devise successful exploration models that may lead to the discovery of new VMS deposits in the area.

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