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Geologic setting, genesis, and potential of the Rusty Springs Ag-Pb-Zn-Cu property, northern Yukon (NTS 116 K/8 and K/9)
Despite many years of exploration and relatively limited success, the Rusty Springs prospect retains considerable potential for a large-tonnage deposit. The property lies within the east-vergent Taiga-Nahoni fold belt, occurring in the core of a structural culmination exposing host dolostones of the Lower and Middle Devonian Ogilvie Formation. Mineralization occurs in stratabound and discordant zones along the contact with the overlying Devono-Mississippian unnamed shale. Various deposit models, ranging from Mississippi Valley-type to epithermal vein-type have been employed. Poor exposure and relatively deep weathering, resulting from the lack of Pleistocene glaciation, account for the lack of consensus with regard to genesis. Evidence points to the potential for a high-temperature, carbonate-hosted massive sulphide deposit (manto-chimney complex). The great extent of mineralized and altered rocks, together with their stratabound nature, significant thickness, local high grades, and potential for supergene enrichment, suggest that Rusty Springs remains an attractive drill-oriented exploration target.
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Yukon’s Carlin-Type Gold Deposits (Rackla Belt, Canada): Main Characteristics and New Insights on Alteration Styles and Geochemistry
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for a copy of this paper please contact the Yukon Geological Survey; geology@gov.yk.ca.
Geology, geochemistry and origin of Rusty Springs lead-zinc-silver deposits, Yukon Territory
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A copy of this thesis is available at the EMR library – QE195.K57 1982.
Mines and important mineral deposits of the Yukon and Northwest Territories, 1982
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not_specified
New geological insights into the Carmacks Copper Cu-Au-Ag deposit, central Yukon (Yukon MINFILE 115I 008)
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not_specified
New insights into the geology and mineral potential of the Coast Belt in southwestern Yukon.
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The southwestern Yukon Coast Belt mapping project is a joint Yukon Geological Survey/Geological Survey of Canada initiative operated under Natural Resources Canada’s GEM (Geomapping for Energy and Minerals) program. This project is aimed at investigating the geological relationships and mineral potential of the Kluane Schist, the Ruby Range batholith and the Yukon-Tanana terrane in southwestern Yukon. Bedrock mapping at 1:50 000-scale followed a 400 m line-spaced aeromagnetic survey flown in the winter of 2010. Preliminary results indicate the presence of a northeast-dipping structural stack through an ~40 km-thick crustal section, whereby the Kluane Schist occupies the lowest structural level and the Yukon-Tanana terrane the highest. The Ruby Range batholith intruded along the contact between the Kluane Schist and the Yukon-Tanana terrane, and was emplaced late in the deformation history. An orthogneiss/paragneiss unit of unknown tectonic affinity was mapped structurally between the Ruby Range and the Kluane Schist. Detrital zircon analyses from two samples of Kluane Schist indicate that the onset of deposition for this metasedimentary sequence occurred after ca. 94 Ma. Two significant metamorphic events, dated at 82 and 70 Ma, affected the Kluane Schist. This indicates that original structural juxtaposition between the Kluane Schist and the Yukon-Tanana terrane pre-dated intrusion of the Ruby Range batholith. Mineral potential in the Coast Belt area is significant and includes porphyry Cu-Mo-Au, epithermal Au-Ag and orogenic Au occurrences. The upper level of the Ruby Range batholith is most prospective for porphyry and epithermal mineralization, while the Kluane Schist is most prospective for orogenic Au mineralization.
Yukon Mineral Exploration Program: 2014-2015 Update
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not_specified
Bedrock Geology, Koidern River area, Yukon,(parts of NTS 115F/9, 15, 16 and 115G/12)
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not_specified
Rich replacement deposits and related mineralization styles in the Ketza River Deposit, Yukon Territory
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not_specified
Yukon Mineral Exploration Program: 2016-17 Update
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not_specified
The Stewart River placer project, west-central Yukon
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The Stewart River map area (115 O&N) is the most important historic and current placer gold producing region in the Yukon. Unfortunately, the historic placer-gold deposits are becoming depleted, and more efficient mining of existing deposits and exploration for new deposits must be encouraged. Although placer deposits in the Klondike district are well described and their origin is quite well understood, placer deposits in the remaining part of the Stewart River map area have not been so well documented. The purpose of the Stewart River placer project is to describe and document the geology of known placer deposits, to interpret the formation of the placer deposits, and to relate the geology of the placer deposits to the regional surficial and bedrock geology. The objectives of the project are to aid in the exploration and mining of placer deposits by providing a comprehensive and up-to-date placer geoscience database. The utility of the placer database is that it can be used to construct placer deposit models (general summaries of given placer settings). These models then serve as predictors for future placer exploration and mining. Fieldwork for the project began in 1998 and will be completed in 2001; results of the project will be published in a final report and a resource appraisal map for placer gold.
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