not_specified

Geology of the Whitehorse Copper Belt (NTS 105 D/11), southern Yukon. A compilation including a 1:25 000-scale geological map with marginal notes on bedrock geology, mineral occurrences, mineral deposits and grades of some mineral deposits.

A placer mining and exploration compilation of parts of the Watson Lake and Whitehorse mining districts, southern Yukon Territory, Canada. This compilation includes the location, history and previous work, description of bedrock geology, surficial geology and mineralization, as well as lists of related references. Accompanying this report are four 1:250,000-scale maps (Watson Lake, 105A; Whitehorse, 105D; Teslin, 105C; and Wolf Lake, 105B) which display the locations of the placer occurrences discussed in the report.

This report includes a legend and schematic cross section, 3 maps straddling Whitehorse trough, and an appendix of geochronological and fossil data tables for each map sheet. This compilation presents an integrated structural interpretation of Whitehorse trough in southern Yukon.

A placer mining and exploration compilation of NTS map sheet 105E, southern Yukon Territory, Canada. This compilation includes the location, history and previous work, description of bedrock geology, surficial geology and mineralization. Accompanying this report is one 1:250,000-scale map (NTS 105E) which displays the locations of the placer occurrences discussed in the report.

A placer mining and exploration compilation of NTS map sheet 106D, central Yukon Territory, Canada. This compilation includes the location, history and previous work, description of bedrock geology, surficial geology and mineralization. Accompanying this report is one 1:250,000-scale map (NTS 106D) which displays the locations of the placer occurrences discussed in the report.

This report is a review of the Yukon mineral industry for 1971 and 1972 by the Northern Economic Development Branch of the Department of Indian Affairs and Northern Development. The information in this report was obtained from property visits, communication with company personnel, technical reports of companies, trade journals and reports of the Mining Recorders of the Dawson, Mayo, Watson Lake and Whitehorse Mining districts.

Magmatism in the Nahanni region, which defines the eastern extent of the Tintina Gold Province, is generally associated with tungsten mineralization and/or gold-copper-antimony-bismuth-lead-zinc metal occurrences. Intrusions are subalkaline, granitic to granodioritic, and contain several types of textural variations and highly evolved phases. The intrusions range from large composite batholiths to small stocks with associated felsic dykes and veins. Initial U-Pb and Ar-Ar geochronology reveals ages of 97.5-95 Ma with short (0.5-1.5 m.y.) cooling periods, although the intrusion associated with the Cantung tungsten-skarn orebody cooled over a relatively long period (3 m.y.). Magmatism in the area has been interpreted as crustally derived, however, the rare earth element primitive-mantlenormalized profile revealed negative niobium, tantalum and titanium anomalies suggesting an arctype setting. Furthermore, the granites lack volumetrically significant, primary peraluminous mineralogies characteristic of S-type granites.

Detailed exploration conducted during 2006 in the western part of the Skukum Creek deposit has revealed new structural, mineralogical and geochemical features. The deposit incorporates a number of (at least six or seven) sub- parallel narrow mineralized zones, coincident with andesite-dacite-rhyolite dyke swarms extending for at least 1 km along strike and for hundreds of metres down-dip. Various mineralized zones differ in size, structural setting, intensity and composition of mineralization, and, in total, form a large mineralized package more than 200 m wide, corresponding to a property- to district-scale fault zone extending for over 10 km and traced by a dyke belt. Significant potential exists for the exploration of these structures along strike and down-dip. The diamond drilling intersected numerous high-grade intercepts of gold and silver mineralization corresponding to the low-sulphidation sub-type of epithermal gold-silver deposits. However, strong enrichment in base metals (up to 25% of combined Zn+Pb+Cu) and arsenic suggests essential differences from typical epithermal mineralized systems.