Ddhaw Ghro Special Management Area (SMA) is currently withdrawn from mineral claim disposition. A mineral resource assessment of Ddhaw Ghro SMA will be carried out during the fall, 2001, in support of finalizing its management plan. Mapping at 1:20 000 scale, sampling, and prospecting in southeastern Ddhaw Ghro SMA shows complex structural and stratigraphic relations in layered rocks, which are further complicated by intense contact metamorphic alteration around McArthur Batholith. Rocks in roof pendants in the McArthur Batholith are pervasively altered. Southeast of the batholith, a structurally imbricated sequence of Ordovician (Duo Lake Formation) through Devonian (Portrait Lake Formation) rocks contain a slice of maroon and green shale, which may represent a far travelled thrust sheet of Early Cambrian Narchilla Formation, or a facies change in upper Road River Group towards Nogold Unit type lithologies. Sulphide minerals are common in strongly oxidized areas in the contact metamorphic aureole, and in more localized skarn-altered zones.

This report is a review of the Yukon mineral industry for 1976 by the Geology Section, Northern Natural Resources and Environment Branch, Department of Indian and Northern Affairs. It includes descriptions of work conducted on mineral claims by individuals and mineral exploration companies and operating summaries of the several producing mines in the Yukon. It also contains geological papers on select properties. Information in this report was obtained from visits to mineral properties, from personal communication with individuals and from technical reports, trade journals, newspapers, publications of the Geological Survey of Canada and the monthly reports of the District Mining Recorders. A list of assessment reports, both confidential and those available for inspection, is included in the list of Technical Reports. In this report, activities of the mineral industry are divided into lode mining and exploration, coal mining and exploration and placer mining.

not_specified

This report is a review of the Yukon mineral industry for 1978 by the Geology Section, Yukon, Northern Affairs Program, Department of Indian and Northern Affairs. It includes descriptions of work conducted on mineral claims by individuals and mineral exploration companies and operating summaries of the several producing mines in the Yukon. Information in this report was obtained largely from the geological, geochemical and geophysical reports accepted for credit as assessment work by the Department of Indian and Northern Affairs. A list of assessment reports, both confidential and those available for inspection, is included in the list of Technical Reports. In this report, activities of the mineral industry are divided into lode mining and exploration and coal mining and exploration.

This report is a review of the Yukon mineral industry for 1974 by the Northern Natural Resources and Environment Branch, Department of Indian and Northern Affairs. The information in this report was obtained from visits to mineral properties and by personal communciation with individuals involved as well as from technical reports, trade journals, newspapers, publications of the Geological Survey of Canada and the monthly reports of the Mining Recorders of the Dawson, Mayo, Watson Lake and Whitehorse Mining Districts.

This report is a review of the Yukon mineral industry for 1975 by the Geology Section, Northern Natural Resources and Environment Branch, Department of Indian and Northern Affairs. It includes descriptions of work conducted on mineral claims by individuals and mineral exploration companies and operating summaries of the several producing mines in the Yukon. It also contains technical papers on select properties. Information in this report was obtained from visits to mineral properties, from personal communication with individuals and from technical reports, trade journals, newspapers, publications of the Geological Survey of Canada and the monthly reports of the District Mining Recorders. A list of assessment reports, both confidential and those available for inspection, is included in the list of Technical Reports. In this report, activities of the mineral industry are divided into lode mining and exploration, coal mining and exploration and placer mining.

The mineral potential of the Northern Kluane Wildlife Sanctuary (KWS) is rated as HIGH. Within the KWS, rocks of the Wrangellia Terrane rate the highest as they include two mineral deposits with proven reserves, one past producer, favorable stratigraphy for a variety of mineral deposits with production history and proven reserves elsewhere in the Cordillera as well as over 45 mineral occurrences within the boundaries of the KWS. Ultramafic hosted Ni-Cu-PGE; Fe, Cu, Au skarn, replacement or basaltic copper, VMS and polymetallic vein deposits are hosted in this belt of extremely high mineral potential. Pennsylvanian and post-accretionnary Cretaceous and Tertiary plutons are also of high potential for a variety of mineral deposit types including porphyry copper, epithermal gold and silver, skarns and polymetallic veins. Sedimentary and volcanic rocks of the Gravina-Nutzotin belt are host to VMS, skarn, and gold and polymetallic vein occurrences. The lower part of the Alexander Terrane, which is exposed within the KWS, contains few mineral occurrences locally but, at a regional scale, contains numerous important and varied mineral deposits. The Triassic succession of Alexander Terrane is not known to outcrop within the KWS although similar Triassic rocks of the Karmutsen Assemblage do. The Alexandrian portion of the KWS occupies the most remote and ice covered corner of the study area. The mineral potential of the Wrangell lavas and related plutons is not well understood. More mapping is needed in order to define the extent of the reported but undocumented felsic end member of this suite. A sliver of Coast Plutonic Metamorphic Complex and Kluane Schist occurs within the KWS. The Amphitheater assemblage and the Quaternary cover are the lowest rating units. Geological map coverage is very poor for the area between the White and Donjek Rivers and needs to be upgraded in order to determine the extent of high potential rocks in that part of Wrangellia.

This report is a review of the Yukon mineral industry for 1977 by the Geology Section, Yukon, Northern Affairs Program, Department of Indian and Northern Affairs. It includes descriptions of work conducted on mineral claims by individuals and mineral exploration companies and operating summaries of the several producing mines in the Yukon. It also contains technical papers on select properties. Information in this report was obtained from visits to mineral properties, from personal communication with individuals and from technical reports, trade journals, newspapers, publications of the Geological Survey of Canada and the monthly reports of the District Mining Recorders. A list of assessment reports, both confidential and those available for inspection, is included in the list of Technical Reports. In this report, activities of the mineral industry are divided into lode mining and exploration, coal mining and exploration and placer mining.

This report outlines the results and the conclusions of a study of the mineral potential of the Eagle Plains area. The accompanying mineral potential map ranks the different tracts according to their relative order of mineral potential, from highest to lowest. The highest ranking rocks occur on the flanks of the Richardson Anticlinorium which corresponds to the flanks of the southern Richardson Mountains. Other contributions resulting from this study include: complete geochemical coverage of the area provided by a new Regional Geochemical Survey and reanalysis of silt samples of a pre-existing survey; the discovery of several new mineral occurrences; the discovery of rocks of possible volcanic origin, previously undocumented in the area; and modifications to the pre-existing geology maps.

not_specified