Find publications, data and maps managed by the
Yukon Geological Survey

YGS Publication Details

Reference Number
Geology, mineralization and sampling results from the Kalzas tungsten property, central Yukon
Reference Type
Indian & Northern Affairs Canada/Department of Indian & Northern Development: Exploration & Geological Services Division
Document Type
Annual Report Paper

General Information

Abstract: Kalzas, in central Yukon, is a porphyry-style stockwork and sheeted-vein wolframite deposit. Alteration includes a potassic core, a quartz-tourmaline-sericite zone and an outer quartz-sericite-pyrite zone, the latter in excess of 2 km in diameter. Wolframite is confined to the inner two zones, in an oval area 1500 m by 800 m. The wolframite is disseminated within the quartz-tourmaline stockwork and also occurs as coarse crystals in sheeted veins. Mineralization occurs within Neoproterozoic to Early Cambrian Hyland Group quartzites and phyllites, which are likely intruded at depth by a pluton, possibly of the Cretaceous Tombstone Suite.

From 1981 to 1984, Union Carbide carried out mapping, soil and rock geochemistry, an airborne magnetometer survey, road building, trenching and drilling of two diamond drill holes. Results from Copper Ridge's 2001 sample program range from 0.3% WO3 to 0.5% WO3 over widths up to 70 m. They demonstrate the potential to define a signifi cant resource of surface-mineable tungsten mineralization at a grade of 0.4% WO3 or better. Drilling is required to confirm grade continuity at depth and along strike.
Authors: Carlson, G.C.
Keywords: Geological Mapping, mineral potential
NTS Mapsheet(s): 105M07
Citation: Carlson, G.C., 2002. Geology, mineralization and sampling results from the Kalzas tungsten property, central Yukon. In: Yukon Exploration and Geology 2001, Emond, D.S., Weston, L.W., and Lewis, L.L. (eds.), Exploration and Geological Sciences Division, Yukon Region, Indian and Northern Affairs Canada, p. 269-278.


Name Comment
Report File is .32 MB Download PDF

Location Map

NTS Mapsheet(s): 105M07

Related Occurrences

Name Number Type Status

Related Publications

Number Relationship Authors Title
YEG2001 Contained By Emond, D.S., Weston, L.W., and Lewis, L.L. (eds.) Yukon Exploration and Geology 2001