Work History

Staked as 60 Jack, CCL, CEL and Lou claims (87004) in Aug/65 by J. Lerner & M. Chefkoi and optioned to A. Moisey, who enlarged the property and carried out geochemical sampling and bulldozing in 1965. The claims were transferred to a new company, Sixty Mile Mining Company Ltd, which carried out additional bulldozing and EM surveying in 1966-67 and shipped about 9 tonnes of hand-cobbed ore from the No. 3 Vein in 1966. Mount Crag Mines Ltd tied on Rex & Lubra cl (Yl5l62) to the west in Jun/67 but no work was filed. Connaught Mines Ltd optioned the property early in 1968 and carried out geological mapping, geochemical sampling, extensive bulldozer trenching and drilled 2 holes (112.8 m) in 1968-69. 
J. Lerner restaked the No. 3 Vein as Judy claim 2 (Y82496) in May/74 and mined and shipped about 191 tonnes in 1974-76. In Jan/81, he restaked the Rex-Lubra as Judy cl 1, 3-17 (YA55162), transferred the property to Judy Mining Syndicate and sold it to Lougheed Resources Inc, which carried out bulldozer trenching later in the year. 
The property was transferred to Bethex Exploration Inc and optioned by Madre Mining Ltd in 1983; transferred to Judy Resources Inc in 1984; Cumo Resources Ltd and X-Pat Devevelopment Ltd in 1986; and optioned to Shakwak Exploration Company Ltd in 1988. 
Croesus Res Inc partially restaked the occurrence as Pra cl 41-44 (YA89114) in Apr/87 and carried out geological mapping, geochemical sampling, geophysical surveying and bulldozer trenching later that year. The property was then optioned to Red Fox Minerals Ltd which drilled 10 holes (315.8 m) in 1988. The Pra claims were transferred in May/89 to Walhala Exploration Ltd. 
Restaked as Mos cl 31-54 (YC07678) in Jul/98 by 17363 Yukon Inc, which surrounded the original claims with Mos cl 55-195 (YC12126) in Aug/98 and staked Mos cl 200-205 (YC12432) and Mos cl 206-209 (YC12525) 2.7 km to the north in Sep/98. The company carried out limited prospecting and geochemical sampling at that time and in 1999 Equity Engineering Ltd carried out a property examination on behalf of 17363 Yukon Inc which included limited geological mapping and geochemical sampling.

Capsule Geology

North-northeast striking, mesothermal quartz-carbonate-sulphide veins cut Late Devonian to mid-Mississippian aged Nasina Assemblage schists of the Yukon Tanana Terrane and Early Mississippian granitic augen gneiss south of Mosquito Creek. Late Cretaceous monzonitic to granodioritic intrusives are found at two main locations on the property. 
Most of the work has been performed at the northwest locality (039B), called No. 3 Vein. Galena and arsenopyrite, with minor sphalerite, tetrahedrite and boulangerite, form lenses over 12.1 m long and 0.9 to 1.2 m thick in quartz veins up to 2.1 m thick in a complex en echelon vein system. The 1966 and 1974-76 shipments were made from a single lens and averaged about 2 228.5 g/t Ag, 60% Pb and 1.03 g/t Au. The best 1969 intersection was 130.3 g/t Ag and 2.7% Pb across 0.7 m. 
The southeast locality (039A), called the No. 2 and No. 7 Veins, has received less work and is more weakly mineralized. 
Glasmacher and Friedrich (1992) recognized three stages of vein formation: (1) quartz-pyrite, (2) arsenopyrite-galena and, (3) quartz-pyrite-sphalerite-chalcopyrite-freibergite. Precious metals were deposited during the second stage. Fluid inclusion and microprobe studies show that the veins formed from high salinity, low pH fluids at temperatures which were initially as high as 330 degrees C. 
The Tony and Pra claims covered the contact between quartzite, limestone and skarn of the Nasina Series, quartz monzonite and Pelly Gneiss intruded by Cretaceous granite. Altered quartz monzonite on the property returned anomalous Cu and Mo values, and magnetite-quartz-carbonate and diopside skarn returned anomalous values in Bi, Au, As, Ag with Pb, Zn and Cu. 
Equity¿s work in 1999 on behalf of 17363 Yukon Inc included a thorough review and compilation of available data for this occurrence as well as the adjacent Connaught and Butler occurrences (Minfile Occurrences #115N 040 and 042, respectively). Limited sampling during their property examination confirmed historic values returned during previous investigations. Many of the features diagnostic of other recently recognized intrusion-related gold and base metal occurrences and deposits throughout the Tintina Gold Belt were found to be present in this area.