Staked as Sun cl (Y41183) in December 1969 by Montana Mines Ltd., which performed geochemical sampling in 1970. Re-staked as Car cl (Y78678) in May 1974 by the Carmacks Syndicate (Castlemaine EL, Welcome North Mines Ltd, W.M. Bath Inv L, and Ventures West Capital L) and optioned to a joint venture between Western Mines Ltd., Cream Silver Mines Ltd. and Belmoral Mines Ltd., which conducted soil geochemistry and magnetic surveys later in the year.
Re-staked as part of the EYM (YA86872) group in 1985 by Chevron Canada Resources Ltd., which performed a soil geochemical survey later in the year. The EYM claims were sold to Big Creek Resources Ltd in spring, 1990. Archer, Cathro & Associates (1981) Ltd filed $6200 of rotary drilling on the EYM claims in March 1992.
Re-staked as Glen cl 1-40 (YB46680) by G. Harris in April 1994 who carried out prospecting and soil sampling. In early 1996, the claims were optioned to La Rock Mining Corp. which carried out soil sampling later in the year. In November 1996, B. Harris staked Castle cl 1-14 (YB96972) to the north.
Re-staked as Glen claims 11-20 (YC09190) by B. Harris in December 1998. The western portion of the original Glen claims was re-staked as Sey cl 1-20 (YC09221) by Archer Cathro & Associates (1981) Ltd in February 1999. B. Harris added Glen cl 1-4 (YC15335) in June 1999.
Northern Freegold Resources re-staked the Rage claims in 2006 and performed a property wide airborne magnetic and VTEM geophysical survey that included the Granger occurrence
Triumph Gold Corp. acquired Northern Freegold Resources in 2015 and the Granger occurrence is currently part of the Freegold Mountain Project.
Regional & Property Geology
The occurrence is partly underlain by Yukon-Tanana Terrane (YTT). The rocks of the YTT in this region consist of Early Mississippian metamorphic rocks separated into meta-sedimentary and meta-igneous suites. The meta-sedimentary suite consists of micaceous quartz-feldspar gneiss, schist and quartzite. The meta-igneous package is comprised of biotite-hornblende feldspar gneiss and coarse-grained granodiorite orthogneiss with lesser amphibolite (Allan & Friend, 2018).
The YTT basement rocks are cut by numerous plutonic and volcanic events from the Mesozoic (Allan & Friend, 2018; AR 090087), including:
1. Early Jurassic Long Lake monzonite;
2. Mid-Cretaceous quartz feldspar and feldspar hornblende porphyry dykes and plugs;
3. Mid-Cretaceous Whitehorse quartz monzonite and granite; and,
4. Late Cretaceous Casino quartz monzonite.
The Castle occurrence is located north of the Big Creek Fault near the contact between Paleozoic metagranodiorite and Early Jurassic Long Lake monzonite intruded by Mid-Cretaceous quartz-feldspar and feldspar hornblende porphyry dykes (AR 093528; Friend et al., 2018). Narrow bands of skarn outcrop as rusty black foliated rock in granitic rocks (AR 093528).
Mineralization & Results
The 1974 program outlined a zone of kaolinization and silicification in granodiorite, surrounded by a halo of quartz veining containing pyrite and minor chalcopyrite (AR 061473). In 1985, sampling outlined coincident but erratic gold-copper anomalies.
The best of ten rocks samples collected from the Castle occurrence in 1985 assayed 1,164 ppb Au, 1,643 ppm Cu, 5,470 ppm Pb, 762 ppm Zn, 724 ppm As, 804 ppm Sb and > 50.0 ppm Ag. Soil sampling alongside the access road produced several anomalous samples with the best returning 574 ppb Au, 197 ppm Cu, 161 ppm Pb, 675 ppm Zn, 2,040 ppm As, 17 ppm Sb and 3.0 ppm Ag (AR 091823).
La Rock Mining’s soil sampling program was designed to follow up the anomalous results obtained by Harris in 1994. Several patchy multi-element anomalies were returned.