The Trevor Peak showings, west of Kinaskan Lake, were located on the Axe claims of Ascot Resources Ltd which were staked in 1988. The area has been mapped on a regional scale as being underlain by Upper Triassic Stuhini Group sediments intruded by dikes, sills and plutons of Early Jurassic age (Open File 1997-3). Property rocks are described as cherty mafic ash tuffs which are variably hornfelsed. Contact with the Early Jurassic Groat stock occurs to the immediate north and west of the showing area. The Groat stock is a faulted, northeast trending, coarse-grained porphyritic to fine-grained equigranular intrusion with granodiorite to quartz monzonite modal compositions. A Uranium-Lead age date of 205.1 plus/minus 8 Ma was determined by R.M. Friedman of the University of British Columbia (Fieldwork 1996, page 295).
The Flin, Flon, Toon and Ferro showings are gossanous shear structures which occur over an area of 500 by 600 metres within the cherty ash tuff unit. The structures are several metres in width, strike approximately north south and dip to the west. Mineralization consists of grey to white quartz veining with stringers and disseminations of pyrite, chalcopyrite and arsenopyrite. Assay results from the best showings include the following (Assessment Report 21858, page 16): 1) 17 grams per tonne gold and 1.9 per cent copper across 0.8 metre on the Toon showing. This zone is traceable for 170 metres. 2) 23.0 grams per tonne gold and 0.5 per cent copper across 0.5 metre on the Flin showing. 3) On the Ferro showing, a prominent quartz vein was sampled at two intervals 40 metres apart yielding 18.0 grams per tonne gold across a 1.5-metre true width and 11.8 grams per tonne gold across a 0.6-metre true width. Pyrrhotite and galena are also reported.
An examination of the Ferro showing in 2016 indicated extensive ferricrete in Trench 4 at the location of the high-grade samples, suggesting possible concentration of the gold. However, intensely silicified diorite was observed beneath the capping here with 5 per cent chalcopyrite. Narrow quartz-sulphide veins appeared to cut the ferricrete. A zone of high-grade grab samples was chip sampled below the Main helipad. All trenches were examined and all showings, except for the Flin, which consists of a gossanous cliff face.
Mineralization appears to be concentrated proximal to diorite bodies and at structural intersections (steep southerly and moderate to steep south-westerly. Gossanous zones up to 30 metres wide are evident (south Flon) but were not sampled. Prospecting on the south side in 2016 outlined minor 15 to 60 centimetres wide, brittle fractures with quartz-sulphide veins through the centre, locally with malachite stained wallrock.
High grade gold results were confirmed across the northerly trending Ferro showing. Another significant possible northerly vein fault (East zone) is partly defined approximately 400 metres east of the Ferro showing.
WORK HISTORY
From 1989 to 1991, prospecting, rock and soil geochemical sampling, mapping and four reconnaissance IP lines to were completed by Ascot Resources Ltd. with discovery of four showings on north face of Trevor Peak, all as result of follow-up of silt anomalies obtained in 1989. As of 1991, the Axe property consisted of some 59 claims totalling 932 units. Work reported on the Axe claims in 1990 and 1991 (primarily rock, soil and silt sampling) was spread over several showings on these extensive holdings. The Trevor Peak occurrence area was extensively prospected, sampled and mapped in 1990 during which time several showings were discovered: the Flin, Flon, Toon and Ferro.
In 2003, Canadian Gold Hunters Corp collected 86 soil and or talus fines at 50-meter intervals from two contour soil lines on the south and east facing slopes of Trevor Peak. Six rock samples were also collected. Minimal work at Trevor Peak failed to identify mineralized gold-bearing veins and structures on the south side of the ridge however strongly anomalous gold, copper and arsenic values in talus fines suggested the structures continue southward.
In 2004, a small trenching program conducted by Canadian Gold Hunters was also carried out over a peripheral, gold-silver vein system located on the north facing slopes of Trevor Peak. Four trenches/rock cuts totaling 50.0 metres were blasted from rock faces and scree on the steep, north facing slope of Trevor Peak. A fifth trench totaling 11.1 metres was hand dug. Trenching of a gold-chalcopyrite-arsenopyrite vein system on Trevor Peak yielded a 3.0 metre interval grading 29.562 grams per tonne, 17.73 grams per tonne silver and 0.53 per cent arsenic (Assessment Report 27769). Two north-northeast lines about 150 metres apart, were sampled at 50 metre intervals over an airborne magnetic anomaly thought to reflect an underlying intrusive body similar to the Groat Stock. Thirty-one soil samples were collected. Sixty-four rock chip samples were collected from the five trenches.
In 2012, inversion of 1991 IP data by Teck defined a shallow, chargeability high in, or just north of, the known showings on the central lines with a high chargeability feature at depth to the east (Bailey et al., 2014, Teck Resources Limited, Unpublished Internal Report (as reported in Assessment Report 36505).
In 2016, Skeena Resources personnel spent ten man-days evaluating and prospecting the Trevor Peak showings of the GJ Project. A total of 33 rock and two soil samples were collected from the target.
Refer to GJ-Donnelly (104G 086) for related details.
