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File Created: 24-Jul-85 by BC Geological Survey (BCGS)
Last Edit:  24-Jun-13 by George Owsiacki(GO)

Summary Help Help

NMI
Name WOLVERINE, GBR Mining Division Atlin
BCGS Map 104J012
Status Prospect NTS Map 104J04E
Latitude 58º 07' 13" N UTM 09 (NAD 83)
Longitude 131º 40' 41" W Northing 6445232
Easting 342259
Commodities Gold, Copper Deposit Types L03 : Alkalic porphyry Cu-Au
Tectonic Belt Intermontane Terrane Plutonic Rocks, Stikine
Capsule Geology

The Wolverine occurrence is located along the Golden Bear Mine Road, 1.5 kilometres south of the Hackett River, about 38 kilometres west-northwest of the community of Telegraph Creek.

Upper Triassic Stuhini Group volcanic rocks in the east and a Late Triassic and Early Jurassic quartz diorite to diorite pluton in the southwest are the two main rock types that underlie the Wolverine property. The volcanics form a north-trending belt of moderately west dipping (average 45 degrees) mafic tuffs, agglomerate, trachytic andesite, augite and feldspar porphyritic flows and mafic volcanics of uncertain character. Thin argillite units are interbedded with the trachytic andesite and mafic volcanics. The diorite is the northern portion of a large pluton which is located south of the property. Although mainly intermediate in composition, the intrusion includes tonalite or quartz diorite, monzodiorite and monzonite.

There are at least three fault trends characterized by zones of shearing and significant gouge development. Two trends host gold and copper mineralization and are probably coeval; the third is post-mineral. The most dominant structural feature is a 360 to 030 degree fault trend which follows the Wolverine Creek valley to the south. On the property, two major fault and several small shear zones follow the trend. The faults at the Wolverine showing are narrow, generally less than 1 metre wide, and tend to meander back and forth while maintaining the overall strike direction of the fault trend. Small lenses of massive pyrite and chalcopyrite mineralization occur in these faults.

The second set of faults trend 060 to 070 degrees and are thought to be an extensional set to the 360-030 degree trend at the showing. They occur as crosscutting joints, fractures and shears in the microcrystalline diorite. This trend contains most of the gold bearing, high sulphide disrupted veins found at the showing.

Late faults trend 160 to 180 degrees and displace mineralization in both 020 and 060 degree fault trends at the main showing.

Mineralization consists of pods or perhaps disrupted veins of massive pyrite and chalcopyrite which occur in fault gouge cutting a microcrystalline, marginal phase of the diorite. The largest segment of vein consists of massive pyrite and chalcopyrite and is approximately 8 metres long. It yielded from less than 34 to up to 154 grams per tonne gold over a 0.4 metre width. Several smaller segments of massive pyrite yielded grades up to 16 grams per tonne gold, however, others are only weakly anomalous or barren (Assessment Report 20945, page 17). The segments of veins have been found only within the trenched areas of the main showing.

Mineralization on the other parts of the property consist mainly of finely disseminated pyrite in volcanic rocks and pyrite, chalcopyrite, pyrrhotite or magnetite in intrusive rocks. Minor chalcopyrite stringers occur in altered volcanic rocks near the northern contact of a strongly magnetic diorite stock in the southeast corner of the property. A high grade grab sample from the stringers analysed 1.8 per cent copper (Assessment Report 20945, page 17).

The first recorded exploration work within the current claims occurred with the staking of the VI claims in 1971 by Sumitomo Metal Mining Canada Ltd. Geological mapping and soil sampling (522 samples) were conducted between 1971 and 1972. No further recorded exploration work occurred on the claims until 1988 when construction began on a 155 kilometre long access road into the Golden Bear Mine. During construction, the road was mapped and sampled as part of a 50/50 joint venture between Chevron Minerals and North American Metals, which resulted in the discovery of several showings including Wolverine. Chevron Minerals staked the Wolverine and Quick claims in November 1989 following the removal of the staking moratorium along the road corridor. During 1990, Chevron and North American Metals completed an airborne magnetometer and VLF-EM survey as well as grid controlled sampling and mapping. Also in 1990, Pass Lake worked their JC property off the southeast corner of Chevron and North American Metals Wolverine property, on ground that is partially covered by the GBR property claims of Amarc Resources in 2004. Pass Lake collected 7 silt samples and 12 rock samples. During 1991, North American Metals completed 13 line kilometres of grid on their Wolverine 5 claim to assist in soil sampling and geological mapping of a previous copper and gold in soil anomaly. A brief trenching program was performed. In April 2002, the Iskut North Syndicate staked the Wolverine 1 & 2 claims. No work was recorded on the claims and cash-in-lieu was paid in order to keep the claims in good standing. In April 2004, Amarc Resources optioned the Wolverine Property from the Iskut North Syndicate and acquired the surrounding GBR claims. Amarc conducted geological mapping, a soil sampling program (1286 samples) and 49 kilometres of induced polarization surveying that determined Triassic to Jurassic intrusive rocks on the property are unlikely to contain significant porphyry mineralization.

Bibliography
EMPR ASS RPT *20945, 22126, 27770
EMPR EXPL 2004-27
EMPR PF (104J General File - Claim maps 73M, 73 M-1, Dec. 1970)
EMPR OF 1996-11
GSC OF 707
GSC BULL 504
GSC MAP 9-1957; 21-1962; 1418A; 1712A; 1713A
GSC SUM RPT 1925, Part A, pp. 33A-99A
PR REL Amarc Resources Ltd., May 10, Jun.2, 2004

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