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File Created: 12-Mar-86 by Allan Wilcox(AFW)
Last Edit:  24-Jul-18 by George Owsiacki(GO)

Summary Help Help

NMI
Name TROUT, COPLEY LAKE, CUTOFF, CUT Mining Division Omineca
BCGS Map 093F067
Status Prospect NTS Map 093F10E
Latitude 53º 39' 09" N UTM 10 (NAD 83)
Longitude 124º 44' 26" W Northing 5946267
Easting 384965
Commodities Gold, Silver Deposit Types H05 : Epithermal Au-Ag: low sulphidation
Tectonic Belt Intermontane Terrane Stikine
Capsule Geology

The Camp, Camp (North), the original Discovery and the Cap Zones all occur inside the south-western corner and along the southern edge of two parallel northeast trending fault structures forming the boundary of a 3 kilometre long by 1.2 kilometre wide graben structure. The objective is to explore this structure to the northeast and test for epithermal precious metal mineralization at previously identified geochemical and geophysical targets inside and along the contacts of the graben boundary. Geological mapping suggests that gold and silver mineralization may either be ‘buried’ by a thin veneer of post mineral basalt rock or occur as near-surface silicified structures.

The Trout deposit is located 90 kilometres southwest of Vanderhoof, on the Cutoff property.

The region is underlain dominantly by Lower to Middle Jurassic volcanic and sedimentary rocks of the Hazelton Group. These assemblages are overlain by the Upper Cretaceous to Lower Tertiary Ootsa Lake Group, the Cretaceous Kasalka Group and Miocene plateau basalt. Intruding Lower Jurassic rocks in the northeastern part of the map sheet is a belt of granodiorite, diorite and quartz diorite plutons of the Lower Jurassic Topley intrusive suite. Felsic plutons of probable Cretaceous age intrude both Lower and Middle Jurassic Hazelton strata.

The Trout prospect is underlain dominantly by Upper Cretaceous to Lower Tertiary Ootsa Group (or possibly Kasalka Group) volcanics These rocks consist of red to brown andesitic porphyry flows, tuff and breccias, intruded by porphyritic felsic dikes. Several wide, over 20 metres, dark greenish to grey feldspar porphyry dikes and a light coloured rhyolite sill occur in the claim area. South of Swanson Creek more acidic (rhyolite, rhyodacite) ash flows and tuffs are located.

The Camp, Camp (North), the original Discovery and the Cap Zones all occur inside the south-western corner and along the southern edge of two parallel northeast trending fault structures forming the boundary of a 3 kilometre long by 1.2 kilometre wide graben structure. The objective is to explore this structure to the northeast and test for epithermal precious metal mineralization at previously identified geochemical and geophysical targets inside and along the contacts of the graben boundary. Geological mapping suggests that gold and silver mineralization may either be ‘buried’ by a thin veneer of post mineral basalt rock or occur as near-surface silicified structures.

The Discovery or Main zone crops out southwest of Swanson Creek and south of the camp in a swampy valley bottom. The exposure is a northeast-trending ridge of rock, 50 metres long, 12 metres across and about 4 metres high. It consists mainly of pyroclastic breccia and overlying polymictic conglomerate of the Kasalka Group. The shallow southwest-dipping contact between the breccia and conglomerate acted as a conduit channelling mineralizing hydrothermal fluids. The hangingwall is flooded with silica and the footwall is pervasively silicified for about a metre below the contact.

At the Discovery zone, bonanza style gold and silver mineralization is hosted in banded chalcedony and quartz - adularia stockworks, veinlets and breccias, in and around semi rounded clasts of relatively unaltered and brecciated andesite and conglomerates. These clasts and fragments are commonly rimmed by banded chalcedony and quartz adularia mixes. Thin section descriptions of mineralized breccia samples from the Discovery zone confirm two stages of brecciation both containing small 'bead-like' grains of native gold and argentite, laminated chalcedonic quartz, adularia with quartz and lesser sericite

Gold is found at two other areas known as the Camp and Camp North zones, located 150 metres northwest and 400 metres north of Discovery respectively. Gold and minor silver mineralization is hosted predominantly with silicified volcanic breccias, tuffs, conglomerates and clay altered zones. The volcanic rocks are rhyodacitic to trachytic in composition and are highly porphyritic. They are commonly but not always re-cemented or healed with pervasive silica, quartz veinlets and laminated silica and quartz and clay gouge. Disseminated pyrite is seen but is not overly abundant.

In the Camp (North) zone 2012 drill holes TR12-08 and 09 intercepted wide zones of low grade gold mineralization associated with a quartz healed porphyritic trachyte breccia unit. The zone outcrops immediately below thin overburden, measures 300 metres by 200 metres in diameter and varies in thicknesses from 16 to 27 metres. It has a moderate resistivity IP signature and remains open in three directions. Grades average 0.2 to 0.5 gram per tonne gold and 1 to 5 grams per tonne silver (Assessment Report 34163).

Trench sampling on the Discovery zone averaged 19.5 grams per tonne gold over 5 metres of banded quartz-chalcedony-adularia veining and stockwork in polymictic conglomerate (Assessment Report 16539). This zone is bounded on the south by an east striking, 65 degree north dipping fault. Rotary drilling of the Discovery zone resulted in an assay of 3.7708 grams per tonne gold over 20 metres and trench samples south of the Discovery zone assayed 8.2272 grams per tonne gold over 7 metres (Assessment Report 16733). A number of thin section photos were taken of samples from the Discovery zone trench (Property file Rimfire 821930-821940 and 821958).

WORK HISTORY
Precious metals were first discovered by Kerr Addison Mines Limited in 1984 when gold and silver values within a 60 by 300 metre zone were reported. Subsequent exploration by Kerr Addison and Welcome North Mines Limited including drilling in 1985, 1987 and 1990, targeted mainly on the Discovery zone, failed to trace the mineralization. In 1990, the property was optioned by Goldrite Resources and nine HQ holes (1050 metres) were completed on the Discovery and Camp zones. In 1992, Cogema Resources Inc. staked the ground and an airborne geophysical survey (VLF-EM, magnetics and resistivity) was flown in 1993. Eleven diamond drillholes totalling 1221 metres were completed in 1994.

In 1995, Phelps Dodge Corporation of Canada Ltd conducted a program of geological mapping, prospecting and rock sampling designed to explore for continuations of mineralization to the northeast and southwest of the Trout showing. A number of float and bedrock samples were found to contain elevated to highly anomalous gold and silver concentrations, often with anomalous lead, mercury and arsenic (Assessment Report 24147).

In 1996, Phelps Dodge conducted geological mapping and re-logging drillcore which provided a better understanding of the lithological and structural controls to mineralization in the Trout deposit. Bedrock samples collected along trend of the Discovery outcrop all contained anomalous concentrations of gold (122 to 15 880 parts per billion) and silver (1134 to 66435 parts per billion) over a total distance of 3.6 kilometres (Assessment Report 24833).

Work in 1997 by Phelps Dodge consisted of 615.1 metres of diamond drilling in four holes to test for extensions of the Trout mineralization along dip of the altered breccia-conglomerate unit. The best intersection, DDH 97-3, returned 262 parts per billion gold over 26 metres, consistent with low-grade mineralization in the perimeter of the deposit (Assessment Report 25275).

In 2004, Southern Rio Resources Ltd completed a total of 310.5 metres of diamond drilling in four holes. The results of the diamond drilling program show that the northeasterly trending, normal fault structure extends both downdip and along strike to the northeast from the Discovery Zone.

In 2010, an airborne magnetic survey was completed over the entire Trout gold-silver property, totalling 825 line kilometres of magnetic and electromagnetic data. The survey identified several lineaments that trend northwest, north and northeast from the Discovery zone area (Assessment Report 32229).

In 2012, a diamond drill program was conducted on the property. Ten holes were drilled into four target areas within the boundaries of the graben feature for a total of 2019 metres. Highlights of results included drillhole TR12-05 assaying 0.33 gram per tonne gold over 47.8 metres from the Camp zone and drillhole TR12-09 assaying 0.44 gram per tonne gold over 16 metres from the Camp (North) zone located 425 metres northeast (Stockwatch, March 26, 2013). Venerable Ventures used a large track mounted excavator to complete a total of 211 metres of trenching across eight profiles in the Camp and Camp (North) areas. Significant results from the Camp zone include 21.1 metres grading 0.41 gram per tonne gold in trench TR-B and 16.0 metres grading 0.13 gram per tonne gold in trench TR-E (Assessment Report 34163).

In 2015,Venerable Ventures Ltd. announced that, pursuant to a Mineral Property Purchase Agreement dated November 23, 2015 with Robert Carmichael and Landmark Geological Inc., it has completed the purchase of the Trout Property.

Refer to Stubb (093F 066) for further information on exploration in the area north of Knewstubb Lake by companies that held the Trout prospect at the same time, most notably Cogema and Phelps Dodge as the Cutoff property.

Bibliography
EMPR ASS RPT *13973, *16539, *16733, 23096, *24147, *24833, *25275, 26711, 27468, *32229, *34163, 34474
EMPR EXPL 1985-C293; 1987-C272-B45-46; 1992-69-106
EMPR FIELDWORK 1993, pp. 9-14; 1994, pp. 167-170, 177-191, 193-197
EMPR PF Rimfire (Unknown (1985): Sketch Maps of Backhoe Trenching - South Area - Trout; Kerr Addison Mines Ltd. (1985): Letter re: Checking - Trout; Unknown: Geophysical Survey Maps - Trout; Fortin, G. (1984): Soil Geochemistry Traverse Map - Trout; Chemex Labs Ltd. (1984): Certificate of Analysis - Trout; Potter (1985): The Trout Epithermal Au, Ag Property; Chemex (1985): Certificate of Analysis - Trout Property; Dept. of Mines (1983): Map showing Trout claims; Dept. of Mines (1984): Claims Map - 093F/10W - Trout; Unknown (1984): Figure 1 - Index Map - Distribution of challis volcanic suite, locations of map-sheets investigated, 1984; RGP (1984): Geology and Geochemical Map - Trout Area; RPG (1984): Initial Sampling and Mapping - Trout Claims; Unknown: Mineral Claims Map - Trout; Potter (1985): Fig. 6 - Schematic Section Map - Trout Claims; Potter (1985): Fig. 7 - Comparison of the Geochemistry of Trout Soils with that of Regional Eocene Volcanic Rocks; Kerr Addison Mines (1985): Proposed Work Location Map - Trout Claims; RGP (1984): Colour Geology and Geochemical Map - Trout Area; Unknown: Property Map - Trout Claims; Unknown: Fig. 7 - Comparison of Trout soils with that of regional Eocene Volcanic rocks, plus notes; Unknown: Drill Log - Trout; Unknown: Location Map of camp and drilling area - Trout; RGP (1985): Geology and Drilling Sketch Map - Trout Claims; Unknown: Trout Base Maps; Potter (1985): Interpretative Map Section No. 7 - Trout; Potter (1985): Geology and Diamond Drilling Locations - Trout; Potter (1984): Fig. 6 - Schematic Section - Trout; Potter (1985): Backhoe Trenching Samples Map - Discovery and South Zones - Trout; Unknown: Geology and Sampling Sketch Map - Trout; Unknown: Topography Sketch Map - Trout; Potter (1984): Sketch Map of Samples - Trout; Potter (1984): Sketch Map of Samples - Access Road Area - Trout; Potter (1984): Geology and Survey Lines Sketch Map - Trout; Potter (1984): Sketch Map of Area North East of Camp - Trout; Potter (1984): Sketch Map of Traverse JM25 - Trout Claims; Potter (1984): Sketch Map - Traverse JM25 - Trout; Potter (1985): Sketch Overlay Map - Trout; Potter (1984): Trout Claims, Traverse TN48, TM26 Airphoto maps; Potter (1984): Sketch Map of Discovery Zone - Trench 1 and 2 - Trout Claims; Potter (1984): Traverse Map JN61 - Trout; Potter (1984): Geology Near Trout Claims - Map; Potter (1984): Traverse JM27 and JN59 - Trout Claims; Potter (1984): Traverse JM29 and JN63 - Near Trout Claims; Potter (1984): Map of JN and JM Samples - Trout; Potter (1984): Compilation Report on the Trout Property; Potter (1984): Photos - Trout (description found in Document #821958); Potter (1984): Thin section photo of Au in argentite - Tr R-11 - Trout; Potter (1984): Thin section photo of gold-argentite intergrowth - Trout; Potter (1984): Thin section photo of Au - Trout; Potter (1984): Thin section photo of chalcopyrite - Trout; Potter (1984): Thin section photo of round Au grain - Trout; Potter (1984): Thin section photo of argentite, note scratches - Trout; Potter (1984): Thin section photo of round Au grain II - Trout; Potter (1984): Thin section photo of Au grain in open space with Fe oxide - Trout; Potter (1984): Thin section photo of argentite - Trout; Unknown (1991): Notes - Trout; Potter (1985): Diamond Drill Record - Trout 1; Welcome North Mines Ltd. (1987): Geochemical Soil Survey Map - Au and Ag - Trout; Chemex Labs Ltd. (1985): Certificate of Analysis - A8512745-001-A - Trout; Potter (1984): Thin section photo notes - Trout; Unknown: Grid Sketch Map - Trout; Fortin: Elevation List for Line Survey - Trout; Fortin: Trout Grid - Mag Data for line Base-Line West Check-Run et al; Kerr Addison Mines (1985): Sample Submittal and Analytical Requisition Form - Trout; Fortin (1984): Field Notes - Trout - Magnetometer Survey; Fortin, Davies (1984): Grid and Contour Data Field Notes - Trout; Davies (1984): Magnetometer Test Map - Trout; Nelson (1985): Final Report - Nechako Project - B.C. Gold Reconnaissance Project; Stevenson (1982): Report on the NG Property, Swan Property and Tia Property - Ootsa; Potter, Fortin (1984): BC Gold Regional Report of Activities)
GSC MAP 1424A
GSC MEM 324
GSC P 90-1F, pp. 115-120
GCNL #174, 1983; #36, 1985; #115, 1987; #22, 1990
PR REL Southern Rio Resources Ltd., Mar.21, Apr.2, 2003; Apr.7, 2004; Venerable Ventures Ltd., Mar.26, 2013; Nov.30, 2015
N MINER Oct.15, 2014

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