The TAKOM prospect is located approximately 2.5 kilometres south of the Megabuck zone (093A 078) on the Woodjam North property, approximately 11 kilometres south of the community of Horsefly and 52 kilometres east-northeast of the city of Williams Lake. It is coincident with a large IP chargeability anomaly, a magnetic anomaly and elevated copper values in soils.
The property is underlain by a succession of Triassic to Jurassic Nicola Group volcanics and sedimentary rocks intruded by the Late Triassic to Early Jurassic Takomane Batholith to the south. To the west, these units are overlapped by younger Miocene basalts. In the vicinity of the Woodjam property, the Takomkane Batholith typically consists of medium- to coarse-grained, white, equigranular granite to quartz monzonite. Mineral occurrences on the Woodjam property consist of near-surface copper- gold± molybdenum mineralization similar to that of large tonnage low-grade alkalic porphyry-type deposits typical of the Quesnel Belt. Deposits on the Woodjam North property are silica-saturated alkalic copper-gold porphyries with mineralization dominated by visible chalcopyrite, minor bornite, rare molybdenum and rare native copper.
At the Takom prospect, mineralization is hosted in hornblende-plagioclase-phyric dacite volcaniclastic units that overly a coarse-plagioclase-phyric andesite. Copper mineralization occurs as chalcopyrite, lesser bornite and rare native copper. Mineralization occurs within magnetite-actinolite-chalcopyrite stockwork veins and later quartz-carbonate-chalcopyrite (± bornite) veins. Chalcopyrite and pyrite also occurs as disseminations. Rare molybdenite, native copper and bornite are also observed.
Outcrop in the Takom zone is sparse aside from three trenches established by Archer Cathro & Associates in 1986 and later logging road cuts. The zone occurs within partly brecciated augite and feldspar porphyry flows and volcaniclastics containing patchy chlorite and argillic alteration, cut by quartz-carbonate veins. Volcanic units are invariably hornfelsed and, in one location southeast of the showings, tourmaline has locally replaced up to 75 per cent of the rock. Grab samples with chalcopyrite were reported.
Significant shearing is evidenced in the vicinity of known mineralization exposed by the 1996 trenches. A large coherent soil copper anomaly (500 by 1200 metres) has been outlined in surface till. A horseshoe-shaped induced polarization chargeability anomaly measuring 1 by 2 kilometres extends to the south, east and west of areas of known mineralization. Four holes totalling 663 metres were drilled in the Takom zone from 1973 to 1977. A 10.6-metre intercept grading 1.27 grams per tonne gold and 0.13 per cent copper was obtained from Exploram's hole 74-3, where granodiorite and hornblende quartz-diorite intrude the volcanics (Assessment Report 27735).
The historical to 2008 drill programs, indicated that copper ±gold mineralization is present, and near-surface, at Takom. Significant intercepts include: drill hole WJ84-03 yielding 77.72 metres grading 0.41 gram per tonne gold and 0.110 per cent copper; and drill hole WJ08-87 yielding 82.38 metres grading of 0.57 gram per tonne gold and 0.326 per cent copper. During the Gold Fields drill programs in 2009 and 2010, the mineralized zones were expanded. Significant intercepts include drill hole TK09-01 yielding 186 metres of 0.41 gram per tonne gold and 0.36 per cent copper; and TK10-12 yielding 111.9 metres of 0.51 gram per tonne gold and 0.29 per cent copper (Assessment Report 31545).
Significant results from the 2012 drill program include 221.29 metres averaging 0.2 per cent copper and 0.23 gram per tonne gold, comprising 32.79 metres of 0.35 per cent copper and 0.61 gram per tonne gold, and 35 metres of 0.4 per cent copper and 0.45 gram per tonne gold (Press Release, Consolidated Woodjam Copper Corporation, January 21, 2013). Drill hole TK12-34, located to test the geometry and width of the main mineralized zone had three significant intersections, the best being 82 metres (from 76 to 158 metres downhole) grading 0.45 gram per tonne gold and 0.33 per cent copper (Assessment Report 33805).
A National Instrument 43-101 compliant resource estimate for the Takom zone was released in May 2013. The inferred resource was calculated as 8.3 million tonnes grading 0.26 gram per tonne gold and 0.22 per cent copper with 1.93 tonnes (68.2 thousand ounces) of gold and 18 007.62 tonnes (39.7 million pounds) of copper (Press Release, Consolidated Woodjam Copper Corporation, May 15, 2013).
WORK HISTORY
Exploration first began in the area in the 1800s. The first mineral occurrence discovered on the Woodjam property was the Megabuck zone, discovered in the late 1960s in a small hand trench on the northern slope of a small knoll. Between 1966 and 1967, Helicon Exploration Limited and Magnum Consolidated Mining Company completed induced polarization and geological surveys in the area. From 1973 to 1977, Exploram Minerals Limited conducted an exploration program consisting of induced polarization and magnetic geophysical surveys, soil samplings and 1056 metres of drilling on the Megabuck and Takom zones.
In 1983, Placer Development Company optioned the claims in the Megabuck zone and conducted surface geological, geochemical and geophysical surveys and completed 15 diamond drill holes totalling 1266 metres. At the same time, Archer Cathro & Associates Limited staked the Ravioli claims adjacent to those held by Placer Development and conducted soil sampling to the west and south of the Megabuck occurrence. In 1984, Rockridge Mining Corporation optioned the claims from Archer Cathro and completed a soil and rock sampling program. In 1986, Big Rock Gold Limited optioned the claims from Rockridge as well as claims over the Takom zone and southern portion of the Megabuck zone. Big Rock carried out a trench sampling program, completing two trenches in the Megabuck zone and three in the Takom zone. In 1990, Auspex Gold Limited carried out a soil geochemistry program over the Takom zone. The claims were reassembled by Noranda Exploration Limited in 1991 and an exploration program carried out the following year consisted of airborne geophysical surveys, reconnaissance mapping and excavator test-pitting over the Megabuck and Takom zones; however, Noranda terminated the options later that year.
In 1998, Wildrose Resources Limited (now known as Rose Resources Limited) began acquiring property in the area. The following year, the property was optioned to Phelps Dodge Corporation of Canada Limited, who further expanded the property, conducted reconnaissance mapping and prospecting and completed four diamond drill holes totalling 198 metres before withdrawing from the project for corporate reasons. In 2001, Cariboo Rose granted Fjordland Exploration Incorporated a 60 per cent option on the property, forming the Woodjam Joint Venture. From 2001 to 2005, the Woodjam Joint Venture ran exploration programs across much of the eastern region of the Woodjam property.
Fjordland Exploration staked additional ground surrounding the existing claims in 2006, effectively doubling the size of the property. Exploration work that year consisted of one diamond drill hole totalling 526.4 metres in the Takom zone, one diamond drill hole abandoned at 136.3 metres in the Megabuck East zone and 21 diamond drill holes totalling 7654.7 metres, intended to test the southern downdip extension of known mineralization in the Megabuck zone. In 2007, Fjordland and Cariboo Rose carried out induced polarization and ground magnetic geophysical surveys, expanding the existing grids to the south and outlining a large induced polarization chargeability anomaly. Drill testing of the anomaly led to the identification of the Southeast zone mineralization on the Woodjam South property. Four drillholes were completed on the Southeast zone totalling 1157.07 metres, in addition to one drillhole (370.9 metres) on the Megabuck zone and three drillholes (859.9 metres) on the Takom zone. In 2008, work continued with induced polarization and ground magnetic geophysical surveys and a three-phase diamond drill program of 20 drillholes totalling 7574.6 metres. Four drillholes totalling 1176.6 metres were completed in the Takom, Deerhorn and Megabuck East zones on the Woodjam North property.
In 2009, the Woodjam property was divided into the Woodjam North and Woodjam South properties. Gold Fields Horsefly Corp. optioned the Woodjam North property, followed by the Woodjam South property in 2010. The property became jointly held by Gold Fields and Woodjam Copper Corporation, an amalgamation of the Woodjam interests held by Fjordland Exploration and Cariboo Rose Resources Limited. A two-phase exploration program was carried out in 2009. Phase one consisted of geological mapping, prospecting, 9859 line kilometres of airborne magnetic survey, silt sampling (42 samples) and, within the core area around the Megabuck zone, ground geophysical surveys, soil sampling (4216 samples), relogging of Megabuck core, petrographic work and environmental and archaeological studies. Phase two of exploration consisted of 14 diamond drill holes totalling 4538.29 metres. Results from the drill program expanded the known extent of mineralization in the Takom and Deerhorn zones. In 2010, exploration consisted of geological mapping and prospecting, induced polarization/resistivity and ground magnetic geophysical surveys, a surface geology mapping survey over the core area of the Woodjam North property and the Southeast zone of the Woodjam South property, the collection of 200 rock samples, 532 soil samples and 19 silt samples, and the completion of 55 diamond drill holes totalling 14 613.41 metres.
Exploration in 2011 consisted of ground magnetic, airborne magnetic and gravity geophysical surveys and a 57-hole drill program totalling 17,195.57 metres. A 42-hole infill diamond drill program focused on the mineralization in the Southeast zone. Results from the drilling confirmed the presence of continuous copper-molybdenum±gold mineralization and enabled the completion of a geological model and an estimation of inferred mineral resources. Additional exploration on the property included three unsuccessful reverse circulation drillholes and 12 diamond drill holes located around and to the south of Cossack Lake (southwest region of the Woodjam property). An airborne magnetic survey was flown over parts of the Woodjam South property and a gravity geophysical survey was completed over the Woodjam North and Woodjam South properties.
A total of 3,347.94 m in eighteen holes were drilled at Takom between 1974 and 2008, by Exploram Minerals Ltd., and the Wildrose and Fjordland, Woodjam Joint Venture. In 2009 and 2010, Gold Field Horsefly drilled twenty-eight holes (8,226.18 m) in Takom, expanding this target zone.
In 2012, seven diamond drill holes were completed in the Takom zone, totalling 2069.5 metres (Assessment Report 33805).
In 2022, a soil sampling program south of Horsefly road and a 2,999 line-kilometre, high resolution, helicopter-borne magnetic survey was conducted over the main mineralized corridor at Woodjam (Assessment Report 40993).
In December 2022, Consolidated Woodjam Copper Corp. became a wholly-owned subsidiary of Vizsla Copper Corp. (PR REL Vizsla Copper Corp. Dec. 13, 2022). Two diamond drill holes were completed on the Takom zone in 2023 following an airborne electromagnetic (ZTEM) survey over targets on the Woodjam property (Assessment Report 41597).