The Vimy (Dot) mine is located at an elevation of approximately 1080 metres on the east side of an unnamed stream which flows southward into Broom Creek.

The area is underlain by the Upper Triassic to Lower Jurassic Guichon Creek batholith which intrudes Upper Triassic Nicola Group volcanic rocks in the east. North of the property, near Gypsum Mountain, the intrusive rocks are unconformably overlain by Eocene Kamloops Group volcanic flows.

The area is underlain primarily by the Guichon variety of the Highland Valley phase of the Guichon Creek batholith. This unit is comprised of fine to medium-grained quartz monzodiorite to granodiorite. Outcrops of coarser grained granodiorite (Chataway variety) are found in the vicinity of the mine. Younger porphyry intrusions are also present. The granodiorite is strongly altered (chlorite, sericite and kaolinite alteration mineralogy).

Mineralization is structurally controlled. Disseminations and veinlets of bornite, native copper, chalcocite, chalcopyrite and minor covellite and cuprite are concentrated in a zone of intense brecciation and alteration at the intersection of north and northwest trending faults. Intense alteration adjacent to mineralization consists of potassium feldspar, sericite, kaolinite, chlorite, carbonate and oxidation of specular hematite. Associated silver values range up to 6.8 grams per tonne.

The two main historic occurrences on the property are designated as the Upper Vimy (Northwest) and Lower Vimy. The main Upper Vimy (Northwest) copper zone, defines a northwest trending and steeply to sub-vertical northeast dipping structural zone of altered granodiorite containing disseminated, fracture and vein controlled native copper, chalcocite, bornite, chalcopyrite, and malachite mineralization. Surface trenches and drill holes have traced the zone for approximately 270 metres along strike with a width of up to 55 metres and a depth of 200 metres. The zone strikes at 140 degrees. The deposit remains open along strike and to depth.

This zone shows potassic, phyllic, argillic, and propylitic alteration typical of porphyry-style systems. Potassic and argillic alteration may be pervasive or fracture controlled. Phyllic alteration occurs as localized silica flooding and quartz veins in association with coarse-grained sericite along vein contacts. The hanging wall of the Northwest Zone is generally defined by unaltered and unmineralized granodiorite while the footwall is defined by a lack of mineralization but the persistence of potassic±argillic alteration.

In 1981, Indicated reserves of the main copper zone were estimated at 819,188 tonnes grading 0.35 per cent copper (Assessment Report 9699).

Previous drilling by various companies and drilling by Zappa Resources Ltd. in 1992 are reported to have outlined a preliminary geological resource of 2.93 million tonnes grading 0.5 per cent copper (Assessment Report 22839).

The Lower Vimy zone, located approximately 200 metres east of the Upper Vimy (Northwest) zone, has been traced on surface for approximately 100 metres and is estimated to be approximately 25 metres wide. The zone contains small high-grade lenses of chalcopyrite, bornite and copper carbonates in narrow shears.

The Southeast zone is a new discovery by Alhambra Resources Ltd. in 1996 and is located about 200 metres along strike from the Northwest zone. The zone of bornite-rich porphyry copper mineralization was discovered beneath 20 to 30 metres of overburden. It has been intersected by over a strike length of 550 metres, up to 100 metres in width and to a depth of 205 metres. The zone remains open to the southeast and down dip. The zone is hosted by a fine to medium-grained granodiorite of Guichon or Chataway variety. Alteration consists of moderate to intense phyllic and intense pervasive potassic zones which are associated with the better mineralization. Bornite is predominant over chalcopyrite and is associated with specular hematite in many intersections. There are fairly large zones of gouge and sericitized fault breccia in some of the holes, however, it is too early to know which way these faults are trending. The degree of alteration suggests this may be a fairly large mineralizing system (M. Cathro, personal communication, 1997).

In 1996, the best hole, #15, cut 119.8 metres grading 0.58 per cent copper which included a high-grade zone of about 40 metres with numerous assays in the 1-3 per cent copper range. Local kicks of gold (to 2.49 grams per tonne), silver (to 149.8 grams per tonne) and molybdenum (to 0.29 per cent molybdenum over 5 metres in hole 11) occur but are very sporadic (M. Cathro, personal communication, 1997).

The Copper zone, identified by diamond drilling in 1997, is located approximately 100 metres west of the Southeast zone. Drilling intersected native copper as disseminations and fracture coatings in oxidized and unoxidized porphyry, representing an apparently very-low sulphur, oxygenated porphyry system. The mineralized zone has been tested by drilling along strike for approximately 140 metres with an apparent width of 68 metres and to a depth of 130 metres. The zone remains open at depth and along strike to the southeast. Drill intercepts were up to 119.8 metres grading 0.58 per cent copper (Exploration in BC 1997, page 37).

Work History

During 1920 through 1927, the Upper Vimy occurrence was developed by a 50 metre long shaft and a short crosscut west of the Gypsum Mountain road, while the Lower Vimy, located approximately 300 metres to the east, was developed by two short adits. A small shipment of high-grade ore was made in 1925.

In 1956 and 1957, Northwest Explorations Ltd. is reported to have stripped and drilled the main showings.

In 1965, Bralorne Resources competed a program of geological mapping, a 95.0 line-kilometre induced polarization survey and a 107.2 line-kilometre ground magnetic survey on the area as the Dot, Rose, She and Wiz claims. The following year, a program of soil sampling was completed.

In 1968, King Resources Co. completed a program of geological mapping on the area as the Ant, In, Jay, Len, Rex, Rob, Sho, T.D.M. and Wiz-Dot claims of the Chataway property.

In 1972, Aselo Industries Ltd. completed a 47.7 line-kilometre ground magnetic survey on the area. In 1979, Lawrence Mining Corp. completed a 5.8 line-kilometre induced polarization survey on the Vimy claim.

In 1981, Lawrence Mining Corp. completed an induced polarization survey and magnetometer survey to the north and south of the known occurrences. Later that year, 20 diamond drillholes, totalling 3400.4 metres, and 30 percussion drill holes, totalling 2301.2 metres, were completed. This work identified the Northwest zone of the Upper Vimy occurrence.

In 1992, Zappa Resources Ltd. completed six reverse circulation drill holes, totalling 638.5 metres, to further delineate the Northwest zone over a 255 metre strike length and to a depth of 100 metres. Drilling is reported to have intersected copper-bearing mineralization that graded 0.33 per cent copper over 73.15 metres in hole 92RCD-02, 0.91 per cent copper over 76.2 metres in hole 92RCD-03 and 0.37 per cent copper over 64.01 metres in hole 92RCD-04 (Assessment Report 22839).

in 1996 and 1997, Alhambra Resources Ltd. completed programs of diamond drilling with 21 holes, totalling 4399 metres, being completed. This work identified the Southeast zone and adjacent Copper zone both of which are along strike to the south east of the Upper Vimy occurrence.

In 2006, Alhambra Resources completed 21.0 line-kilometres of induced polarization, magnetic and electromagnetic (VLF) surveys centered on the Northwest and Southeast zones. Further programs of geophysical surveys, geological mapping, geochemical sampling and 14 diamond drill holes, totalling 3097.4 metres, were completed in 2007 and 2008 by Dot Resources Ltd. Drilling on the zones yielded intercepts including 0.50 per cent copper over 31.00 metres in hole DOT-07-NW-03 on the Northwest zone and 0.38 per cent copper over 47.80 metres in hole DOT-07-SE-01 on the Southeast zone (Assessment Report 29969).

In 2009, a small induced polarization survey was conducted west of the main zones and outlined new conductors in an area referred to as the West zone. Later that year and in 2010, fifteen diamond drill holes were completed on the Southeast, Northwest and West zones.

In 2010, Dot Resources released updated resource estimates of 5,330,000 tonnes indicated grading 0.45 per cent copper, 3.28 grams per tonne silver, 0.05 gram per tonne gold and 0.006 per cent molybdenum and 4,280,000 tonnes inferred grading 0.46 per cent copper, 1.99 grams per tonne silver, 0.02 gram per tonne gold and 0.004 per cent molybdenum using a 0.2 per cent copper cut-off grade (Northern Miner News Release January 5, 2010).

In 2013, Dot Resources completed a 12.0 line-kilometre ground electromagnetic survey on the Dot property. The following year, a program of geological mapping was completed on the area immediately east of the occurrence.

In 2019, Greg Thomson completed a minor soil sampling program on the area as the Dot property.