The Summit (LMT and UMT zones) prospect is located on a ridge approximately 6 kilometres north west of the Marshall Creek’s mouth on the Carpenter Lake.
The area is underlain by phyllite, argillite, chert and minor recrystallized limestone and andesitic greenstone of the Mississippian to Jurassic Bridge River Complex (Group). Locally, sulphides are concentrated along the sheared contact between foliated phyllite and argillite and massive andesite.
The LMT zone, located at 1402 metres elevation, strikes northeast with a shallow dip, ranges from 10 to 50 centimetres wide along a 30- metre strike length, and is offset by numerous post-mineralization normal faults. The massive sulphides include pyrite, pyrrhotite, arsenopyrite, sphalerite and galena with minor bornite and stibnite, set in chalcedonic quartz. In 1981, an average of 7 samples from the mineralized zone yielded 7.6 grams gold per tonne, 26 grams silver per tonne and 5.54 per cent zinc (Assessment Report 10695). In 1987, grab samples of the vein from the upper adit assayed from 3.6 to 10.8 grams per tonne gold (Assessment Report 17958). In 1989, a chip sample across a mineralized vein near the end of the upper adit assayed 10.9 grams per tonne gold, 41.0 grams per tonne silver, 0.35 per cent lead and 3.4 per cent zinc over 1.7 metres (Assessment Report 19936).
The UMT zone is considered an extension of the LMT shear, at 36 metres lower elevation. In 1981, samples taken from mineralized pods in the shear zone assayed up to 4.9 grams gold per tonne, 39.8 grams silver per tonne and 8.45 per cent zinc (Assessment Report 10695). In 1987, grab samples of massive sulphides from the lower adit assayed from 8.2 to 40.6 grams per tonne gold (Assessment Report 17958).
Another mineralized area, located 30 to 40 metres south of the lower adit, consists of a 1.5 to 1.8- metre wide shear zone, striking 110 degrees and dipping 30 degrees, hosting stringers and disseminated sulphides. In 1987, a 1.05 metre chip sample across the centre of the zone assayed 9.8 grams per tonne gold, while other chip samples from the hanging wall and foot wall zones assayed up to 12.2 and 31.5 grams per tonne gold, respectively (Assessment Report 17958).
A trench, located 200 metres north west of the adits, is reported to expose another mineralized shear zone. In 1987, a grab sample from the trench assayed 6.4 grams per tonne gold (Assessment Report 17958).
In 1989, trenching on geochemical anomalies identified at least three other zones of mineralization. The “North” anomaly zone consists of an oxidized feldspar porphyry dike hosting gold values. A 1.4- metre sample from a trench assayed 1.0 gram per tonne gold (Assessment Report 19936). The “North East” trenches yielded values up to 27.9 grams per tonne gold from a possible continuation of the vein from the main drift (Assessment Report 19936). The “Extreme South” zone contains short tensional veins which are faulted off or pinch out and are hosted by cherty argillite of the Bridge River Group. Grab samples assayed up to 25.7 grams per tonne gold (Assessment Report 19936).
In 1990, trenching exposed a mineralized quartz vein on the north east side of the ridge. The vein strikes 075 degrees with a near vertical dip and is mineralized with pyrite, arsenopyrite, galena and sphalerite. Grab samples from the vein yielded up to 26.6 grams per tonne gold, while a 2- metre channel sample from a trench yielded 10.2 grams per tonne gold (Assessment Report 21159).
In 1994, diamond drilling on the “A” zone, located near the adits, and “F” zone, located approximately 1.2 kilometres to the east- north east, yielded up to 88.0 grams per tonne gold with 0.80 per cent zinc over 0.75 metre and 19.3 grams per tonne gold with 2.50 per cent zinc over 0.45 metre, respectively (Assessment Report 23627).
In 2004, sampling of the Adit zone trenches yielded up to 11.77 grams per tonne gold over 1.00 metre of oxidized quartz vein material exposed in trench 7 (Sample MMR3; Moore, M. (2007-07-09): Technical Review Gold Summit Project).
In 2011, a chip sample (MMR11-01) from a trench exposing an oxidized quartz vein in argillite assayed 3.08 grams per tonne gold and 11.0 grams per tonne silver over a true width of 0.35 metre (Moore, M. (2011-09-05): Technical Review - Gold Summit Project).
Older reports on the Summit property describe a 2.5-metre basic dike crossed by arsenopyrite and pyrite- bearing quartz stringers, cutting north across quartzites, argillites and chloritic volcanics. Further up the hill is reported workings exploring an irregular 5- centimetre quartz vein containing in places 40 centimetres of solid pyrite, arsenopyrite, galena and sphalerite.
During the early 1900’s a number of tunnels or adits were reportedly driven on the property in conjunction with the nearby Marshal Creek (MINFILE 092JNE085) occurrence. In 1981 and 1982, Quinto Mining Corp. completed programs of rock and soil sampling, geological mapping and combined airborne and ground geophysical surveys on the area as the Marshall Ridge project. During 1987 through 1994, Gold Summit Mines completed programs of soil and rock sampling, trenching, geological mapping, an airborne geophysical survey and six diamond drill holes, totalling 984.0 metres, on the area as the Summit property. During 2007 through 2010, Madman Mining Ltd. and Chi Cha Na Mining completed programs of rock and soil sampling on the area. In 2011, St. Elias Mines Ltd. and Havilah Mines Ltd. completed a program of soil and rock sampling and ground geophysical (magnetic, electromagnetic and induced polarization) surveys on the area.
