The Roadcut occurrence is located along or near the eastern shore of Bluff Lake.
Middle to Upper Triassic basaltic volcanics and sediments of the Cadwallader Group are intruded by tonalite and quartz dioritic dikes and intrusions of the Late Triassic Cadwallader plutonic suite. The area lies between two major northwest-striking faults, the Yalakom and Tchaikazan faults, along the northeastern margin of the Coast Plutonic Complex. A splay of the latter, the Niut fault, occurs just south of the area of interest (Geological Survey of Canada Open File 1163).
Locally, a fine-grained andesite with trace epidote and moderate silica alteration hosts 1 to 3 per cent fine chalcopyrite with 1 per cent pyrite in quartz-carbonate veining.
In 2012, a sample (Blu1) assayed 0.319 per cent copper, 0.089 per cent zinc, 12.9 grams per tonne silver and 2.02 grams per tonne gold (Assessment Report 33785). Previous sampling, the same year and a few hundred metres southwest along the lake, yielded values up to assayed 0.742 per cent copper, 2.4 grams per tonne silver, 0.036 gram per tonne gold and 0.01 per cent tungsten (sample BL017; Assessment Report 33599).
In 2019, Tchaikazan Resources Inc. collected 3 samples (POI2-4) from the Roadcut location. Values ranged up to 0.034 per cent copper, 0.42 per cent zinc, 0.129 gram per tonne gold and 1.25 grams per tonne silver (Assessment Report 38580).
Also in 2019, A mineralized sample was taken from a grey, hematite-stained rock outcrop, located about 600 metres east of the Roadcut showing. This is roughly the area of the Painted Bluff (092N NEW). The sample contained material from a 12-millimetre-wide quartz vein, within a 15-millimetre-wide shear cutting the outcrop, that hosted 2 to 3 per cent fine-grained pyrite and 1 to 2 per cent fine-grained chalcopyrite. The siliceous groundmass was reported to contain traces of bornite. The sample graded 0.76 per cent copper and 9.52 grams per tonne silver (Sample POI7, Assessment Report 38580).
WORK HISTORY
In 2007, Newmac Resources completed a 14-hole diamond drill program, totalling 2389.4 metres, on the area as the Bluff claims (Assessment Report 29526).
In 2012, Susan Rolston formed Tchaikazan Resources Ltd. to manage the expanding land holdings. Work since that time, has been undertaken on behalf of the company. The 2012 geochemical program consisted of rock sampling on three areas of the Bluff claim block. Notable samples were taken below the Bluff Lake Road in the area of Painted Bluff showing.
In 2019, rock geochemical and geological mapping was completed on the BLUFF, SOUTH BUTLER, BUTTS2, BLAKE S and BLAKE EXT claims by Tchaikazan Resources Inc. A total of 25 rocks were sampled of which 21 were sent for assay. Geologic mapping was carried out on 18 locations as the samples were collected. The program was successful in extending a copper-rich tourmaline breccia from its discovery outcrop to 500 metres to the north-west along a 330-to 340-degree trend along the Hayfield Bluffs. Sampling in the area of the Painted Bluff extended that mineralized zone some 150 metres to the south-east along a 135-degree trend. Also, 550 metres to the east of the Painted Bluff, the Slide zone (092N 069) sampling yielded a 0.136 per cent copper and 1.15 grams per tonne silver assay from outcrop that previously returned anomalous molybdenum values (Assessment Report 38580).
In 2020, Susan Rolston had a geophysical interpretation report completed on the Bluff Copper-Gold property (Assessment Report 39146). S.J.V. Consultants Ltd. was retained to evaluate historical geophysical data, including an airborne magnetic, VLF-EM and EM survey data, acquired by Aerodat Limited in 1989 and several vintages of induced polarization data gathered by various companies and contractors from 1990 to 2006. The airborne magnetic survey data was suitable for 3D inversion analysis and outlined several large, deep seated intrusive type bodies and structural trends. IP surveying, completed in 2004, 2006 and 2015 across the northwestern portion of the Bluff property was analysed with 2D inversions. The results suggested that a cluster of mineral showings along the eastern shore of Bluff Lake coincided with a high resistivity layer. The IP surveying detected a westerly dipping layer exhibiting elevated chargeability and moderate resistivity, lying below a sporadically conductive overburden layer along the northwesterly facing topographic slope east of Bluff Lake. The layer occurs as a northwesterly elongated ellipse, approximately 2.4 kilometres by 1.4 kilometres in size and contains 3 prominent, high chargeability zones within it. Vertical offsets of features within the layer suggest extensive faulting. Multiple drill holes within this zone have shown elevated Au, Cu and Zn assays both within and at the base of this layer.
Refer to Newmac (092N 055), Mac (092N 054) and Bu (092N 030) for more information on the work history of the Bluff claims/property.
