The Long B occurrence is located at an elevation of approximately 350 metres on a northeast-facing slope and approximately 1.8 kilometres east of Mount Grant on Texada Island.
Regionally, the area is underlain by undivided sedimentary rocks of the Mississippian to Lower Permian Nanoose Complex (Buttle Lake Group), limestone, marble and calcareous sedimentary rocks of the Middle to Upper Triassic Quatsino Formation (Vancouver Group) and basaltic volcanics of the Upper Triassic Karmutsen Formation (Vancouver Group). The sedimentary and volcanic rocks have been intruded by granodioritic rocks of the Early to Middle Jurassic Island Plutonic Suite.
Locally, the area is predominantly underlain by basaltic volcanic rocks of the Upper Triassic Karmutsen Formation (Vancouver Group). The basalts range from feldspar porphyritic to augite porphyritic with amygdaloidal and aphanitic varieties also present. Pillow basalt flows are common. Limestone occurs locally as narrow lenses with limited lateral extent.
The Long B occurrence is underlain by a composite granodiorite to quartz diorite stock in contact with altered Karmutsen Formation basalt, porphyritic basalt and basalt breccia. Chlorite and epidote alteration is common near intrusive contacts. Local areas of intense chlorite, kaolin and potassic alteration are common within the intrusion. Silicification is accompanied by abundant pyrite in lenses and heavy disseminations.
The volcanic/intrusive contact is well exposed at the Upper Creek showing, where it strikes 343 degrees with steep west dips. A large quartz vein occurs adjacent to the contact and is hosted in diorite. It strikes 022 degrees and dips 66 degrees northwest. The vein structure passes westward into volcanic rocks and becomes progressively less well defined. The vein is mineralized with massive chalcopyrite, pyrite and bornite and is exposed intermittently over a strike length of 75 metres.
A related quartz vein referred to as the Southeast vein is reported to be located approximately 450 metres further downslope and on strike with the Upper Creek showing.
In 1950, a rock sample from the Main (Upper Creek) zone is reported to have assayed 7.52 grams per tonne gold over 0.35 metre, and a sample from the No. 3 vein yielded 19.15 grams per tonne gold over 0.30 metre and a rock sample from the Southeast vein assayed 13.36 grams per tonne gold over a 20-centimetre width (Assessment Report 9264).
In 1980, chip samples from the Upper Creek zone are reported to have yielded values of up to 16.28 grams per tonne gold over narrow widths (Assessment Report 9264). The following year, three samples (3704 to 3706) from the zone yielded values from 1.06 to 2.60 grams per tonne gold with 17.8 to 40.4 grams per tonne silver (Assessment Report 9264).
In 1985, chip sampling of two trenches (lower and upper) on the Upper Creek zone yielded 2.56 and 21.51 per cent copper, 71.1 and 245.6 grams per tonne silver with 4.65 and 12.38 grams per tonne gold over 0.62 and 0.34 metre, respectively (Samples 80976A and 80977A; Assessment Report 13747).
In 1988, chip samples from the Upper Creek vein assayed up to 8.19 grams per tonne gold, 49.9 grams per tonne silver and 2.00 per cent copper over 0.30 metre each (sample XR32527; Assessment Report 18671). Also at this time, two rock samples (XR32429 and XR32430), taken approximately 650 metres to the east-southeast, from an area of diorite hosting pyrite assayed 0.35 and 0.24 gram per tonne gold, respectively (Assessment Report 18671).
In 2023, four rock samples (62358, 62360, 62361, 62364) from a historical trench, located approximately 650 metres to the east-southeast of the occurrence, yielded values from 0.11 to 0.37 gram per tonne gold with up to 0.22 per cent copper, 0.010 per cent tungsten, 4.1 grams per tonne silver and elevated rhenium and molybdenum values (Assessment Report 41233).
Work History
In 1950, D. W. Cochran completed a series of trenches on the Upper Creek area. In 1969, Falconbridge Nickel Mines Ltd. help the area as apart of the Airstrip Grid claims.
In 1980 and 1981, Carolin Mines Limited conducted a program of prospecting, geochemical (rock and soil) sampling, minor test pitting and geophysical (self-potential, magnetometer and electromagnetic) surveys on the area as the Long B claims. In 1985, Cariboo Gold Corp. conducted a program of rock and soil sampling on the Long B claims. In 1988, Echo Bay Mines entered into a joint venture with Rhyolite Resources Inc. who then completed a program of prospecting, geological mapping, trenching and geochemical (rock, silt, soil and heavy mineral) sampling on the area as the Angel property.
In 2001, Homegold Resources Ltd. conducted a geological mapping program on the area immediately northeast as the Longbeach claims. In 2005, Homegold Resources Ltd. conducted a program of geological mapping, test pitting, a 2.4 line-kilometre ground electromagnetic survey and 75.6 metres of Becker Hammer drilling in three holes on the Longbeach claims to the northeast. In 2007, Northstar Mining Ltd. conducted a 2257.6-hectare remote sensing program on the area as the Dude-Tak properties.
In 2013, Northstar Mining Ltd. conducted a 19 000-hectare remote sensing (spectral analysis) survey on the area as part of the regionally extensive Texada Island property. In 2014 and 2015, Northstar Mining Ltd. conducted a geological interpretation program to identify future target areas for exploration on the Texada Island property.
During 2022 through 2024 Quadra Coastal Resources Ltd. conducted programs of prospecting, geochemical (rock and soil) sampling, LIDAR data reprocessing and a total of 553.2 line-kilometres of airborne magnetic surveys on the Texada Island property.
