The Duc (South Zone) is located on a ridge separating the two south eastern arms of Uztlius Creek, approximately 5.2 kilometres east-northeast of the creek mouth on the Anderson River.
The area is underlain by Cretaceous aged pelitic sediments assigned to the Pasayten Group, which may be a non-marine facies equivalent of the upper part of the Jackass Mountain Group. The former group comprises sandstone, conglomerate, argillite and minor tuff occurring in a north-northwest trending belt extending across the entire 92H map area. These rocks are bound to the west by the Chuwanten fault and sediments belonging to the Jurassic Dewdney Creek Formation of the Ladner Group and to the east by the Pasayten fault and plutonic rocks of the Late Jurassic and Early Cretaceous Eagle Plutonic Complex. Local Early Tertiary stocks of intermediate composition intrude the sediments.
In the immediate area of the DUC occurrence (South zone), hornfelsed (tuffaceous) siltstone is in contact with porphyritic rhyolite. Although the rhyolite was thought to be part of a sequence of intermediate to felsic volcanics spatially located between the Pasayten sediments and granodiorites of the Eagle Complex, it is possible that it represents a boarder phase of one of the Tertiary aged granodiorite stocks recently identified in the area.
Adjacent to the rhyolite contact, fracture-controlled pyrite in the hornfels averages 5 to 10 per cent and highly fractured sections of hornfels have been argillically altered and host greater than five per cent pyrite. A breccia pipe, approximately 61 metres in diameter and hosting from 5 to 10 per cent pyrite as both fracture-fillings and disseminations, occurs within the rhyolite. Chalcopyrite with minor malachite and chalcocite occur in association with the pyrite. Sericitic alteration is widespread within the pipe and up to 61 metres to the east. Numerous quartz veinlets with or without accessory pyrite, chalcopyrite and/or sericite also occur in both the rhyolite and the hornfels adjacent to the pipe.
In 1975, three samples from this area returned the following assays (Assessment Report 5742):
--------------------------------------------------------SAMPLE LOCATION % Cu % MoS2 % Zn 67 metres across pipe 0.09 0.017 0.05 0-30 metres east of pipe 0.14 0.010 0.05 30-62.5 metres east of pipe 0.24 0.015 0.05 -------------------------------------------------------- |
In 1980, a rock chip sample (S105) of hornfels assayed 0.13 per cent copper and 0.005 per cent molybdenum (Assessment Report 8766).
In 2005, a rock sample (EBB05-R15) assayed 0.266 per cent copper (Assessment Report 28145).
Work History
In 1969, the area was staked as the Mod-Bar group of claims. An unknown amount of trenching and diamond drilling was reported to have been completed at this time.
In 1975, Quintana Minerals completed a program of geological mapping and rock sampling on the area as the Duc 1-24 claims.
During 1979 through 1982, JMT Services, on behalf of Utah Mines, completed programs of rock and soil sampling on the area as the Modbar and MB claims.
In 1984, Nicola Prospecting and Mining Syndicate completed a program of geological mapping and geochemical sampling.
In 2003, A. Walus completed a soil sampling program on the area as the Pilsudski 1-6 claims.
In 2005, Southern Rio Resources completed a program of geological mapping, rock and soil sampling and an ground induced polarization survey on the area as the East BB claims.
In 2012, Natan Resources completed a program of rock, silt and soil sampling on the area as the Highland South Copper property.
In 2013, Homegold Resources completed a photo-geological interpretation program on the area as the Uztlius 1 claim.
In 2017, Alojzy Walus completed a program of geological mapping and minor sampling on the area.
