The Su property is underlain by Jurassic Hazelton Group volcanics and sediments. A maroon, amygdaloidal andesite unit occurs in the northwest part of the property. A grey, andesite and rhyolite clast, calcite cemented breccia occurs to the southeast of the andesite unit. It appears to strike north-northeast to northeast and dips 25 to 60 degrees west with tops to the east.
Near the contact of these two units, in a fine grained bed of the breccia, a showing of pyrite is exposed. It consists of a matrix with 20 to 30 per cent, very fine grained, probably syngenetic, pyrite. Samples from this showing have assayed up to 0.6 per cent zinc and 0.044 gram per tonne silver (Assessment Report 18177).
About 350 metres to the northeast, an outcrop of coarse breccia contains minor sphalerite and galena associated with the calcite matrix and veinlets. Grab samples assayed up to 2.9 per cent zinc and 0.9 per cent lead (Assessment Report 18177).
In general, the rocks encountered in the 1992 drill hole represent a series of turbidite units (probably Nilkitkwa formation) that were deposited contemporaneously with volcaniclastic rocks apparently directly related to submarine volcanism. A few massive sulphide clasts and a few isolated siltstone fragments are also found in these rocks. Some clasts contain disseminated and/or fracture filling pyrite, and disseminated galena was noted in a few grains of volcanic sandstone. Interclast pyrite is common in places, and in some sections the clast matrix is apparently silicified. A felsic volcaniclastic section that carries locally abundant (plus 10 per cent) interclast sulphides, including pyrite and lesser amounts of sphalerite and galena. A 10 centimetre sample of core from this rock yielded greater than 1 per cent zinc (detection limit), 0.059 per cent lead, 21.3 grams per tonne silver and 0.019 per cent copper and 0.005 per cent cadmium (Assessment Report 22494).
WORK HISTORY
In 1965, an electromagnetic survey was completed on the Poi claims, 4 kilometers to the north east of the Su property near the Fulton River. No conductors were found.
In 1973, Anthony L'Orsa (P.Geo.), discovered small amounts of pyrite, galena and sphalerite in outcrop in the Su area. L'Orsa staked the area in 1987. There is no evidence of previous work. Mineral exploration completed since early 1987 on the Su claims includes prospecting, local soil and silt sampling, line cutting, mapping, trenching, and geophysical surveys. Noranda held the Su in 1988 and collected 14 rock, 8 silt and 191 soil samples. They also conducted 7.2 kilometres of ground magnetic and electromagnetic (VLF) surveying.
In 1992, Anthony L'Orsa drilled one diamond drill hole, 88.09 metres in length, in order to test a previous IP anomaly generated by sulphide minerals in volcaniclastic rocks in a turbidite sequence thought to be part of the Lower Jurassic Nilkitkwa formation.
In 2012, an aeromagnetic program was conducted over the Flute and Lannac (093L 190, 191, 243, 338) properties having a total area coverage is 813 square kilometres. Total survey line coverage is 4,444 line kilometres (Assessment Report 33032, 33707F). The Su occurrence was (barely) covered by this survey.
Refer to O (093L 163) and THEZAR 75 (WEST) (093L 190) for further details of the Lennac and Flute properties.
