Till sampling survey, NTS 64C/1, 2, 7, west central Manitoba, 1986.
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In 1986, 128 till samples were collected in an approximate area of 1200 km2 in the Wheatcroft Lake area, Manitoba. The sampling was carried out to more clearly outline an arsenic anomaly found by regional till sampling in 1984 in NTS 64C (see GSC Open Files 1204 and 2118).
Samples were collected from local high altitude ground. Sample holes were hand dug to a depth between 15 and 120 cm, with an average depth about 40-50 cm. Samples were taken below the depth of leaching as often as possible to maintain consistency in the sampled material. Most samples are considered to be B-horizon samples except those taken below Lake Agassiz clay. Sampling density was approximately 1 sample per 9 km2. At 6 sites, samples were taken in vertical sections, including both till and overlying Lake Agassiz clay.
A summary of the work can be found in GSC Current Research, Part C, Paper 88-1C. The data can be found in McGill University M.Sc. thesis (Suttner, 1989).
Paper report with data lists.
<0.002 mm by AAS after hot HCl-HNO3 (1:3) digestion for Cr, Mn, Fe, Co, Ni, Cu, Zn, Mo, Ag, Cd and Pb As by colourimetry after a HNO3-HClO4 leach. <0.063 mm fraction by INAA for As and Au.
Geochem Maps Available:
Contour plots show dispersal of selected elements.
43 rock samples crushed and analyzed by INAA. Pebble counts (2.0-5.6 mm fraction). HMC analyzed geochemically for Au.
|1||DiLabio, R.N.W., Kaszycki, C.A. (1987). Drift prospecting program (project C.4.1.2). I n Manitoba Energy and Mines, Minerals Division, Report of Field Activities 1987, p. 173. (more)|
|2||Kaszycki, C.A. (1988). Drift prospecting: northwestern Manitoba. In Manitoba Energy and Mines, Minerals Division, Reprot of Field Activities 1988, p. 177. (more)|
|3||Kaszycki, C.A., Suttner, W., DiLabio, R.N.W. (1988). Gold and arsenic in till, Wheatcroft Lake dispersal train, Manitoba. In Current Research, Part C. Geological Survey of Canada, Paper 88-1C, p. 341-351. (more)|
|4||Suttner, W.C. (1989). Glacial dispersal of gold and arsenic from an unknown source near Wheatcroft Lake, Manitoba, including reference to overlying Lake Agassiz clay. M.Sc. thesis, McGill University, Montreal, PQ, Canada, 120 p. (more)|
|5||McClenaghan, M.B., Peter, J.M. (2013). Till geochemical signatures of volcanogenic massive sulphide deposits in glaciated terrain: a summary of Canadian examples. Geological Survey of Canada, Open File 7354, 36 p. (more)|
|1||1983-1989||Northwestern Manitoba till sampling surveys, 1983-1988 (more)|
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The geographic extent of the survey is defined by the following polygons:
Covers parts of NTS 64C/1, 2, 7 in west central Manitoba. It comprises approximately 1200 km2 and is roughly centred around Wheatcroft Lake, southwest of Granville Lake.
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