The rocks studied in this thesis have been the subject of considerable discussion as to their original nature. J. D. Bateman of the Geological Survey of Canada considers that they are of igneous origin whereas others believe that they are metamorphosed sediments. It was thought that a petrographical study might provide some information that would help to decide the problem and it was with this object in view that this study was undertaken. Cree Lake, in the vicinity of which the rocks occur, is situated 2 miles North of the Sherritt-Gordon Mine, Manitoba, which lies about 20 miles east of the Manitoba-Saskatchewan border and 120 miles northwest of the north end of L. Winnipeg. The Sherritt-Gordon copper-zinc ore deposit is a very remarkable deposit in that it is a tabular body with a total outcrop length of 16,000 feet and an average width of 15 feet, thus being one of the longest exposed ore bodies in the world. The rocks in question outcrop around Found Lake which lies very close to and just to the southeast of Cree Lake (see Map 44-4) and fall into two groups; firstly, thos that outcrop south of Found Lake in an area which was mapped by J. D. Bateman as an oval body of oligoclase granite (Map 44-4, No. 12) about one mile long and 1/4 mile wide and secondly, those that outcrop as three smaller masses north of Found Lake but enclosed by the arms of Cree Lake and mapped as anorthositic gabbro (Map 44-4, No. 11). [...]

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The object of this paper is a study of the geology and the commercial occurrence of gold on the Scotia Gold Property, number two. This study is based in part on field observations which the writer made during the summer 1937 under the auspices of the Canadian Geological Survey, and in part on laboratory investigations which are based on the study of both, the thin sections of rock and the polished opaque sections of the ore. The property or the company described in this report is situated in southeastern Manitoba, in the Rice Lake Mining Area, approximately 150 miles northeast of the city of Winnipeg and within ten miles of the Ontario-Manitoba boundary and in the Long-Lake-Beresford-Lake section. The group of claims comprising this gold prospect is located in Township 22, Range 16. East of the Principal Meridian, as shown in the index map (figure 1). The surrounding formations and including those found on the property are known as the gold-bearing quartz veins of the Beresford-Rice lakes area lying in the basins of the Manigotogan and Wanipigow rivers. This complex belt or sediments and volcanics is Pre-Cambrian in age and varies in width from two to ten miles and about fifty miles long. The rock formations immediately surrounding this greenstone belt are deep seated granite intrusives and in some places, have penetrated the basic complex and are now exposed as large granite bodies. / Master of Science