The Nortoba-Tyson property is 12 km northwest of the town of Beardmore. Beardmore is about 205 km by highway northeast of the airport in Thunder Bay, Ontario. The property can be accessed via highway 580, road 72, and bush roads. Size of Property
55 claims; 890 hectares (2,200 acres) Ownership
100% Project Overview
The project area includes both gold and molybdenite occurrences. Four numbered gold-bearing quartz veins are the No. 1, No. 1A, No. 2, and No. 7. The No. 1 is the longest at 365 m (1,200 feet). The No. 1A lies a few meters south of the western part of the No.1. The No. 2 and No. 7 veins are 145 m (475 feet) and 220 m (725 feet) south of the No. 1. The No. 2 is about 490 m (1,600 feet) long and the No. 7 is relatively short. The veins have variable widths in the range of 0.2-1 m (0.6-3.3 feet) . The No. 7 is a network of quartz stringers over a width of 3.7 m (12 feet). The No.1, No. 1A, and No. 2 are quartz veins with minor pyrite and rare visible gold. A 5-pound sample of the No. 1A collected by the Department of Energy yielded 412 g/tonne (12 oz/st) gold and a grab sample by the Ontario Department of Mines yielded 55 g/tonne (1.62 oz/st) (Mason and White, 1986).
Hand cobbed shipments of ore from No. 1A yielded 13.31 ounces gold from 5.5 tons and 28.67 ounces gold from 11.8 tons in 1963-1964. Average grades were consequently 83.0 g/tonne (2.42 oz/st) and 83.3 g/tonne (2.43 oz/st). Four subsequent shipments of about 20 tons each averaged 20.2-35.0 g/tonne (0.59-1.02 oz/st) (Lamble, 1965).
Surface sampling of the veins in 1983 yielded a few values greater than 3.4 g/tonne (0.1 oz/st) in the No. 1 and eastern part of No. 2, trace to 2.4 g/tonne (0.07 oz/st) gold in the western part of No. 2, and no more than trace gold in No. 7 (Atkins, 1983).
The No. 3 vein is about 350 m (1,130 feet) southeast of the No. 1 vein. It is a quartz vein with molybdenite as films, flakes, and small masses within the quartz. Drilling has demonstrated continuity along strike for 670 m (2,200 feet) (Bevan , 2006). Based on 2005 drilling results, Bevan (2006) estimated that a 91.5 m (330 feet) long section of the vein contains approximately 1.7% Mo over a width of 0.9 m (3 feet). Geology
The Nortoba-Tyson project is located within the Beardmore-Geraldton greenstone belt of the Wabigoon subprovince of the Superior province. The project area straddles the boundary between mafic rocks of the Bish Bay assemblage and intermediate rocks of the Poplar Point assemblage within the northern metavolcanic sub-belt (Hart, terMeer, and Jolette, 2002).
The Bish Bay assemblage consists of pillowed and massive metabasalt and rare tuff. The Poplar Point assemblage is more varied with intermediate flows and tuffs and minor metabasalt. Gabbro intrusions occur in the Bish Bay assemblage and intermediate to felsic dikes and sills occur in the Poplar Point assemblage (Hart, terMeer, and Jolette, 2002).
The No. 1 and No. 1A veins are hosted in mafic metavolcanic rock. The No. 2 and No. 7 veins are near the northern and southern contacts, respectively, of an intrusive diorite with intermediate metavolcanic rocks (Atkins, 1983).
Proterozoic diabase dikes crosscut all other rock units. Mineralization
Visible gold occurs in the No. 1 and No. 2 veins. The veins and wall rocks are locally stained brown due to pyrite or ankerite oxidation. The veins may occupy shear zones (Mason and White, 1986). Wall rocks are typically foliated and have ankerite. The wall rock of the No. 1 vein has chlorite (Atkins, 1983). References
Atkins, W.M., 1983, Bish Bay project, Tyson property, Beardmore area, exploration report: Report for Stroud Resources Ltd.
Bevan, P.A., 2006, Qualifying report on the Nortoba-Tyson molybdenite and gold property in Dorothea Township, N.W. Ontario: Report for Roxmark Mines Limited.
Hart, T.R., terMeer, M., and Jolette, C., 2002, Precambrian geology of Kitto, Eva, Summers, Dorothea and Sandra townships, northwestern Ontario: Phoenix bedrock mapping project: Ontario Geological Survey, Open File Report 6095, 206 p.
Lamble, B.C., 1965, Report on the Woods-Tyson gold claims north of Leitch gold mine, Beardmore, Ontario
Mason, J. and White, G., 1986, Gold occurrences, prospects, and deposits of the Beardmore-Geraldton area, districts of Thunder Bay and Cochrane: Ontario Geological Survey, Open File Report 5630.