|Years of Operation:||1948 – 1957, 1962 – 1964|
|Ounces of Gold Produced:||1,352|
Ryan Lake Mine (Past Producer)
Cu, Ag, Au, Mo
LOCATION: Approximately 3 miles northwest of Matachewan, 1^ mile north of Ryan Lake, in central Powell Township. Shaft in claim MR 12528. Latitude 47.970, Longitude 80.790 . Map reference: ODM 2110, Powell and Cairo Townships.
The property straddles the contact between tightly folded Timiskaming metasediments and Keewatin metavolcanics to the north. An ultramafic
intrusive body occurs along the contact, several syenite cupolas intrude the sedimentary, volcanic and ultramafic intrusive rocks, and north-trending diabase dikes cut all of the above rocks. The two orebodies are related to east-trending, steeply dipping shear zones. The “main ore zone” occupies a 4- to 5-foot wide vertically dipping shear zone in porphyry and serpentinized peridotite. Quartz veins and lenses are mineralized with molybdenite, chalcopyrite, and a little pyrite. The “north mineral zone” consists of several parallel shears in andesitic metavolcanics, 200 feet north of the main zone.
The estimated average grade of the ore at the start of underground operations was 1.25 percent Cu, 0.5 percent Mo and 0.03 ounce of Au per ton.
Extender Minerals of Canada Limited.
1947: Diamond-drilling (amount unknown) by Ryan Lake Mines Limited.
1948: Magnetic and self-potential surveys, and 50 diamond-drill holes by Teck Exploration Company Limited.
1950-1957: Trenching, test-pitting, and open pit mining. Two-compartment shaft to 480 feet, 8,563 feet of lateral development on levels at 92, 192, 317, and 442 feet. 21,378 feet of underground diamond-drilling, and 16,140 feet of surface diamond-drilling. 75-ton mill nstalled, 163,490 tons of ore milled, and concentrates shipped to Noranda. Work by New Ryan Mines Limited (name changed to Min-Ore Mines Limited in 1955).
1958-1959: 167 feet of drifting, 6,790 feet of underground diamond-drilling, 850 feet of surface diamond-drilling, and mill tests by International Ranwick Limited.
1962: Ore for mill tests mined from open pit by Pax International Mines Limited.
1964-1966: Geochemical survey, 650 feet of under ground development, and 13,167 feet of under ground and surface diamond-drilling. Limited production from a 150-ton mill. Ore (5,938 tons) and old tailings (14,025 tons) treated in roasting and leaching plant. Work by Pax International Mines Limited.
1966-1967: Geological, geochemical and geophysical surveys, and 15 diamond-drill holes (8,929 feet) by Cominco Limited.
ODM 1967, GR51, p.37, 38 (Pax International Mines Limited).
ODM 1969, MRC12, p.369.
Resident Geologist’s Files, Ontario Ministry of Natural Resources, Kirkland Lake.
Gordon, J.B., Lovell, H.L., de Grijs, Jan, and Davie, R.F.
1979: Gold Deposits of Ontario, Part 2: Part of District of Cochrane, Districts of Muskoka, Nipissing, Parry Sound, Sudbury, Timiskaming, and Counties of Southern Ontario; Ontario Geological Survey, Mineral Deposits Circular 18, 253p.