|Years of Operation:||1934 – 1954, 1980 -1982|
|Ounces of Gold Produced:||385,503|
Matachewan Consolidated Mine (Past Producer)
MAIN METALS: Au, Ag
Approximately V/2 miles west-northwest of Matachewan, Y* mile south of Otisse Lake, in southeastern Powell Township. Shafts Nos. 1, 2, and 3 in claim MR5830. Latitude 47.950, Longi tude 80.680 . Map reference: ODM 2110, Powell and Cairo Townships.
The orebodies are close to a contact between a belt of tightly folded Timiskaming meta sediments that strike east and dip steeply south, and Keewatin metavolcanics (andesite, basalt, tuff, and agglomerate). These rocks are intruded by dikes and cupolas of Algoman syenite porphyry. All rocks are cut by north-trending Matachewan diabase dikes. Cobalt Group sedimentary rocks mantle the older formations Va mile south of the shaft.
The orebodies were of two types: 1) Those within metavolcanics were irregular and had limited vertical extent. They consisted of a series of gently dipping quartz stringers and adjacent lavas and/or tuffs that were fractured, bleached, and mineralized with pyrite and gold. With an aver age gold content of 0.16 ounce of Au per ton, they were of higher grade than the second type and were the main source of ore during the first 5 years of production. 2) Those within the porphyry masses occurred mainly in the western part of the property and were similar to the orebodies at the Young-Davidson Mine. Most of the porphyry is fractured to some extent and the fractures are filled with quartz and gold-bearing pyrite. In some zones, this fracturing is sufficiently intense and the gold content sufficiently high to make ore.
Leased by Matachewan Consolidated Mines Limited.
1917: Gold discovered by Sam Otisse.
1918-1919: Vertical two-compartment No.1 Shaft to 170 feet with 800 feet of lateral development on the 160-foot level. No.2 Shaft, inclined 70″, to 33 feet. Work by Matachewan Gold Mines Limited.
1923-1924: Three properties merged to form Mat achewan Canadian Gold Mines Limited. Diamond- drilling, totalling 5,455 feet, by The Porcupine Goldfields Development and Finance Company Limited.
1933-1954: Underground workings dewatered, three-compartment vertical No.3 Shaft to 2,432 feet, 60,663 feet of underground development and extensive underground diamond-drilling and sam pling. Continuous production from 1934 to 1952 when mine was put on a salvage basis. All work by Matachewan Consolidated Mines Limited.
1969-1970: Diamond-drilling (amount unknown) by Matachewan Consolidated Mines Limited.
|Year||Gold||Silver||Ore Milled||Recovered Grade|
|(ounces)||(ounces)||(tons)||(ounce of Au per ton)|
CIMM 1948, Structural Geology of Canadian Ore Deposits, Vol.1, p.638-640.
ODM 1935, Vol.44, pt.2, p.36-42.
Resident Geologist’s Files, Ontario Ministry of Na tural 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.