Castle Mine (Castle-Trethewey Mine), Haultain Township, Gowganda area, Cobalt-Gowganda region, Timiskaming District, Ontario, Canada
|Latitude & Longitude (WGS84):||47° 40' 35'' North , 80° 44' 29'' West|
|Latitude & Longitude (decimal):||47.67639,-80.74139|
The deposit was discovered in 1917 and developed through two shafts by Castle-Trethwey Mines Ltd. Production to the end of 1931 totaled 6.5 million oz. Ag and 300,000 lbs. Co. The mine was reopened by Agnico-Eagle Mines in 1983. They rehabilitated the Castle #3 shaft (11 levels to 850ft.) and operated until sometime in the late 1980's.
18 valid minerals.
This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.
Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org
|Neoarchean - Mesoarchean|
2500 - 3200 Ma
|Mafic to intermediate metavolcanic rocks|
Age: Archean (2500 - 3200 Ma)
Comments: Superior Province
Reference: Ontario Geological Survey. 1:250 000 scale bedrock geology of Ontario. ISBN 978-1-4435-5705-4. Miscellaneous Release–Data 126 - Revision 1. 
Ontario Dept. of Mines, 1968, MRC No.10, Silver Cobalt Calcite Vein Deposits of Ontario, by A.O.Sergiades
OGS 1978, Rpt.175, Geology of the Gowganda Lake-Miller Lake silver area, District of Timiskaming, W.H. McIlwaine
Northern Miner Nov.17, 1983