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Yates mine, Otter Lake, Pontiac RCM, Outaouais, Québec, Canada

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Latitude & Longitude (WGS84): 45° 57' 50'' North , 76° 32' 27'' West
Latitude & Longitude (decimal): 45.96389,-76.54083
Köppen climate type:Dfb : Warm-summer humid continental climate

Formerly: Yates Mine(Yates Uranium Mine, Yates Prospect), Otter Lake, Huddersfield Township, Pontiac Co., Québec, Canada

The deposit was originally worked for phlogopite and fluorite in 1906-1907 by the Calumet Mica Co. and later by Mr.A.G.Martin of Ottawa. The workings consisted of a few pits, the deepest measuring 20 feet. In 1943-44, Twin Valley Prospecting Syndicate mined 18 tons of fluorite from the deposit. In 1950 Mr.J.M.Yates discovered the presence of a radioactive mineral, uranothorite, and Yates Uranium Mines Inc. was formed to develop the property. Development consisted of a 300 ft adit, 2 open cuts, and diamond drilling.

The coordinates given are for what is known as the "Matte Zone".
Areas are the Belanger, Belisle, Camp, Cliff, Lake and Matte.

According to this thread,6,240574,372089#msg-372089 the Yates Mine was closed and bulldozed a couple of years ago.

Mineral List

27 valid minerals. 1 erroneous literature entry.

Regional Geology

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

Data and map coding provided by, used under Creative Commons Attribution 4.0 License

This page contains all mineral locality references listed on This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.


- Sabina, Ann P., Geological Survey of Canada paper 70-50.
M A G Lafontaine (1979) Uranium-Thorium Deposite at the Yates Mine, Huddersfield Township, Quebec. MSc thesis, University of Ottawa.
- Leavitt, D.L. (1981). "Minerals of the Yates uranium mine, Pontiac County (Québec)." Mineralogical Record: 12(6): 359-363.
Van Velthuizen, J.J., Gault, R.A., Robinson, G.W. & Scovil, J.(2006) Zeolite occurrences in the Central Metasedimentary Belt of the Grenville Province, Ontario, Quebec and New York State. Mineralogical Record 37, 283-296 [locality #41].
- Stevenson, J.S., Stevenson, L.S. (1955). Uranium-rich thorianite from Pontiac County, Quebec. Transactions Royal Society of Canada, 3rd series, section IV, XLIX, 105-110.

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