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Sigma mine (Sigma No. 1 mine), Val d'Or, La Vallée-de-l'Or RCM, Abitibi-Témiscamingue, Québec, Canada

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Latitude & Longitude (WGS84): 48° 6' 5'' North , 77° 45' 17'' West
Latitude & Longitude (decimal): 48.10139,-77.75472
Köppen climate type:Dfb : Warm-summer humid continental climate

A gold mine started in 1937. Produced 103.7 tons of Au since opening. Workings are at least to the 1,530 meter level (12th level)(11th. level = 1,395 meters deep).

Coordinates extrapolated from topographic map.

Mineral List

21 valid minerals.

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

2500 - 2800 Ma

ID: 3191051
Archean volcanic rocks

Age: Neoarchean (2500 - 2800 Ma)

Comments: Superior Province

Lithology: Mafic-ultramafic volcanic rocks; tholeiite

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

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.


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Sabina, A.P. (2003)Rocks & Minerals for the collector; Kirkland Lake - Rouyne-Noranda - Val d'Or, Ontario & Quebec. GSC Misc. Report 77, 176-177 p.

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