IMPORTANT MESSAGE. We need your support now to keep running. Click here to find out why.
Log InRegister
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for Educators
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsThe ElementsUsersBooks & MagazinesMineral MuseumsMineral Shows & EventsThe Mindat DirectoryDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

Cigar Lake Mine, Athabasca Basin, Saskatchewan, Canada

This page is currently not sponsored. Click here to sponsor this page.
Latitude & Longitude (WGS84): 58° 4' 6'' North , 104° 32' 26'' West
Latitude & Longitude (decimal): 58.0686111111, -104.540555556

The world's second largest uranium deposit, discovered in 1983 and operated by a joint venture of Cameco, COGEMA, TEPCO and Idemitsu. Planned production start in 2007.

The deposit has also been studied as a natural analogue for nuclear waste disposal, with a very concentrated uranium oxide core isolated by a clay mineral halo.

Located about 660 km north of Saskatoon.

Mineral List

26 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

Mesoproterozoic - Paleoproterozoic
1000 - 2500 Ma
Collins Mbr of Manitou Falls Fm

Age: Proterozoic (1000 - 2500 Ma)

Stratigraphic Name: Collins Mbr of Manitou Falls Fm of Athabasca Gp

Lithology: Quartzarenite

Reference: Saskatchewan Energy and Resources. Geological atlas of Saskatchewan . [9]

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.


(1985) Mining Annual Review: 312.

Bruneton, P. (1987) Geology of the Cigar Lake Uranium Deposit (Saskatchewan, Canada) in Economic Minerals of Saskatchewan. Saskatchewan Geological Society.

Percival, J.B., Kodama, H. (1989) Sudoite from Cigar Lake, Saskatchewan. The Canadian Mineralogist: 27: 633-641.

Reyx, J. & Ruhlmann, F. (1993): Metallographic study of different mineral assemblages and chemical characteristics of uranium minerals of the Cigar Lake ore deposit (Saskatchewan, Canada). Canadian Journal of Earth Sciences 30(4), 705-719.

External Links

Mineral and/or Locality is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © and the Hudson Institute of Mineralogy 1993-2018, except where stated. relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: November 15, 2018 00:41:55 Page generated: October 9, 2017 20:09:17
Go to top of page