EXTECH IV ATHABASCA URANIUM DEPOSIT DATABASE
Geological Survey of Canada, Saskatchewan Industry and Resources, and Alberta Geological Survey


DEPNO COUNTRY LOCATION ALLNAMES COMMODITIES
40030 Canada (Saskatchewan) 58.23.12 N -- 109.32.13 W Claude Deposit; Claude Open Pit; Claude Lake Uranium Deposit U; Gn; Mo; Cf; Gf; Py

Database name: Uranium Deposits, Athabasca Basin
Custodial agency: Geological Survey of Canada
Compilers: Sunil S. Gandhi
Release date: 2007-03-02
   
Deposit name(s): Claude Deposit (occurrence name); Claude Open Pit (mine name); Claude Lake Uranium Deposit (occurrence name)
Political location(s): Canada; Province or state: Saskatchewan; Nearest community: La Ronge (555 km NW)
NTS map data: 074K05 (Cluff Lake)
Deposit clan (type): Unconformity-associated
Deposit (sub) types: Unconformity-associated - Proterozoic - fracture-bound; the deposit hosted entirely by the faults and fractures in the Paleoproterozoic high grade gneisses; Athabasca sandstone occurs 1 km to the southeast; Reference: Tona, F.; Alonso, D.; Svab, M., 1985: Geology and Mineralization in the Carswell Structure - A General Approach; In The Carswell Structure Uranium Deposits, Saskatchewan, Edited by Lainé, R.; Alonso, D.; Svab, M., Special Paper, Geological Association of Canada, Geological Association of Canada, 29, 230 p., p. 1 - 18
Deposit status: past producer; Size category: medium; Status comments: 0.64 Mt ore
Geologic province: Churchill - Rae Craton
Geologic subprovince: Taltson-Thelon Magmatic Zone
Geologic district: Western Athabasca Basin / Carswell Impact Crater
Deposit object located: open pit
Commodities: U; Gn; Mo; Cf; Gf; Py
Mineralization styles: aggregates and dissemination in fault gouge; fracture-fillings in fresh rock; mineralized fragments in Cluff breccia
Geological ages: Middle Paleoproterozoic - Late Paleoproterozoic (host rocks)
Middle Mesoproterozoic - Late Mesoproterozoic (mineralization)
Tectonic setting: continental marginal deformation zone-intracratonic; multiple regimes; Formal name: Earl River and Peter River Paragneiss Complex (host rocks)
Coincident features: E-W trending mylonite zone / zone à boules (mineralization is mainly in this nearly vertical structure; it was localized in the matrix around the 'boules' or balls, and has a banded appearance); Coincident feature name: Zone à boules
fault(s) (N-E trending faults that have well developed clay zones, which are mineralized); Coincident feature name: NE-SW faults
fault reactivation by meteorite impact (unaltered Cluff breccias occur in the east-trending subhorihontal faults; they contain fragments of mineralized rock); Coincident feature name: Cluff breccia
Regional tectonic structure: folds (in detail the folds gneisses are folded; two sets of the folds ) Tectonic structure name: N-E and NW trending folds
ductile deformation (N-S trending S1 foliation is overprinted by E-W trending S2 schistosity reflecting a later ductile deformation related to mylonitization in the area) Tectonic structure name: S2 Schistosity
shear zones (two N-E trending mineralized shears intersect the E-W trending zone and represent a later tectonic event) Tectonic structure name: N-E trending shears
cross-fault (the post-mineralization faults dip steeply west, displace mineralization and define its limits) Tectonic structure name: N and NNE trending faults
east-trending faults (the post-mineralization subhorizontal planar faults subdivide the Claude ore body into panels, and include much unaltered Cluff breccia) Tectonic structure name: unnamed
brecciation related to meteorite impact (a meteorite impact ca. 450 Ma caused the 39 km diameter structure, a post-impact 1 km uplift of the basement core, faults and dyke-like Cluff breccias) Tectonic structure name: Cluff breccia
Host rocks: (1) metamorphic; paragneiss (garnetiferous mafic gneiss with a lens of feldspathic metaquartzite that hosts the mineralization); Depositional setting: mesozonal; Metamorphic grade: amphibolite (upper) - granulite
External host rock forms:layered gneiss
Host rock protoliths:pelite, semipelite, psammite (feldspathic quartzite, pelites, carbonaceous pelites and minor mafic sediments of Paleoproterozoic age; locally a few beds of iron formation); Host rock protolith name: Peter River Gneiss
Internal host rock structures:coarse mafic gneiss; fine to medium felsic gneiss
Individual lithologies:metapelite (abundant garnets give mottled appearance; mafic and felsic gneisses each have a few interlayers of the other )
metasemipelite (abundant garnets give mottled appearance; mafic and felsic gneisses each have a few interlayers of the other)

(2) intrusive; granite suite (several interfoliated granitoids occur at the north end of the open pit); Depositional setting: hypabyssal; Metamorphic grade: amphibolite (upper) - granulite
External host rock forms:gneissic
Host rock protoliths:metasedimentary rocks (the granitic phase developed during high grade metanorphism; no major granitic pluton found in the vicinity); Host rock protolith name: Peter River Gneiss
Internal host rock structures:coarse grained
Individual lithologies:granite (migmatitic granitic layers and lenses in the metapelites)
Metallogenic signatures: U-Bi-Mo-Se-Au-Ti-Cu-Pb
Alteration signatures: chlorite alteration: chlorite, ubiquitous; What was altered: garnet, mafic silicates
sericitization: sercite, variable, overprinted by chlorite; What was altered: host gneisses
anatase alteration: anatase aggregates in chloritized biotite; What was altered: biotite
Mineralogy: kasolite
(alteration): illite, chlorite, sericite, anatase, dravite, jordisite
(gangue): graphite, molybdenite, hydrocarbon, clay
(mineralization): wulfenite
(veins and disseminations): uraninite, pitchblende, coffinite, brannerite, galena, molybdenite, clausthalite, paraguanajuatite, pyrite, chalcopyrite, sphalerite, uranophane, secondary U minerals, organic matter, organic matter with uranium
Radiometric ages: Object dated: Mineralogy(1); Age - Ma: 1,050; +65; -65; Dating method: U-Pb; Concentrate: uraninite; Source rock: uranium ore; Event dated: mineralization (early); Interpretive comment: age is within the range for the D and Dominique-Peter deposits; indicates the early mineralization; Reference: Devilliers, C., 1974: Datation de l'Echantillon "Claude" par la Méthode U/Pb; Internal Report (Unpublished), Commissariat à l'Energie Atomique
Deposit shape: lensoid
Deposit dimensions:length: 600 metre
width: 200 metre
thickness: 90 metre
Qualified comments: (Applies to: location and access) Located beneath the east shore of Claude Lake.

(Applies to: discovery and development) Discovered in 1971; outlined in 1972 by drilling on 20 m grid to 200 m; explored in 1980 by a decline, drifts and crosscuts, totalling 1800 m of workings. Open pit planned in 1981; test production in 1982; total ore mined from the pit during 1982-1989: 640000 t averaging 0.367 % U, which produced 2348 t of U. The pit was mined out by the middle of 1989.
Links to other databases: SMDI; Key value: 1151
GSC U-Th File (Prasad); Key value: 2719
References:
Bell, K.; Cacciotti, A. D.; Schnessl, J. H., 1985
Petrography and Geochemistry of the Earl River Complex, Carswell Structure, Saskatchewan - A Possible Proterozoic Komatiitic Succession
In The Carswell Structure Uranium Deposits, Saskatchewan, Edited by Lainé, R.; Alonso, D.; Svab, M., Special Paper, Geological Association of Canada, Geological Association of Canada, 29, 230 p., p. 71 - 80

Bell, K., 1985
Geochronology of the Carswell Area, Northern Saskatchewan
In The Carswell Structure Uranium Deposits, Saskatchewan, Edited by Lainé, R.; Alonso, D.; Svab, M., Special Paper, Geological Association of Canada, Geological Association of Canada, 29, 230 p., p. 33 - 46

Bennett, R. W., 2002
Geological Atlas of Saskatchewan, Version 5 (2002)
Government of Saskatchewan, CD-ROM

Clauer, N.; Ey, F.; Gauthier-Lafaye, F., 1985
K-Ar Dating of Different Rock Types from the Cluff Lake Uranium Ore Deposits (Saskatchewan-Canada)
In The Carswell Structure Uranium Deposits, Saskatchewan, Edited by Lainé, R.; Alonso, D.; Svab, M., Special Paper, Geological Association of Canada, Geological Association of Canada, 29, 230 p., p. 47 - 53

Devilliers, C., 1974
Datation de l'Echantillon "Claude" par la Méthode U/Pb
Internal Report (Unpublished), Commissariat à l'Energie Atomique

Gancarz, A. J., 1979
Chronology of the Cluff Lake Area Uranium Deposit, Saskatchewan, Canada (Extended Abstract)
In Uranium in Pine Creek Geosyncline: Proceedings of Symposium, Sydney, 1979, Edited by Ferguson, J.; Goleby, A. B., Proceedings of International Symposium, Interantional Atomic Energy Agency, Vienna, Interantional Atomic Energy Agency, Vienna, Austria, STI/PUB555, 760 p., p. 91 - 94

Harper, C. T., 1978
Geology of the Cluff Lake Uranium Deposits
Bulletin of the Canadian Institute of Mining and Metallurgy, Volume 71, p. 68 - 78

Harper, C. T., 1983
The Geology and Uranium Deposits of the Central Part of the Carswell Structure, Northern Saskatchewan, Canada
Ph. D. Thesis, Colorado School of Mines, Golden, Colorado, U.S.A., 337 p..

Hendry, H. E.; Wheatly, K. L., 1985
The Carswell Formation, Northern Saskatchewan: Stratigraphy, Sedimentology, and Structure
In The Carswell Structure Uranium Deposits, Saskatchewan, Edited by Lainé, R.; Alonso, D.; Svab, M., Special Paper, Geological Association of Canada, Geological Association of Canada, 29, 230 p., p. 87 - 103

Hoeve, J.; Quirt, D.; Alonso, D., 1985
Clay Mineral stratigraphy of the Athabasca Group: Correlation Inside and Outside the Carswell Structure
In The Carswell Structure Uranium Deposits, Saskatchewan, Edited by Lainé, R.; Alonso, D.; Svab, M., Special Paper, Geological Association of Canada, Geological Association of Canada, 29, 230 p., p. 19 - 31

Koning, E., 2006
The Cluff Lake Deposits, West Athabasca Basin, Saskatchewan, Canada
In Field Trip 3: Cluff Lake and Shea Creek Deposits; September 13-14; 2006 CIM Field Conference; Uranium: Athabasca Deposits and Analogues, Edited by Koning, E.; Robbins, J.; Carroll, J., Field Trip Guidebook, Canadian Institute of Mining and Metallurgy, CIM Geogolical Society, Saskatoon Section, 48 p., p. 1 - 32

Lainé, R.; Alonso, D.; Svab, M. Editor(s)), 1985
The Carswell Structure Uranium Deposits, Saskatchewan
Special Paper, Geological Association of Canada, Geological Association of Canada, 29, 230 p..

Lainé, R., 1985
Conclusion: the Carswell Uranium Deposits - An Example of Not So Unique Unconformity-Related Uranium Mineralization
In The Carswell Structure Uranium Deposits, Saskatchewan, Edited by Lainé, R.; Alonso, D.; Svab, M., Special Paper, Geological Association of Canada, Geological Association of Canada, 29, 230 p., p. 225 - 230

Lainé, R. T., 1986
Uranium Deposits of the Carswell Structure
Chapter 4, Section Saskatchewan Unconformity-associated and Sedimentary-hosted Deposits of Helikian Age, In Uranium Deposits of Canada, Edited by Evans, E. L., Special Volume, The Canadian Institute of Mining and Metallurgy, The Canadian Institute of Mining and Metallurgy, 33, 323 p., p. 155 - 169

Landais, P.; Dereppe, J. M., 1985
A Chemical Study of the Carbonaceous Material from the Carswell Structure
In The Carswell Structure Uranium Deposits, Saskatchewan, Edited by Lainé, R.; Alonso, D.; Svab, M., Special Paper, Geological Association of Canada, Geological Association of Canada, 29, 230 p., p. 165 - 174

Lintott, K. C.; et al., 1976
Uranium exploration in Saskatchewan
Canadian Mining Journal, Volume Apr 1, p. 60 - 67

Pacquet, A.; McNamara, S., 1985
The Study of the Basal Athabasca Succession in the D, E, L, F and S Areas of the Carswell Structure
In The Carswell Structure Uranium Deposits, Saskatchewan, Edited by Lainé, R.; Alonso, D.; Svab, M., Special Paper, Geological Association of Canada, Geological Association of Canada, 29, 230 p., p. 81 - 86

Pagel, M.; Svab, M., 1985
Petrographic and Geochemical Variations within the Carswell Structure Metamorphic Core and their Implications with Repsect to Uranium Mineralization
In The Carswell Structure Uranium Deposits, Saskatchewan, Edited by Lainé, R.; Alonso, D.; Svab, M., Special Paper, Geological Association of Canada, Geological Association of Canada, 29, 230 p., p. 55 - 70

Pagel, M.; Ruhlmann, F., 1985
Chemistry of Uranium Minerals in Deposits and Showings of the Carswell Structure (Saskatchewan-Canada)
In The Carswell Structure Uranium Deposits, Saskatchewan, Edited by Lainé, R.; Alonso, D.; Svab, M., Special Paper, Geological Association of Canada, Geological Association of Canada, 29, 230 p., p. 153 - 164

Pagel, M.; Wheatly, K.; Ey, F., 1985
The Origin of the Carswell Circular Structure
In The Carswell Structure Uranium Deposits, Saskatchewan, Edited by Lainé, R.; Alonso, D.; Svab, M., Special Paper, Geological Association of Canada, Geological Association of Canada, 29, 230 p., p. 213 - 223

Powell, B., 1985
Case Histories of the Radon Tube Sampler in the Carswell Structure
In The Carswell Structure Uranium Deposits, Saskatchewan, Edited by Lainé, R.; Alonso, D.; Svab, M., Special Paper, Geological Association of Canada, Geological Association of Canada, 29, 230 p., p. 189 - 199

Powell, B.; Koning, E.; Lainé, R., 1985
Gephysical Mapping of Gneiss Domes in the Carswell Structure and their Relationship to Uranium Mineralization
In The Carswell Structure Uranium Deposits, Saskatchewan, Edited by Lainé, R.; Alonso, D.; Svab, M., Special Paper, Geological Association of Canada, Geological Association of Canada, 29, 230 p., p. 201 - 212

Prasad, N., 2002
Uranium File: Canmindex
Geological Survey of Canada, Canadian Mineral Occurrence Index (Canmindex), CD-ROM

Ramaekers, P., 1981
Hudsonian and Helikian Basins of the Athabasca Region, Northern Saskatchewan
In Proterozoic Basins of Canada, Edited by Campbell, F. H. A., Paper, Geological Survey of Canada, Geological Survey of Canada, 81-10, 444 p., p. 219 - 233

Ramaekers, P.; Yeo, G. M.; Jefferson, C. W., 2001
Preliminary Overview of Regional Stratigraphy in the late Paleoproterozoic Athabasca Basin, Saskatchewan and Alberta.
In Summary of Investigations 2001, Volume 2, Saskatchewan Geological Survey; EXTEC IV Athabasca Uranium Multidisciplinary Study, Edited by Anonymous, Miscellaneous Reports, Saskatchewan Geological Survey, Saskatchewan Department of Energy and Mines, 2001- 4.2b, 1 disks, p. 240 - 251

Ruhlmann, F., 1985
Mineralogy and Metallogeny of Uraniferous Occurrences in the Carswell Structure
In The Carswell Structure Uranium Deposits, Saskatchewan, Edited by Lainé, R.; Alonso, D.; Svab, M., Special Paper, Geological Association of Canada, Geological Association of Canada, 29, 230 p., p. 105 - 120

Saskatchewan Geological Survey, 2003
Geology, and Mineral and Petroleum Resources of Saskatchewan
Miscellaneous Report, Saskatchewan Industry and Resources, Publication code 2003-7, 173 p., 4 maps.

Saskatchewan Industry and Resources, 2001
Saskatchewan Mineral Deposits Index
Government of Saskatchewan, Geological Atlas of Saskatchewan, Internet

Tapaninen, K. , 1976
Cluff Lake
In Uranium deposits of Northern Saskatchewan, Edited by Trigg, C. M.; Woollett, G. N., Field Trip A-1 Guidebook, GeoIogical Association of Canada and MineraIogical Association of Canada, 77 p.

Tona, F.; Alonso, D.; Svab, M., 1985
Geology and Mineralization in the Carswell Structure - A General Approach
In The Carswell Structure Uranium Deposits, Saskatchewan, Edited by Lainé, R.; Alonso, D.; Svab, M., Special Paper, Geological Association of Canada, Geological Association of Canada, 29, 230 p., p. 1 - 18

Tremblay, L. P., 1982
Geology of the uranium deposits related to the Sub-Athabasca unconformity, Saskatchewan
Paper, Geological Survey of Canada, Publication code 81-20, 56 p..

Wilson, J. S., 1985
Geochemistry and Glacial Geology - Application to Exploration in the Carswell Structure
In The Carswell Structure Uranium Deposits, Saskatchewan, Edited by Lainé, R.; Alonso, D.; Svab, M., Special Paper, Geological Association of Canada, Geological Association of Canada, 29, 230 p., p. 175 - 188

Production data: Report period: from 1982 until 1989-06; 712,250 metric ton ore; Provisional entry?: yes; Yearly or summary?: S
Grade-commodity information:U: 0.33 percent
weight-commodity information:U: 2,348.092 metric ton
Reference: Koning, E., 2006: The Cluff Lake Deposits, West Athabasca Basin, Saskatchewan, Canada; In Field Trip 3: Cluff Lake and Shea Creek Deposits; September 13-14; 2006 CIM Field Conference; Uranium: Athabasca Deposits and Analogues, Edited by Koning, E.; Robbins, J.; Carroll, J., Field Trip Guidebook, Canadian Institute of Mining and Metallurgy, CIM Geogolical Society, Saskatoon Section, 48 p., p. 1 - 32
Percent weights allocated to deposit: 0.0%
Associated mine(s): Claude Uranium Mine (40014)
Associated group(s): Cluff Lake deposits (40002)

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