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


DEPNO COUNTRY LOCATION ALLNAMES COMMODITIES
40019 Canada (Saskatchewan) 57.46.07 N -- 105.04.57 W McArthur River Uranium Deposit; McArthur River Uranium Mine; P2 North Uranium Deposit U

Database name: Uranium Deposits, Athabasca Basin
Custodial agency: Geological Survey of Canada
Compilers: Sunil S. Gandhi
Release date: 2007-03-02
   
Deposit name(s): McArthur River Uranium Deposit (occurrence name); McArthur River Uranium Mine (mine name); P2 North Uranium Deposit (occurrence name)
Political location(s): Canada; Province or state: Saskatchewan; Nearest community: Key Lake mine-mill complex (70 km 045°)
NTS map data: 074H14 (Kirsch Lake)
Deposit clan (type): Unconformity-associated
Deposit (sub) types: Unconformity-associated - Proterozoic - silica-bound; characterized by extensive silica alteration of Athabasca sandstone above the deposit and negligible Ni, Co and As, in contrast with the clay-bound deposits of the district ; Reference: McGill, B. D.; Marlatt, J. L.; Matthews, R. B.; Sopuck, V. J.; Homeniuk, L. A.; Hubregeste, J. J., 1993: The P2 North Uranium Deposit, Saskatchewan, Canada; Exploration and Mining Geology, Volume 2, p. 321 - 331
Deposit status: producer; Size category: giant
Geologic province: Churchill - Hearne Craton
Geologic subprovince: Wollaston Domain (Fold Belt)
Geologic district: Eastern Athabasca Basin
Deposit object located: drillhole
Commodities: U
Mineralization styles: massive (above unconformity); massive (below unconformity); vein (above unconformity); vein (basement at unconformity); disseminated (below unconformity); podiform (P2 Fault and hanging wall)
Geological ages: Middle Paleoproterozoic - Middle Mesoproterozoic (host rocks)
Tectonic setting: epicontinental deformation zone-basement reactivation; transpressive; Formal name: Western Wollaston Domain (host rocks)
continental basin-intracratonic; stable; Formal name: Athabasca Basin (host rocks)
continental basement thrust faults-fault reactivation; transpressive; Formal name: P2 North fault zone (mineralization)
Coincident features: fault zone (high angle reverse, or thrust fault); Coincident feature name: P2 North Fault
unconformity (mineralization above and below unconformity)
Regional tectonic structure: fold belt (NE-trending regional thermo-tectonic zone; boundary with Archean Mudjatik Domain to the NW; core of the Trans-Hudson orogen to the SE) Tectonic structure name: Wollaston fold belt
thrust fault (Hudsonian NE-trending reverse fault in basement; reactivated during deposition of the basal part of Athabasca Group) Tectonic structure name: P2 North Fault
transcurrent faults (steeply dipping set of faults trending 100-110°; offsets mineralized zone as much as 100 m.)
basement granitic dome (remobilized; ~ 5 km NW of deposit; interpreted from geophysical data)
Host rocks: (1) metamorphic; paragneiss (high-grade ore - Pod 2); Depositional setting: platform-shelf; Metamorphic grade: amphibolite - middle; Component: basement mineralization
External host rock forms:thin to thick bedded
Internal host rock structures:foliated
gneissic
Individual lithologies:metapelite (cordierite-graphite bearing lower member, garnet-cordierite bearing semipelite in the middle, and upper member of cala-silicates)
semipelite
Host rock stratigraphy:Lower Wollaston Supergroup

(2) metamorphic; paragneiss (deposit foot wall - local); Depositional setting: platform-shelf; Metamorphic grade: amphibolite; Component: foot wall
External host rock forms:schistose-gneissic metasediments
Host rock protoliths:sandstone (includes semipelitic and pelitic beds)
arkosic sandstone
semipelite
Internal host rock structures:interbedding
Individual lithologies:quartzite (sillimanite, muscovite and diaspore bearing quartzite, and garnetiferous and biotitic quartzite)
meta-arkose
Host rock stratigraphy:Lower Wollaston Supergroup

(3) sedimentary; mudstone-sandstone-conglomerate (pod1 at basement-sandstone contact); Depositional setting: fluviatile; Component: P2 Fault and hanging wall
External host rock forms:thin to thick bedded
Internal host rock structures:planar beds
cross bedding
Individual lithologies:quartz arenite (continental siliciclastic sediments deposited on paleo-weathered crystalline basement)
conglomerate (basal: 10 m thick on hanging wass and 25 m thick on footwall; contains basement quartzite clasts.)
mudstone (continental siliciclastic sediments deposited on paleo-weathered crystalline basement)
Host rock stratigraphy:Read Formation
Country rocks: (1) paragneiss; (major unit of basement strata); Country rock name: unit of Lower Wollaston Supergroup ; Metamorphic grade: amphibolite - upper
(2) granitoid gneisses; (dome northeast of deposit); Country rock name: reactivated Archean gneiss dome; Metamorphic grade: amphibolite - upper
(3) conglomerate-sandstone; Country rock name: Athabasca Group; Metamorphic grade: unmetamorphosed
Metallogenic signatures: U
Alteration signatures: chlorite alteration: green clay-chlorite; What was altered: host rocks of ore
tourmalinization: dravite
Mineralogy: (disseminated mineralization): uraninite
(fracture fillings, coatings, disseminations): covellite, chalcocite, carbonate, chlorite
(mineralization - massive): uraninite, pitchblende - colloform, galena, pyrite, chalcopyrite, quartz, gold, chlorite
(oxide-arsenide-sulphide ore): Ni-Co sulpharsenide
(vein mineralization): uraninite, chlorite
Radiometric ages: Object dated: Mineralogy(1); Age - Ma: 1,514; +18; -18; Dating method: U-Pb; Concentrate: uraninite, single grain; Source rock: uranium ore; Formal name: initial uraninite deposition; Event dated: mineralization (early); Interpretive comment: oldest age from the sub-Athabasca deposits; 8 collinear points; lower intercept at 667 ± 50 Ma; Reference: Cumming, G. L.; Krstic, D., 1992: The Age of Unconformity-Related Uranium Mineralization in the Athabasca Basin, Northern Saskatchewan; Canadian Journal of Earth Sciences, Volume 29, p. 1623 - 1639

Object dated: Mineralogy(1); Age - Ma: 1,327; +8; -8; Dating method: U-Pb; Concentrate: uraninite, single grain; Source rock: uranium ore; Formal name: second stage of uraninite deposition; Event dated: mineralization; Interpretive comment: younger of two adjacent high reflectance grains (Rank 1) with relatively more exsolved galena grains; Reference: Cumming, G. L.; Krstic, D., 1992: The Age of Unconformity-Related Uranium Mineralization in the Athabasca Basin, Northern Saskatchewan; Canadian Journal of Earth Sciences, Volume 29, p. 1623 - 1639

Object dated: Mineralogy(1); Age - Ma: 1,540; +38; -38; Dating method: Laser Ablation HR-ICP-MS; Concentrate: uraninite; Source rock: uranium ore (high grade); Event dated: mineralization (early); Interpretive comment: 3 data points; oldest age from upper intercept with concordia; average 207Pb/206Pb age: 1570 ± 19 Ma; Reference: Alexandre, P.; Kyser, K.; Polito, P., 2003: Geochronology of the Paleoproterozoic Basement-hosted Unconformity-type Uranium Deposits in Northern Saskatchewan, Canada; In Proceedings of an International Conference on Uranium Geochemistry 2003, Nancy - France, April 13 - 16, 2003: Extended Abstracts (Recueil des Conferences Colloque International Géochimie de l'Uranium 2003), Edited by Cuney, M., Proceedings of International Conference (Extended Abstracts), Unité Mixte de Recherche - Géologie et Gestion des Ressources Minérales et Enérgetiques, 7566 Nancy, France, 409 p., p. 37 - 40

Object dated: Mineralogy(1); Age - Ma: 1,247; +88; -88; Dating method: Laser Ablation HR-ICP-MS; Concentrate: uraninite; Source rock: uranium ore (high grade); Event dated: mineralization (hypogene); Interpretive comment: 17 data points; close to linear plot; age of recrystalliztion; average 207Pb/206Pb age: 1247 ± 88 Ma; Reference: Alexandre, P.; Kyser, K.; Polito, P., 2003: Geochronology of the Paleoproterozoic Basement-hosted Unconformity-type Uranium Deposits in Northern Saskatchewan, Canada; In Proceedings of an International Conference on Uranium Geochemistry 2003, Nancy - France, April 13 - 16, 2003: Extended Abstracts (Recueil des Conferences Colloque International Géochimie de l'Uranium 2003), Edited by Cuney, M., Proceedings of International Conference (Extended Abstracts), Unité Mixte de Recherche - Géologie et Gestion des Ressources Minérales et Enérgetiques, 7566 Nancy, France, 409 p., p. 37 - 40

Object dated: Mineralogy(1); Age - Ma: 950; +27; -27; Dating method: Laser Ablation HR-ICP-MS; Concentrate: uraninite; Source rock: uranium ore (high grade); Event dated: mineralization, remobilized; Interpretive comment: 11 data points; nearly linear plot; isotopic system resetting; average 207Pb/206Pb age: 952 ± 48 Ma; Reference: Alexandre, P.; Kyser, K.; Polito, P., 2003: Geochronology of the Paleoproterozoic Basement-hosted Unconformity-type Uranium Deposits in Northern Saskatchewan, Canada; In Proceedings of an International Conference on Uranium Geochemistry 2003, Nancy - France, April 13 - 16, 2003: Extended Abstracts (Recueil des Conferences Colloque International Géochimie de l'Uranium 2003), Edited by Cuney, M., Proceedings of International Conference (Extended Abstracts), Unité Mixte de Recherche - Géologie et Gestion des Ressources Minérales et Enérgetiques, 7566 Nancy, France, 409 p., p. 37 - 40
Deposit shape: multiple lenses; Component: mineralization
Deposit dimensions:length: 600 metres
Qualified comments: (Applies to: discovery and development) Discovered in 1988; production began in 1999 with resources of 151742 t U averaging 17.96 % U in 0.845 Mt ore; it is the world's largest high grade uranium deposit; East zone 18 % U; West zone 12 % U. Underground work during 1999-'01 revealed additional ore; the total then stood at 177,570 t U in 0.898 Mt of ore averaging 19.775 % U viz., Reasonably Assured or Proven plus Probable resources.

(Applies to: regional stratigraphy) Country rocks in the vicinity of the McArthur River Deposit include Paleoproterozoic rocks of the Lower Wollaston Supergroup, reactivated Archean granitoid gneisses, and overlying Late Paleoproterozoic-Mesoproterozoic sedimentary rocks of the Athabasca Group. The Lower Wollaston Supergroup is amphibolite to granulite in metamorphic grade and includes the metamorphosed pelitic and semi-pelitic equivalents of shale and siltstone with graphitic horizons, and quartzite and meta-arkose with minor calc-silicate and metapelite. The Athabasca Group in the area surrounding the deposit is as described for the property geology, with varying degrees of silicification, quartz dissolution and alteration minerals such as illite, dravite and crandallite. The Bird River Member, which is 125 metres thick at P2 North zone, contains relict heavy mineral laminae and maroon-coloured late diagenetic to hydrothermal hematite. The Collins Member, which is 80 metres thick at P2 North zone, consists of clean, medium to course-grained sandstone with rare, thin, granule beds. The Dunlop Member, 180 metres thick at the P2 North zone, is a fine-grained, well-sorted sandstone with abundant clay intraclasts.

(Applies to: property geology) The McArthur River ore is located in at least four zones along the P2 fault, from about 20 m above, to more than 90 m below the basal unconformity of the Athabasca Basin. The basal unconformity is offset 40-80 m by the southeast-dipping, brittle-reactivated, reverse P2 fault. Ore zones are spatially associated with intersecting northwest-trending steeply dipping cross faults. Host rocks below the unconformity consist of structurally intercalated paragneiss units of the lower part of the Paleoproterozoic Wollaston Supergroup. Protoliths in the mine area include pelite, semi-pelite, quartz arenite, and arkose that were metamorphosed to middle amphibolite facies. In the hanging wall of the P2 fault, these are mapped as a cordierite- and graphite-bearing lower structural unit, a garnet- and cordierite-bearing middle unit, and a calc-silicate-rich upper unit. The lower structural unit hosts most of the deformation and the high-grade ore. The footwall to the P2 fault comprises structurally repeated quartzite and meta-arkose (sillimanite-muscovite-diaspore, garnetiferous and biotitic quartzite). The P2 fault extends up into highly silicified essentially flat-lying strata of the Late Paleoproterozoic-Mesoproterozoic Athabasca Group. The basal Read Formation (former MFa member of the Manitou Falls Formation) is interbedded fluviatile crossbedded and planar bedded quartz arenite, conglomerate, and mudstone about 85-145 metres thick, deposited on a paleo-weathered crystalline basement. Its basal quartz-pebble conglomerate is 10 to 25 metres thick on the hanging wall of the P2 fault, and 20-40 m thick in the footwall, and includes some basement quartzite clasts. The overlying Manitou Falls Formation is an upward-fining succession from conglomeratic quartz arenite of the Bird Member (MFb), through quartz arenite of the Collins Member (MFc), to quartz arenite with clay intraclasts (MFd) of the Dunlop Member, all silicified and fractured in the vicinity of the P2 fault. Extensive Quaternary till forms fields of southwest-trending drumlins across the area.

(Applies to: mineralization) The ore forms essentially monometallic uraninite pods and lenses within the P2 fault zone and its hanging wall that cut silicified Read Formation conglomerate, paleo-weathered basement at the unconformity and graphitic metapelite below the unconformity. The ore is in at least four lenticular zones over a north-northeast strike length of at least 600 metres. Individual zones measure approximately 40-90 metres in length, 20-50 metres in width and 50-150 metres in height. Mineralization styles include massive pods grading up to 30% uranium metal above and below the unconformity, disseminations below the unconformity, and veins or fracture fillings both at and above the unconformity. Despite the local presence of metallic minerals of other metals besides uranium, none contribute significantly to the ore.

(Applies to: alteration) Early alteration is in the form of extensive quartz cement in the vicinity of the P2 fault. This cement is most intense in the Read Formation and Bird Member up to 150 m above the unconformity, decreasing upward and outward away from the fault zone. This cement preserves relict zones of the basin-wide diagenetic dickite that is otherwise altered to illite in a broad corridor extending from Key Lake to north of McArthur River. This illite is most intense in zones of fractures and quartz dissolution above the P2 fault, and is expressed as potassium anomalies in boulders. Illite is in turn overprinted by linear zones of anomalous chlorite (sudoite) and dravite, with corresponding boron enrichments greater than 1000 ppm broadening upward. Also above the McArthur River deposit are anomalous zones of uranium enrichment from just above the 1 ppm regional background to pockets of 3-10 ppm or more that reach surface in places.

(Applies to: geophysical surveys) Aeromagnetic data 'see through' the Athabasca Group cover and map basement supracrustal units as lows, with granitoid rocks as highs. The graphitic metapelite in the P2 fault zone is one of many local to regional conductors within the aeromagnetic lows that can be mapped by airborne to ground electromagnetic methods. Audiomagnetotelluric methods can trace this conductivity more than a kilometre beneath the surface, map silicified zones of the Athabasca Group as a having greater resistivity, and identify quartz dissolution zones by their lower resistivity. Seismic reflection can generate laterally continuous images of the unconformity and provides data for structural cross sections showing offsets of the P2 and other faults, with pseudo-3D data providing a topographic map of the unconformity surface, documenting the location of ore zones at fault intersections. The ore bodies are dense but too small to generate gravity anomalies that can be measured at surface, however the large silicified zones produce gravity highs, quartz dissolution produces gravity lows, and the different basement rock units have different densities that can be modelled. Borehole geophysics provides bulk geophysical rock parameters that allow calibration of geological properties to geophysical properties.

(Applies to: regional structure) The Wollaston Supergroup unconformably overlies and is structurally intercalated with late Archean granitoid basement, and is in turn cut by uranium-rich pegmatite and small granitoid bodies. Only the upper part of the Wollaston Supergroup is present in the mine area - the deformed and metamorphosed western part of a foreland basin succession that underwent four episodes of westerly vergent ductile fold and thrust deformation. The McArthur River mine is located in the metapelite-dominated western Wollaston Domain near its transition to the granitoid-dominated Mudjatik Domain. Graphitic metapelite gneiss units in these domains constitute weak zones between competent units and were foci for local deformation during regional folding and thrusting. The Wollaston and Mudjatik Domains were uplifted, deeply eroded and subject to intense lateritic weathering prior to deposition of the Athabasca Group. Later brittle reactivation of the early ductile structures such as the P2 fault resulted in offset of the basal unconformity of the Athabasca Group and focusing of mineralizing fluids, especially where there are crosscutting reactivated structures.
Links to other databases: SMDI; Key value: 2170
SMDI; Key value: 2171
References:
Alexandre, P.; Kyser, K., 2003
Mineralogy, Fluid Geochemistry, and Evolution of Paleoproterozoic Basement-hosted Unconformity-type Uranium Deposits in Northern Saskatchewan, Canada
In Proceedings of an International Conference on Uranium Geochemistry 2003, Nancy - France, April 13 - 16, 2003: Extended Abstracts (Recueil des Conferences Colloque International Géochimie de l'Uranium 2003), Edited by Cuney, M., Proceedings of International Conference (Extended Abstracts), Unité Mixte de Recherche - Géologie et Gestion des Ressources Minérales et Enérgetiques, 7566 Nancy, France, 409 p., p. 41 - 44

Alexandre, P.; Kyser, K.; Polito, P., 2003
Geochronology of the Paleoproterozoic Basement-hosted Unconformity-type Uranium Deposits in Northern Saskatchewan, Canada
In Proceedings of an International Conference on Uranium Geochemistry 2003, Nancy - France, April 13 - 16, 2003: Extended Abstracts (Recueil des Conferences Colloque International Géochimie de l'Uranium 2003), Edited by Cuney, M., Proceedings of International Conference (Extended Abstracts), Unité Mixte de Recherche - Géologie et Gestion des Ressources Minérales et Enérgetiques, 7566 Nancy, France, 409 p., p. 37 - 40

Annesley, I. R.; Madore, C.; Haznal, J., 2003
Wollaston-Mudjatik Transition Zone: Its Characteristics and Influence on the Genesis of Unconformity-type Uranium Deposits
In Proceedings of an International Conference on Uranium Geochemistry 2003, Nancy - France, April 13 - 16, 2003: Extended Abstracts (Recueil des Conferences Colloque International Géochimie de l'Uranium 2003), Edited by Cuney, M., Proceedings of International Conference (Extended Abstracts), Unité Mixte de Recherche - Géologie et Gestion des Ressources Minérales et Enérgetiques, 7566 Nancy, France, 409 p., p. 55 - 58

Anonymous Editor(s)), 2002
Uranium 2001: Resources, Production and Demand
Joint Report by the OECD Nuclear Energy Agency and the International Atomic Energy Agency, OECD Nuclear Energy Agency and International Atomic Energy Agency, International Atomic Energy Agency, Vienna, Red Book, 348 p..

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

Bernier, S.; Jefferson, C. W.; Drever, G. L., 2001
Aspects of the Stratigraphy of the Manitou Falls Formation, Athabasca Basin, in the Vicinity of McArthur River Uranium Deposit, Saskatchewan
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. 291 - 296

Bonhoure, J.; Kister, Ph.; Cuney, M.; Deloule, E., 2005
Ion Microprobe CAMECA IMS-3f: REE and Isotopic U-Pb Analyses of Uranium Oxide
Topic: Uranium Geology & Deposits, In Symposium on Uranium Production and Raw Materials for Nuclear Fuel Cycle - Supply and Demand, Economics, the Environment and Energy Security (IAEA-CN-128): Extended Synopses, Edited by Anonymous, International Atomic Energy Agency Conference (International Symposium), IAEA in co-operation with OECD/NEA, WNA, NEI and UN-ECE, International Atomic Energy Agency, CN-128, 344 p., p. 62 - 66

Cumming, G. L.; Krstic, D., 1992
The Age of Unconformity-Related Uranium Mineralization in the Athabasca Basin, Northern Saskatchewan
Canadian Journal of Earth Sciences, Volume 29, p. 1623 - 1639

Gandhi, S. S., 1995
An Overview of the Exploration History and Genesis of Proterozoic Uranium Deposits in the Canadian Shield
Exploration and Research for Atomic Minerals, Department of Atomic Energy, India, Volume 8, p. 1 - 48

Jefferson, C. J.; McGill, B. D.; Thomas, D. J.; Marlatt, J. L.; McHardy, S.; Drever, G. L.; Sopuck, V. J., 2002
McArthur River Mine
Chapter 5, In Field Trip A1: the Eastern Athabasca Basin and its Uranium Deposits, May 24-26, 2002, GAC-MAC Saskatoon 2002, Edited by Andrade, N; Breton, G.; Jefferson, C. W.; Thomas, D. J.; Tourigny, G.; Wilson, S.; Yeo, G. M., Field Guide Book, Geological Association of Canada - Mineralogical Associationof Canada, Geological Association of Canada, 102 p., p. 73 - 89

Jefferson, C. W.; Ramaekers, P.; Delaney, G.; Thomas, D. J.; Cutts, C.; Olson, R. A., 2005
Exploration for Unconformity-Associated Uranium deposits: Learning from EXTECH IV Athabasca Basin Multidisciplinary Study, Canada
Topic: Uranium Geology & Deposits, In Symposium on Uranium Production and Raw Materials for Nuclear Fuel Cycle - Supply and Demand, Economics, the Environment and Energy Security (IAEA-CN-128): Extended Synopses, Edited by Anonymous, International Atomic Energy Agency Conference (International Symposium), IAEA in co-operation with OECD/NEA, WNA, NEI and UN-ECE, International Atomic Energy Agency, CN-128, 344 p., p. 84 - 87

Jefferson, C. W.; Thomas, D. J.; Gandhi, S. S.; Ramaekers, P.; Delaney, G.; Brisbin, D.; Cutts, C.; Portella, P.; Olson, R. A., 2007
Unconformity-associated uranium deposits of the Athabasca Basin, Saskatchewan and Alberta
In EXTECH IV: Geology and Uranium EXploration TECHnology of the Proterozoic Athabasca Basin, Saskatchewan and Alberta, Edited by Jefferson, C. W.; Delaney, G., Bulletin, Geological Survey of Canada, 588

Lewry, J. F., 1978
A Review of Pre-Athabasca Basement Geology in Northern Saskatchewan
In Uranium Exploration Techniques: 1978 November 16-17 Regina Symposium Proceedings, Edited by Parslow, G. R., Special Publication, Saskatchewan Geological Society, 4, 330 p., p. 19 - 58

Lewry, J. F.; Sibbald, T. I. I., 1980
Thermotectonic Evolution of the Churchill Province in Northern Saskatchewan
Tectonophysics, Volume 68, p. 45 - 82

Lewry, J. F.; Collerson, K. D., 1990
The Trans-Hudson Orogen: Extent, Subdivision and Problems
In The Early Proterozoic Trans-Hudson Orogen, Edited by Lewry, J. F.; Stauffer, M. R., Special Paper, Geological Association of Canada, Geological Association of Canada, 37, p. 1 - 14

Lewry, J. F.; Stauffer, M. R. Editor(s)), 1990
The Early Proterozoic Trans-Hudson Orogen
Special Paper, Geological Association of Canada, Geological Association of Canada, 37

Marlatt, J.; McGill, B.; Matthews, R.; Sopuck, V.; Pollock, G., 1992
The Discovery of the McArthur River Uranium Deposit, Saskatchewan, Canada
In New Developments in Uranium Exploration and Resources: Proceedings of a Technical Committee Meeting, Vienna, August 1991, Edited by Anonymous, TECDOC, International Atomic Energy Agency and the Nuclear Energy Agency of the Organization for Economic Cooperation and Development, International Atomic Energy Agency, Vienna, Austria, 650, p. 118 - 127

McGill, B. D.; Marlatt, J. L.; Matthews, R. B.; Sopuck, V. J.; Homeniuk, L. A.; Hubregeste, J. J., 1993
The P2 North Uranium Deposit, Saskatchewan, Canada
Exploration and Mining Geology, Volume 2, p. 321 - 331

Money, P. L., 1968
The Wollaston Fold-belt System, Saskatchewan and Manitoba
Canadian Journal of Earth Sciences, Volume 5, p. 1489 - 1504

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

Ramaekers, P.; Jefferson, C. W.; Yeo, G. M.; Collier, B.; Long, D. G. F.; Drever, G.; McHardy, S.; Jiricka, D.; Cutts, C.; Wheatley, K.; Catuneanu, O.; Bernier, S.; Kupsch, B.; Post, R., 2007
Revised geological map and stratigraphy of the Athabasca Group, Saskatchewan and Alberta
In EXTECH IV: Geology and Uranium EXploration TECHnology of the Proterozoic Athabasca Basin, Saskatchewan and Alberta, Edited by Jefferson, C. W.; Delaney, G., Bulletin, Geological Survey of Canada, 588

Ruzicka, V., 1993
Unconformity-type Uranium Deposits
Section Models for Sediment-hosted and Volcanic-related Deposits, In Mineral Deposit Modeling, Edited by Kirkham, R. V.; Sinclair, W. D.; Thorpe, R. I.; Duke, J. M., Special Paper, Geological Association of Canada, Geological Association of Canada, 40, 798 p., p. 125 - 149

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

Thomas, D. J.; Mathews, R. B.; Sopuck, V., 2000
Athabasca Basin (Canada) - Unconformity-type Uranium Deposits: Exploration Model, Current Mine Development and Exploration Directions
In Geology and Ore Deposits 2000: the Great Basin and Beyond; May 15 - 18, 2000 Symposium Proceedings (CD-ROM), Edited by Cluer, J. K.; Price, J. G.; Struhsacker, E. M.; Hardyman, R. F.; Morris, C. L., Symposium Proceedings, Geological Society of Nevada, Geological Society of Nevada, Reno, Nevada, 647 p., p. 103 - 126

Thomas, D. J.; Jefferson, C. W.; Card, C.; Yeo, G.; Sopuck, V., 2002
Introduction: the Eastern Athabasca Basin and its Uranium Deposits
Chapter 1, In Field Trip A1: the Eastern Athabasca Basin and its Uranium Deposits, May 24-26, 2002, GAC-MAC Saskatoon 2002, Edited by Andrade, N; Breton, G.; Jefferson, C. W.; Thomas, D. J.; Tourigny, G.; Wilson, S.; Yeo, G. M., Field Guide Book, Geological Association of Canada - Mineralogical Associationof Canada, Geological Association of Canada, 102 p., p. 1 - 22

Wasyliuk, K., 2002
Petrogenesis of the Kaolinite-group Minerals in the Eastern Athabasca Basin of Northern Saskatchewan: Applications to Uranium Mineralization
M. Sc., University of Saskatchewan, Saskatoon, Saskatchewan, 140 p.

Production data: Report period: from 2000-01 until 2001-12-31; 92,400 metric ton ore; Provisional entry?: yes; Yearly or summary?: S
Grade-commodity information:U: 9.06 percent
weight-commodity information:U: 8,374 metric ton
Reference: Saskatchewan Industry and Resources, 2001: Saskatchewan Mineral Deposits Index; Government of Saskatchewan, Geological Atlas of Saskatchewan, Internet
Percent weights allocated to deposit: 0.0%
Resource data:
Disclaimer - Reserves/Resource Data

Her Majesty the Queen in Right of Canada, represented by the Minister of Natural Resources (NRCan) does not warrant or guarantee the accuracy, completeness or fitness for any purpose of Reserve and Resource information (Data) contained in this database, including whether the Data is compliant with any securities regulations or standards, and NRCan does not assume any liability with respect to any damage or loss incurred as a result of the use made of the Data.

Resource and reserve figures are historical in nature. The Data source provided with each set of figures should be cited if the Data are re-reported.

Estimate date: 2001-12-31; 0.898 million metric tons ore; Combined with production?: no; Provisional entry?: no; Resource category: Reasonably Assured
Grade-commodity information:U: 19.775 percent
Reference: Jefferson, C. J.; McGill, B. D.; Thomas, D. J.; Marlatt, J. L.; McHardy, S.; Drever, G. L.; Sopuck, V. J., 2002: McArthur River Mine; Chapter 5, In Field Trip A1: the Eastern Athabasca Basin and its Uranium Deposits, May 24-26, 2002, GAC-MAC Saskatoon 2002, Edited by Andrade, N; Breton, G.; Jefferson, C. W.; Thomas, D. J.; Tourigny, G.; Wilson, S.; Yeo, G. M., Field Guide Book, Geological Association of Canada - Mineralogical Associationof Canada, Geological Association of Canada, 102 p., p. 73 - 89
Percent weights allocated to deposit: 100.0%
Associated mine(s): McArthur River (P2 North) Uranium Mine (40012)

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