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


DEPNO COUNTRY LOCATION ALLNAMES COMMODITIES
40050 Canada (Nunavut) 67.16.59 N -- 116.55.22 W Mountain Lake Deposit; PEC-YUK Deposit; PEC Deposit; PEC Group; YUK (Imperial Oil) U; Cu; Ag

Database name: Uranium Deposits, Athabasca Basin
Custodial agency: Geological Survey of Canada
Compilers: Sunil S. Gandhi
Release date: 2007-03-02
   
Deposit name(s): Mountain Lake Deposit (occurrence name); PEC-YUK Deposit (occurrence name); PEC Deposit (occurrence name); PEC Group (claim name); YUK (Imperial Oil) (claim name)
Political location(s): Canada; Province or state: Nunavut; Nearest community: Kugluktuk (formerly Coppermine) (100 km SW)
NTS map data: 086N07 (Teshierpi Mountain)
Deposit clan (type): Sandstone
Deposit (sub) types: Sandstone - tabular; Stratabound stacked lenses, with 2 major ones, within a 40 m thick stratigraphic zone in upper part of LeRoux Formation; little deformed; affected by steep faults, with some mineralization along them ; Reference: Trigg, C. M., 1986: PEC Uranium Deposit, Hornby Bay Basin, Northwest Territories; 5, Section Other Helikian Unconformity-associated and Sedimentary-hosted Deposits, 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. 295 - 302
Deposit status: drilled showing; Size category: medium; Status comments: drilling during late 1970s indicated resources of 900 kt of ore averaging  0.3 % viz., 2,700 t U, and additional lower grade resources; at 75 to 150 m depth, with 60 m overburden, thus open pittable
Geologic province: Coppermine Homocline
Geologic subprovince: Hornby Bay-Dismal Lakes Basin
Geologic district: Northern Great Bear Magmatic Zone
Deposit object located: deposit centre (surface proj.)
Commodities: U; Cu; Ag
Mineralization styles: stacked lenses (mineralization zone); disseminated (mineralization zone); cavity - fill (mineralization zone); aggregates (mineralization zone); fracture fill (mineralization zone)
Geological ages: Middle Mesoproterozoic (host rocks)
Late Mesoproterozoic (mineralization)
Tectonic setting: continental marginal platform-intracratonic; stable; Formal name: Coppermine Homocline (host rocks)
Coincident features: strata-bound (Gently dipping host quartz arenite formation is capped by black and green sandy shale, deposited in marine-deltaic environment, of Fort Confidence For); Coincident feature name: LeRoux Formation
lithological contact(s) (Intracratonic Forward orogeny deformed pre-orogenic Hornby Bay Group; the Dismal Lakes Group was deposited on it after the structures were peneplanned); Coincident feature name: Sub-Dismal Lakes Group unconformity
fault(s) (A major brittle northeast fault, with right-lateral and west-side down movements that affected sedimentation of the Hornby Bay and Dismal Lakes groups); Coincident feature name: Teshierpi Fault
fault(s) (NE-trending steep fault predates Dismal Lakes Group; later movements on it include post-ore vertical displacement of 60 m; hosts some high grade veins); Coincident feature name: Imperial Fault
fault(s) (This fault is parallel to and between the Teshierpi and Imerial faults, and has south-side down displacement that likely reflects the latest movement ); Coincident feature name: Aquitaine Fault
Regional tectonic structure: faults (these faults affected the whole Great Bear magmatic zone, were reactivated later and controlled deposition of the Hornby Bay and Dismal Lakes groups) Tectonic structure name: NE-trending brittlle faults
Host rocks: (1) sedimentary; sandstone-siltstone (basal unit of Dismal Lakes Group exposed on south side of the deposit, covered by younger strata and glacial drift elsewhere); Depositional setting: continental; Metamorphic grade: unmetamorphosed; Component: mineralization zone
External host rock forms:tabular sedimentary body
Host rock protoliths:sandstone (quartz arenite with local conglomeratic litharenite at base; deposited in mixed fluvial-marine environment); Host rock protolith name: Le Roux Formation
Internal host rock structures:parallel bedding
cross bedding
Individual lithologies:sandstone (white-grey medium-bedded quartz arenite with tabular-planar and cross-stratification)
Host rock stratigraphy:Le Roux Formation
Related igneous rocks: (1) volcanic; mafic volcanic rocks; Initials: Coppermine Plateau Basalts; Magma series: calc-alkaline; Depositional setting: continental
Individual lithologies:basalt (extensive flows north of the deposit likely existed above the uranium deposit at the time of initial mineralization)
Country rocks: (1) felsic volcanics; (the 1.87-1.84 Ga old volcanics and related granites form the basement of the Mesoproterozoic strata); Country rock name: Sloan Group of McTavish Supergroup; Metamorphic grade: unmetamorphosed
Country rock protoliths:dacite-rhyodacite-rhyolite (little deformed continental calc-alkaline volcanics of the Great Bear magmatic zone of the Wopmay orogen); Country rock protolith name: Sloan Group of McTavish Supergroup
Individual lithologies:dacite-rhyodacite-rhyolite (sequence of flows, ignimbrites, lithic fragmentals, volcaniclastic siltstones and mudstones; more than 5 km thick)

(2) granite; (granitic plutons emplaced during 1870-1840 Ma); Country rock name: Great Bear plutonic suite; Metamorphic grade: unmetamorphosed
Country rock protoliths:granite-granodiorite (essentially undeformed and unaltered granitic intrusions of the Great Bear continental arc); Country rock protolith name: Great Bear plutonic suite
Individual lithologies:granite-granodiorite-monzonite (early stage small plutons of quartz monzonites, followed by larger granite-granodiorite and syenogranite plutons)

(3) conglomerate-sandstone-dolomite; (lower group of the Coppermine Homocline deposited on the Great Bear magmatic zone); Country rock name: Hornby Bay Group; Metamorphic grade: unmetamorphosed
Country rock protoliths:conglomerate-arkose (includes the basal conglomerate-sandstone unit 8, dolomite-chert unit 9 sandstone unit 10; local Narakey volcanics dated at 1684 Ma); Country rock protolith name: Hornby Bay Group
Individual lithologies:conglomerate-sandstone-dolomite-sha

(4) clastic sediments; (overlies the Hornby Bay Group and is overlaind by the Coppermine basalts); Country rock name: Dismal Lakes Group; Metamorphic grade: unmetamorphosed
Country rock protoliths:sandstone-siltstone-carbonate (conglomerate-sandstone unit 11 hosts the deposit; black shale-sandstone unit 12; and red dolomitic mudstone-sandstone unit 13); Country rock protolith name: Dismal Lakes Group
Individual lithologies:conglomerate-sandstone-dolomite-sha (basal conglomerate contains clasts of Great Bear volcano-plutonic rocks and folded Hornby Bay Group rocks; overlain by quartzitic sandstones and shale)

(5) plateau basalts; (thick and extensive sequence of plateau basalts in the northern part of Coppermine Homocline); Country rock name: Coppermine River Group; Metamorphic grade: unmetamorphosed
Country rock protoliths:basalt (part of the Mackenzie igneous event that includes coeval Muskox intrusion and Mackenzie diabase dyke swarm dated at 1270 Ma); Country rock protolith name: Coppermine River Group
Individual lithologies:basalt (Continental tholeiitic plateau basalt flows, associated volcaniclastics and related Mackenzie diabase dyke swarm)
Metallogenic signatures: U
U-Cu-Ag
Alteration signatures: oxidation: various secondary uranium minerals; What was altered: pitchblende; Component: mineralization zone
hematization: hematite, limonite (goethite); What was altered: magnetite and pyrite; Component: mineralization zone
chlorite alteration: chlorite; What was altered: mafic silicates in host rock; Component: mineralization zone
argillic alteration: clay minerals, hematite coating, secondary silica; What was altered: feldspars and clay minerals in sandstone; Component: mineralization zone
silicic alteration: quartz overgrowths and cavity-fillings; What was altered: sandstone host; Component: mineralization zone
Mineralogy: (alteration / mineralization zone): biotite
(alteration / alteration halo): chlorite, clay minerals
(gangue minerals / alteration halo): goethite, hematite
(gangue minerals / mineralization zone): magnetite, quartz, barite, calcite
(mineralization / mineralization zone): pitchblende, coffinite
(mineralization / enriched zone - oxidized): uranium oxides - sooty black, torbernite, carnotite, cuprosklodowskite, zeunerite
(mineralization / mineralization zone): pyrite, marcasite, chalcopyrite, chalcocite, covellite, digenite
(mineralization / enriched zone - oxidized): azurite, malachite
(mineralization / mineralization zone): arsenopyrite
(mineralization / alteration halo): glaucodot
(mineralization / mineralization zone): niccolite, bravoite
Radiometric ages: Object dated: Mineralogy(1); Age - Ma: 1,976; +96; -96; Dating method: U-Pb; Concentrate: pitchblende; Source rock: uranium ore (high grade); Event dated: mineralization (early); Interpretive comment: five drill core samples; 2 analyses from each provide similar age from isochron and discordia plots; Reference: Miller, R. G., 1982: The Geochronology of uranium deposits in the Great Bear batholith, NT (V19NO7P1428); Canadian Journal of Earth Sciences, Volume 19, p. 1428

Object dated: Mineralogy(1); Age - Ma: 754; Dating method: U-Pb; Concentrate: pitchblende; Source rock: uranium ore (high grade); Formal name: remobilized ore; Event dated: mineralization; Interpretive comment: the Pb/Pb age from one drill core sample is interpreted as representing a post-mineralization event; Reference: Gandhi, S. S., 1986: Mountain Lake Deposit, Northwest Territories; 5, Section Other Helikian Unconformity-associated and Sedimentary-hosted Deposits, 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. 293 - 294

Object dated: country rocks(3); Age - Ma: 1,663; +8; -8; Dating method: U-Pb; Concentrate: zircon; Source rock: felsic volcanics; Formal name: Narakay Volcanic Complex; Event dated: country rock; Interpretive comment: Felsic volcanics interbedded with the uppermost formation of Hornby Bay Group give its minimum age; Reference: Bowring, S. A.; Ross, G. M., 1985: Geochronology of the Narakay Volcanic Complex: Implications for the Age of Coppermine Homocline and Mackenzie Igneous Events; Canadian Journal of Earth Sciences, Volume 22, p. 774 - 780

Object dated: country rocks(5); Age - Ma: 1,269; +1; -1; Dating method: U-Pb; Concentrate: baddeleyite; Source rock: gabbro; Formal name: Muskox Intrusion; Event dated: country rock; Interpretive comment: Two baddleyite and one zircon fraction date the intrusion, Mackenzie dykes and Coppermine basalts; Reference: LeCheminant, A. N.; Heaman, L. M., 1989: Mackenzie Igneous Events, Canada: Middle Proterozoic Hotspot Magmatism Associated with Ocean Opening; Earth and Planetary Science Letters, Volume 96, p. 38
Deposit shape: stacked lenses; Component: mineralization zone
Deposit dimensions:length: 1,100 metre
width: 340 metre
thickness: 40 metre
Qualified comments: (Applies to: discovery and development) Airborne radiometric survey conducted in 1969 by Aquitaine Company of Canada Ltd., located isolated mineralized sandstone exposures (Mountain Lake Showings) about 1.4 km southwest of the blind deposit, and also several radioactive boulders. The PEC claims were staked to cover them. Further exploration during 1969 to 1980 was conducted by the company (later Kidd Creek Mines Ltd.), under the PEC Joint Venture with Siebens Ltd. (subsidiary of Dome Petroleum), Eldorado Nuclear Ltd., and later Cominco Ltd. The work included detailed airborne and ground radiometric surveys, geological mapping, radon in soil, lake water and lake sediment surveys, VLF EM, magnetic, IP and resistivity surveys. In addition it included 57 diamond drill holes totalling 5428 m. In 1972, Trigg, Woollet, Olson Consulting Ltd., on behalf of Esso Resources Canada Ltd (Imperial Oil Ltd.), conducted a helicopter-borne radiometric survey and prospecting, which discovered numerous radioactive sandstone boulders for several kilometres to the north and west of the PEC claims, and staked the adjoining YUK claims. Further work included geological mapping and ground geophysical surveys. Diamond drilling was undertaken in 1975 but the results were not encouraging. Further study of dispersed radioactive boulders and additional diamond drilling in 1976 eventually led to mineralized intersections in a hole just north of the PEC claim boundary at 75 to 150 m beneath the 60 m thick overburden. A total of 10794 m were drilled in 109 holes to outline the deposit. They defined the length of deposit to the north-east, which also extends to the southwest in the PEC claims. Little work was done on the deposit for some 15 years. In 2006 Triex Minerals Corp. acquired the property that included both the PEC and YUK claims, and has undertaken a drill program of 3100 m to further evaluate the deposit in joint venture with Pitchstone Exploration Ltd.

(Applies to: reserve/resource assays) Resource potential of the Mountain Lake deposit (PEC-YUK claims) was first mentioned by Gandhi (1980, p. 32) as probably in the order of a million tons or so of ore with grades in the range of typical sandstone-type deposits in the southwestern United States, in particular the 'stacked' deposits in the Upper Jurassic Morrison Formation in the Grants Mineral Belt in New Mexico. A more detailed estimate published by Trigg (1985, p. 302) is 3150 tonnes of U3O8 (2671.2 t U), based on a minimum grade of 0.10 % U3O8 (0.0848 % U), a minimum thickness of 1.5 m and specific gravity of 2.5. A more detailed recalculation of inferred resources by Gandhi in 1985 for a confidential report to the Uranium Resource Assessment Group at the Geological Survey of Canada, based on grade contours for the upper, lower and subsidiary zones, gave a total of 1.51 Mt averaging 0.17 % U (2567 t U) at the cut-off grade of 0.115 % U. It included 0.412 Mt averaging 0.157 % U. The most recent estimate is in the April 2006 newsletter of Triex Minerals Ltd., and their NI-43-101 Technical Report on SEDAR website, which gives inferred resources of 8.2 million lbs of U3O8 (3154 t U) with an average grade of 0.23% U3O8 (0.195 % U) contained in 1.6 million tonnes of rock.

(Applies to: genetic model) This is the best example of 'sandstone-type' uranium mineralization in Canada. It formed during the Mesoproterozoic time which lacked organic debris in continental environment, that played an important part in formation of the Phanerozoic sandstone deposits. Reductant needed for its formation is believed by most workers to have been provided by the overlying black shales, which in addition likely constrained upward flow of the oxidized uraniferous solution. The host basal strata of the Dismal Lakes Group postdate the gently folded, ca. 1680 Ma old Hornby Bay Group, and predate the 1270 Ma Mackenzie igneous event. The uppermost part of the Dismal Lakes Group was deposited at the time of the igneous event as indicated by doming, karsting and syndepositional faults in these strata in the roof region of the Muskox intrusion, which is part of the igneous event (Kerans, 1983). The isotopic ages from the deposit are younger than this event, and reflect lead loss in open system. The initial uranium deposition likely occurred before the extrusion of thick and extensive basalts and intrusion of related sills. The main part of the deposit is stratiform in the upper part of the host sandstone unit, but channel-type mineralization occurs near the basal unconformity in the southwest part of the deposit. Remnants of deposit are preserved in outcrops to the southwest where unconformity with the gently folded strata of the Hornby Bay Group is exposed. It is thus apparent that the unconformity played an important role in flow of the uranium-bearing waters. Later fault movements redistributed or added to the initial uranium concentration. Role of the pre-existing faults in initial mineralization remains obscure. Several other uranium occurrences in laterally extensive host unit indicate that this type of mineralization was widespread. Glacial erosion of the gently-dipping Mountain Lake deposit has led to widespread dispersion of mineralized boulders to the northwest.
Links to other databases: NORMIN; Key value: 086NSE0122
GSC U-Th File (Prasad); Key value: 9272
GSC U-Th File (Prasad); Key value: 9403
Geophysical-chemical signature: Signature type: Airborne Radiometrics; Response type: positive (moderate)
Signature type: Ground Radiometrics; Response type: positive (strong)
References:
Ahuja, S. P., 1973
Imperial Oil Limited, Mountain Lake Area, Mackenzie (080161)
Mineral Assessment Report, Imperial Oil Ltd; Trigg, Woollett and Associates Ltd (operator), Indian and Northern Affairs Canada, Publication code 080161

Ahuja, S. P., 1974
Imperial Oil Limited, Mountain Lake Area, Mackenzie (061346)
Mineral Assessment Report, Imperial Oil L; Trigg, Woollett+assocs L (operator), Indian and Northern Affairs Canada, Publication code 061346

Ahuja, S. P., 1974
Imperial Oil Limited, Mountain Lake Area, Mackenzie (080160)
Mineral Assessment Report, Imperial Oil Ltd; Trigg, Woollett and Associates Ltd (operator), Indian and Northern Affairs Canada, Publication code 080160

Ahuja, S. P., 1976
Imperial Oil Limited, Dismal Lakes Area, Mackenzie (061536)
Mineral Assessment Report, Imperial Oil L; Trigg, Woollett+assocs L (operator), Indian and Northern Affairs Canada, Publication code 061536

Ahuja, S. P., 1977
Imperial Oil Limited, Dismal Lakes Area, Mackenzie (080885)
Mineral Assessment Report, Imperial Oil L; Trigg, Woollett+assocs L (operator), Indian and Northern Affairs Canada, Publication code 080885

Arnaud, M.; Salat, H., 1971
Aquitaine Company of Canada Limited, Dismal Lakes (019191)
Mineral Assessment Report, Indian and Northern Affairs Canada, Publication code 019191

Aspler, L. B.; Pilkington, M.; Miles, W. F., 2003
Interpretations of Precambrian Basement based on Recent Aeromagnetic Data, Mackenzie Valley, Northwest Territories
Current Research - Geological Survey of Canada, Volume 03-2C, p. 1 - 11

Baragar, W. R. A.; Donaldson, J. A., 1973
Dismal Lakes, District of Mackenzie (1338A)
Geological Survey of Canada, 1338A

Bizard, C.; Salat, H., 1971
Aquitaine Company of Canada Limited, Dismal Lakes (019192)
Mineral Assessment Report, Indian and Northern Affairs Canada, Publication code 019192

Bowring, S. A.; Ross, G. M., 1985
Geochronology of the Narakay Volcanic Complex: Implications for the Age of Coppermine Homocline and Mackenzie Igneous Events
Canadian Journal of Earth Sciences, Volume 22, p. 774 - 780

Cook, D. G.; MacLean, B. C., 1995
The Intracratonic Paleoproterozoic Forward Orogeny, and Implications for Regional Correlations, Northwest Territories, Canada
Canadian Journal of Earth Sciences, Volume 32, p. 1991 - 2008

Gandhi, S. S., 1978
Geological Observations and Exploration Guides to Uranium in Bear and Slave Structural Provinces and the Nonacho Basin
Current Research - Geological Survey of Canada, Volume 78-1B, p. 141 - 149

Gandhi, S. S., 1980
Mountain Lake Deposit (PEC-YUK Claims), Northeastern Mackenzie District
5, Section Description of Proven and Significant Deposits, In Non-hydrocarbon Mineral Resource Potential of Parts of Northern Canada, Edited by Anonymous, Open File, Geological Survey of Canada, Geological Survey of Canada, 716, 376 p., 2 maps, p. 31 - 32

Gandhi, S. S., 1986
Mountain Lake Deposit, Northwest Territories
5, Section Other Helikian Unconformity-associated and Sedimentary-hosted Deposits, 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. 293 - 294

Gandhi, S. S.; Paktunc, A. D., 1989
Au, Pt, and Pd in Pitchblende and Copper Sulphide Veins at the Rah, Far, and Jaciar Prospects, Northern Bear Province, Northwest Territories
Current Research - Geological Survey of Canada, Volume 89-1C, p. 243 - 253

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

Hasan, Z., 1976
Imperial Oil Limited, Mountain Lake Area, Mackenzie (061629)
Mineral Assessment Report, Imperial Oil Limited, Indian and Northern Affairs Canada, Publication code 061629

Hassard, F. R.; Woollett, G., 1975
Eldorado Nuclear Limited, Mountain Lake Area, Mack (080470)
Mineral Assessment Report, Indian and Northern Affairs Canada, Publication code 080470

Hassard, F. R.; Woollett, G. N., 1975
Imperial Oil Limited, Mountain Lake Area, Mackenzie (061406)
Mineral Assessment Report, Imperial Oil L; Trigg, Woollett+assocs L (operator), Indian and Northern Affairs Canada, Publication code 061406

Hassard, F. R., 1976
Imperial Oil Limited, Mountain Lake Area, Mackenzie (080691)
Mineral Assessment Report, Imperial Oil Ltd, Indian and Northern Affairs Canada, Publication code 080691

Hassard, F. R.; Woolett, G. N., 1976
Imperial Oil Limited, Dismal Lake Area, Mackenzie (080456)
Mineral Assessment Report, Imperial Oil L (operator), Indian and Northern Affairs Canada, Publication code 080456

Hassard, F. R.; Trigg, C. M., 1977
Imperial Oil Limited, Mountain Lake Area, Mackenzie (080745)
Mineral Assessment Report, Imperial Oil L; Trigg, Woollett and Associates Ltd, Indian and Northern Affairs Canada, Publication code 080745

Hassard, F. R., 1978
Imperial Oil Limited, Dismal Lakes Area, Mackenzie (080886)
Mineral Assessment Report, Imperial Oil L; Trigg, Woollett+assocs L (operator), Indian and Northern Affairs Canada, Publication code 080886

Hoffman, P. F., 1980
Wopmay Orogen - A Wilson Cycle of Early Proterozoic Age in the Northwest of the Canadian Shield
In The Continental Crust and its Mineral Deposits, Edited by Strangway, D. W., Special Paper, Geological Association of Canada, Geological Association of Canada, 20, 804 p., p. 523 - 549

Hoffman, P. F., 1984
Geology, Northern Internides of Wopmay Orogen, District of Mackenzie, Northwest Territories
Geological Survey of Canada, 1576A, Scale 1:250000

Kerans, C.; Ross, G. M.; Donaldson, J. A.; Geldsetzer, H. J., 1981
Tectonism and Depositional History of the Helikian Hornby Bay and Dismal Lakes Groups, District of Mackenzie
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. 157 - 182

Kerans, C.; Ross, G. M.; Donaldson, J. A., 1981
Stratigraphy, Sedimentation, and Tectonism in the Hornby Bay and Dismal Lakes Groups, Proterozoic, N.W.T.
In Mineral Industry Report, Northwest Territories, 1977 (EGS1981-11), Edited by Lord, C.; Laporte, P. J.; Gibbins, W. A.; Seaton, J. B.; Goodwin, J. A.; Padgham, W. A., Economic Geology Series, Indian and Northern Affairs Canada, Indian and Northern Affairs Canada, 1981-11, 202 p., p. 160 - 183

Kerans, C., 1982
Sedimentology and Stratigraphy of the Dismal Lakes Group, Proterozoic, Northwest Territories (1982-CKERANS)
Ph.D., Carleton University

Kerans, C., 1983
Timing of Emplacement of the Muskox Intrusion: Constraints from Coppermine Homocline Cover Strata
Canadian Journal of Earth Sciences, Volume 20, p. 673 - 683

LeCheminant, A. N.; Heaman, L. M., 1989
Mackenzie Igneous Events, Canada: Middle Proterozoic Hotspot Magmatism Associated with Ocean Opening
Earth and Planetary Science Letters, Volume 96, p. 38

Miller, R. G., 1982
The Geochronology of uranium deposits in the Great Bear batholith, NT (V19NO7P1428)
Canadian Journal of Earth Sciences, Volume 19, p. 1428

Ross, G. M.; Kerans, C., 1989
Geology, Hornby Bay and Dismal Lakes groups, Coppermine Homocline, District of Mackenzie (1663A)
Geological Survey of Canada, 1663A

Ruzicka, V., 1979
Uranium and Thorium in Canada, 1978 (79-1AP139)
Paper, Geological Survey of Canada, Geological Survey of Canada, Publication code 79-1AP139

Seaton, J. B., 1981
ML and YUK Claims
Section The Amundsen Basin, In Mineral Industry Report, Northwest Territories, 1977 (EGS1981-11), Edited by Lord, C.; Laporte, P. J.; Gibbins, W. A.; Seaton, J. B.; Goodwin, J. A.; Padgham, W. A., Economic Geology Series, Indian and Northern Affairs Canada, Indian and Northern Affairs Canada, 1981-11, 202 p., p. 100 - 101

Trigg, C. M., 1986
PEC Uranium Deposit, Hornby Bay Basin, Northwest Territories
5, Section Other Helikian Unconformity-associated and Sedimentary-hosted Deposits, 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. 295 - 302

Vagners, U. J., 1976
Imperial Oil Limited, Mountain Lake Area, Mackenzie (080692)
Mineral Assessment Report, Imperial Oil Ltd, Indian and Northern Affairs Canada, Publication code 080692

Wiley, W. E., 1979
Cominco Limited, Dismal Lake Area, Mackenzie (061954)
Mineral Assessment Report, Cominco Ltd (operator), Indian and Northern Affairs Canada, Publication code 061954

Yeo, G. M., 1981
Sandstone Stratigraphy and Uranium Potential of the Eastern Hornby Bay Basin
In Mineral Industry Report, Northwest Territories, 1977 (EGS1981-11), Edited by Lord, C.; Laporte, P. J.; Gibbins, W. A.; Seaton, J. B.; Goodwin, J. A.; Padgham, W. A., Economic Geology Series, Indian and Northern Affairs Canada, Indian and Northern Affairs Canada, 1981-11, 202 p., p. 132 - 147

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: 1986; 0.9 million metric tons ore; Combined with production?: no; Provisional entry?: no; Resource category: inferred
Grade-commodity information:U: 0.3 percent
weight-commodity information:U: 2,700 metric ton
Reference: Trigg, C. M., 1986: PEC Uranium Deposit, Hornby Bay Basin, Northwest Territories; 5, Section Other Helikian Unconformity-associated and Sedimentary-hosted Deposits, 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. 295 - 302
Percent weights allocated to deposit: 100.0%

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