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File Created: 24-Jul-85 by BC Geological Survey (BCGS)
Last Edit:  22-May-12 by Larry Jones(LDJ)

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NMI 082E10 U3
Name BLIZZARD, BEVERLY, MORAIG, PATRICIA Mining Division Greenwood
BCGS Map 082E066
Status Developed Prospect NTS Map 082E10W
Latitude 49º 37' 27" N UTM 11 (NAD 83)
Longitude 118º 55' 14" W Northing 5498617
Easting 361294
Commodities Uranium, Zinc Deposit Types D04 : Basal U
Tectonic Belt Omineca Terrane Overlap Assemblage, Plutonic Rocks
Capsule Geology

The Blizzard uranium deposit is located 2.5 kilometres north of Lassie Lake and approximately 11.75 kilometres northwest of the Kettle Valley community of Christian Valley.

The area is underlain by granite and granodiorite of the Cretaceous-Tertiary Okanagan Batholith, and by quartz monzonite of an unnamed Middle Jurassic intrusion to the southeast. Metasediments of the Carboniferous-Permian Anarchist Group outcrop several kilometres to the southwest. The Miocene-Pliocene Chilcotin Group occurs as isolated, flat-lying, cap rocks consisting of vesicular and massive columnar olivine basalt flows with occasional interformational sediments. A potassium/argon age of 5.1 plus or minus 0.50 Ma was determined for the basalt (Geological Survey of Canada Open File 1969). Miocene fluvial sediments underlying the basalts are unconsolidated, interbedded arkosic sandstones, siltstones, carbonaceous mudstones, and basal conglomerates. These sediments occur as structurally controlled 'paleochannels', which are host to uranium deposits.

The Blizzard deposit occurs along a sinuous southeast trending paleochannel, with a plunge of 1.5 degrees. Mineralization has been traced over a 1600 metre length, with widths from 60 to 265 metres and true thickness from 1 to 24 metres. The deposit is from 2 to 90 metres below surface. The deposit is covered by plateau basalt, except at the southern end, which has a maximum thickness of 74 metres. The largest proportion of the uranium is concentrated in two ore zones, one in mudstone-sandstone beds and the other in sandstones immediately overlying basal conglomerate. At the northern end of the deposit uranium occurs within basal conglomerates and along the basalt-sandstone contact. The basement rocks to the fluvial sediments are mainly Okanagan Batholith rocks.

Uranium mineralogy is represented by the uranyl and uranous phosphate minerals, saleeite, ningyoite, and autunite. Minor concentrations of pitchblende apparently replaces ningyoite pseudomorphically. Saleeite and ningyoite commonly cement carbonaceous rich quartzose-feldspathic sediment, whereas, ningyoite is the only ore mineral present in mudstone or at limonitized sandstone-mudstone interfaces. Autunite is confined to the basal sedimentary members and the northern part of the basement complex, occurring within fractures. Other minerals include pyrite, which increases to the south of the deposit, marcasite, gypsum, rozenite, jarosite and trace sphalerite and carnotite.

At the north end of the deposit, a 30 by 80 metre breccia pipe intrudes the sediments and was likely the vent for an early flow, which was then weathered and partly eroded by a later flow. This breccia has a fine-grained basalt and minor sand matrix containing abundant fragments and larger blocks of sedimentary material and intrusive basement rocks. The oxidation nature of the breccia pipe decreases with depth until, in the deepest part, there is only green basalt/diabase fragments in a pale green aphanite. Radioactivity also decreases with depth. The top of the peperite shows intense argillic and chloritic alteration. Ningyoite is the main uranium mineral present.

The Blizzard deposit is a hydrogenic paleochannel deposit. Uranium was leached from surrounding felsic intrusive and extrusive rocks and transported by deep-seated, ground waters into a structurally controlled paleochannel. The ground waters were rapidly acidified and uranium minerals were precipitated within the Miocene sandstones and carbonaceous mudstones. The deposit was preserved by the overlying basalts and glacio-lacustrine sediments.

The property was staked by Lacana Mining Corporation in 1976. It was then optioned to a joint venture group comprised of Norcen Energy Resources Limited (Operator), Campbell Chibougamau Mines Ltd. E & B Explorations Ltd. and Ontario Hydro. In 1977, the joint venture drilled 52 rotary and diamond-drill holes; and in 1978, an additional 341 holes were drilled. A total of 21,184 metres of drilling in 478 holes was completed prior to the uranium moratorium in 1980. The drill core was subsequently buried on the site in 1980.

The ore reserves of the Blizzard deposit are estimated to be 2,200,000 tonnes grading 0.182 per cent uranium (0.214 per cent U3O8) at a cutoff grade of 0.021 per cent uranium (0.025 per cent U3O8) over a 1-metre interval. Conversion used for U3O8 to uranium is 0.848 (Canadian Mining Journal, April 1979). Assessment Report 7822 reports a total of 4736 tonnes U3O8 is in the deposit.

In July 2006 Boss International Gold Corp. (now called Boss Power Corp.) acquired the Blizzard property from Santoy Resources Ltd. A technical report filed by the company in June of 2007 (www.sedar.com) contains re-classified resource calculations from the 1979 Kilborn Feasibility study to reflect current usage. Indicated resources of 1.9 million tonnes grading 0.247 per cent U3O8 and Inferred resources of 4685 tonnes grading 0.162 per cent U3O8 were reported.

Bibliography
EM COMM FILE Uranium
EMPR ASS RPT 6167, 6168, *6640, 7131, *7822, 26080, 26368, 26698, 26991, 27257
EMPR EXPL 1976-29, 30; 1977-31, 32; 1978-31; 1979-35
EMPR FIELDWORK 1977, p. 12
EMPR PRELIMINARY MAP *29
EMPR OF 1994-8
EMPR P *1979-6, pp. 27-29,33,47
EMPR PF (Sawyer, D.A. (1978-05-23): Environmental Introduction and Possible Project Progression; Loucks, W.A. (1978-12-20): Press Release on Blizzard Property; Boyle, D.R. (1979): Dispersion of Uranium in the Vicinity of Miocene Basal Type Uranium Occurrences in the Lassie Lake Area; Turner, A.T. (1980-07-06): Deactivation Project (Core Burial) - Blizzard Property; Day, S.J. (1987): Basal-type Gold-Uranium Deposits)
EMPR RGS 29
EMR MIN BULL MR 223 B.C. 15
EMR MP CORPFILE (Lacana Mining Corporation; Norcen Energy Resources
Limited; Campbell Chibougamau Mines Ltd.; E & B Explorations
Ltd.)
GSC MAP 6-1957; 1701A; 1712A; 1713A; 1714A; 1736A
GSC OF 409; 551; 736; *1969
GSC P 79-1A, pp. 349-356; 81-23, pp. 37-47
Canadian Mineralogist, 1981, Vol. 19, pp. 325-331
CIM BULL Dec. 1978, p.64; Mar. 1979, Vol.72, No.803, p.96;
Aug. 1980, Vol.73, No.820, pp. 89-108
CIM Special Vol. 33, 1986, (Uranium Deposits of Canada), pp. 309-320
CMJ *Apr. 1979, Vol.100, No.4, pp. 44-47
ECON GEOL *Vol.77, 1982, pp. 1176-1209
GCNL #157,#192, 1977; #92,#103,#108,#142,#174,#218 1978; #110, 1979;
#63,#203, 1983
N MINER Dec.29, 1977; Apr.27, May 11,18, June 1,8, July 19,27,
Sept.28, Nov.16, Dec.28, 1978; May 10, June 14, Aug.23, 1979;
Oct.27, Dec.8, 1983; Jan.5, 1987; Oct.8, 2005
PR REL Santoy Resources Ltd., Aug.9, Sept.28, 2005; Jan.27, 2006
W MINER Feb. 1979, p.17; Apr. 1979, p.108; Nov. 1983
*Bates, D.V., Murray, J.W. and Raudsepp, V. (1980): Royal Commission
of Inquiry, Health and Environmental Protection, Uranium Mining;
Commissioners' Report, October 30, 1980, Vol.1, pp. 32-34,181-182
Bell, R.T. (1985): Overview of Uranium in Volcanic Rocks of the
Canadian Cordillera in IAEA, 1985, Vol. STI/PUB/690-Uranium in
Volcanic Rocks, p. 331
*Sawyer, D.A., Turner, A.T., Christopher, P.A. and Boyle, D.R.
(1981): Basal Type Uranium Deposits, Okanagan Region, South
Central British Columbia; Field Guides to Geology and Mineral
Deposits, Calgary, GAC/MAC, CGU, pp. 69-77

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