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File Created: 24-Jul-1985 by BC Geological Survey (BCGS)
Last Edit:  04-Apr-2012 by Nicole Barlow (NB)

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NMI 082E10 U1
Name FUKI, DONEN Mining Division Greenwood
BCGS Map 082E056
Status Developed Prospect NTS Map 082E10W
Latitude 049º 32' 23'' UTM 11 (NAD 83)
Longitude 118º 53' 00'' Northing 5489161
Easting 363747
Commodities Uranium Deposit Types D04 : Basal U
Tectonic Belt Omineca Terrane Overlap Assemblage
Capsule Geology

The Fuki deposits, 1.5 kilometres apart, are located on the west side of Dear Creek, approximately 5.6 kilometres west of the Kettle Valley community of Christian Valley. There are several areas of mineralization which straddle the Beaver Creek Road and extend 2.5 kilometres to the south.

The area is underlain by granite and quartz monzonite of the Cretaceous-Tertiary Okanagan Batholith. Unconformably overlying the plutonic rocks are tuffs and flows and related volcaniclastic sediments of the Eocene Marron Formation, Penticton Group. The volcanics are cut by Eocene Coryell syenite and monzonite intrusives and dikes, and younger dacite feeder dikes, correlative with the Marron Formation.

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 5.0 plus or minus 0.50 Ma was determined for the basalt (Map 29). 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 Fuki deposits occur within a northeast trending paleochannel overlying biotite andesites and trachytes of the Eocene Penticton Group. Mineralization in the north part of the deposit is traced for about 1000 metres in length, 150 metres in width and up to 3 metres in thickness. Depth of the deposit is from 0 to 50 metres below surface except for the surface discovery outcrop, which measured 10 by 3 metres and assayed 0.10 per cent uranium across 1.5 metres (Geology, Exploration and Mining 1969). The south part of the deposit is located 1.5 kilometres to the south; the mineralized area measured 400 by 150 metres according to drilling. The Collier occurrence (082ENE030), located 2.0 kilometres to the south shows minor radioactivity.

Massive basalt and basaltic tuff breccia up to 45 metres thick, overlie the fluvial sediments. Extensive areas of Coryell and Okanagan Batholith intrusive rocks, considered to be the main sources of uranium mineralization, occur topographically above and to the north of the deposit.

Secondary uranium mineralization is largely concentrated in the basal conglomerate and occurs as films on pebbles and in the matrix of loosely consolidated conglomerates and carbonaceous sediments. Autunite is the only uranium mineral identified.

The FUKI outcrop was discovered during a vehicle-borne scintillometer survey in 1968. The property was staked for Nissho-Iwai Canada Ltd. and exploration was carried out by the Power Reactor and Nuclear Fuel Development Corporation, of Japan. Work on the property, during the decade prior to the uranium moratorium in 1980, consisted of geological mapping, radiometric surveys, trenching, property surveys and at least 2616 metres of diamond drilling in 49 holes. The FUKI deposits are estimated to contain 477,500 tonnes grading 0.033 per cent uranium and have an average thickness of 1.36 metres (Assessment Report 8105).

Bibliography
EMPR ASS RPT *2013, *2484, *3135, *8105
EMPR COMM FILE Uranium
EMPR EXPL 1978-29, 30; 1979-34
EMPR FIELDWORK 1975, p. 31; 1977, p. 12
EMPR GEM *1969-302, 303; 1970-409; 1971-396
EMPR GEOLOGY *1975-34-36; 1977-1981-12-16
EMPR MAP 22; *29
EMPR OF 1990-32
EMPR P *1979-6, pp. 29-30, 34, 47
EMPR PF (Saleken, L.W. (1970-01-06): Exploration in Tertiary Continental Sediments for Epigenetic Uranium in the Rock Creek Area, B.C.; Zastavnikovich, S. (1976-01-07): Preliminary Unedited Notes on Report on Uranium Exploration in the Rock Creek Area June - July, 1976; Addie, N. (1976-05-01): Fuki Outcrop at Deer Lake; Day, S.J. (1985): Basal-Type Gold-Uranium Deposits, Okanagan Region)
EMR MIN BULL MR 223 B.C. 17
GSC MAP 6-1957
GSC OF 551; 1969
GSC P 70-48, pp. 91-92; 79-1A, pp. 349-356; 80-1B, pp. 17-28; 81-23, pp. 37-47
CIM BULL Dec. 1978, pp. 64-65; Aug. 1980, Vol. 73, No. 820, pp. 89-108
CIM SPECIAL VOL. 33, 1986, (Uranium Deposits of Canada), pp. 309-320
CSPG BULL VOL. 25, No. 6 (Dec 1977) p. 1245
ECON GEOL VOL. 77, No. 5, 1982, pp. 1176-1209
W MINER April 1977, p. 78
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, p. 34
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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