Mineral Deposit Index DetailsMineral Property #: 2111
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1. Showing Information

2. Geology of the Showing

3. Exploration History

4. References

5. Reserves

6. Production

OneShowing Information
SMDI #:2111
Showing Name:Radiometric Anomaly No. 23
Location:LeBlanc Lake area
NTS Area:74N10
UTM13-Northing (NAD83/Zn13):6617638.12
UTM13-Easting (NAD83/Zn13):291845.05
Associated Commodities:
Type:Outcrop grab
Mineral Resource Assessment:Mineral Location
Mineral Deposit Type:Beaverlodge-Type Uranium +/- Polymetallic
Geological Domain:Zemlak
Revised On:2010/06/08

TwoGeology of the Showing
     The showing, or radioactive anomaly no. 23, is composed of several uraniferous occurrences.                              
     The lithology of the area is characterized by a red stained, potassium feldspar rich gneiss called the Donaldson Lake gneiss of the Middle Tazin Group which is commonly interlayered with amphibolite.  The amphibolite is composed of dark hornblende, brown biotite and chlorite.  The formation follows a general northeast tectonic trend.  A major northeasterly trending lineament, the Orbit Fault, separates the area from the western limb of the Fold Lake anticline which is composed of quartzites intermixed with pink granitized quartzites and amphibolitic layers.  The core of the anticline is composed of coarse-grained, red-stained Donaldson Lake gneiss which locally displays a pegmatite-like texture. In 2003, Ashton and Hunter remapped the east shore of Whyte Bay in the vicinity of the showing as being underlain by Murmac Bay Group unit Mx or a series of undifferentiated interlayered (on a scale of meters to tens of meters) Murmac Bay Group rocks that include psammites to psammopelites, amphibolites, migmatites and diatextites.
     Most of the anomalies in the area are located along a belt which extends along the eastern shore of LeBlanc Lake.  The radioactive occurrences vary in length from a few feet to tens of feet.  Some return very high scintillometer readings (exceeding 15,000 cps) but do not show any lateral or depth extension.  As a result, they are not considered to be economic.  Uraninite is probably the source of the spotty uranium mineralization.

ThreeExploration History
     The area of the showing was first covered by CBS 408 as early as 1968.  That year Consolidated Val-Tor Resources Ltd. flew a scintillometer survey over the claim block and did prospecting, traversing and surface exploration (AF 74N10-0352).  Nothing else was reported on the claim and the claim lapsed in February, 1971.
     Fosago Explorations Ltd. optioned the area as CBS 2671 on 20 March 1973 and in 1975 did an extensive exploration program consisting of scintillometer prospecting, geological mapping, radiometric surveying, trenching, sampling, rotary drilling and percussion drilling (AF 74N10-0472).  As a result of this surveying the showing was discovered.  Due to the lack of lateral or length extension, the showing was not considered to be economic and no further work pertaining to the showing was done.  The claim block lapsed 20 March 1976 and has remained open since.

Agarwal, R.G. (1962): Regional Correlation of Geological and Geophysical Data in the Lake Athabasca Area: DMR Rep. No. 75; 4p, maps. Ashton,K.E., Hunter, R. (2003): Geology of the LeBlanc-Wellington Lakes Area, Eastern Zemlak Domain, Rae Province: Sask. Geol. Surv. Misc. Rept. 2003-4.2 CD-ROM.



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