JV partners Alpha Minerals Inc. and Fission Energy Corp. report repeated radon success at Patterson Lake South in the Athabasca Basin. Drilling on new radon anomalies continues to return good intersections and discover new zones.

For details see 2013 press release for Fission Uranium Corp. and numerous more recent press releases.

I have been researching and promoting the use of radon and radium geochemistry in lake and stream water and sediments for many years. See my earlier note recommending lake-bottom radon for drill-target location.

In 1972 I delineated a radon anomaly in the south arm of Midwest Lake, above the orebody, which was discovered by drilling several years later. If the water in Midwest Lake had been a few feet higher the boulder train would have been submerged and not detected by the scintillometer, but the radon anomaly would have been there.

In 1974 my team discovered a similar anomaly in the lakes at the Kiggavik deposit, expressed by radon and uranium in water and radium and uranium in sediment. Again, if the surface exposure had been covered by a foot or two of overburden or lake water our airborne gamma-ray survey wouldn't have found it, but the geochemical survey would have.

(Brief note on possible confusion of radon and radium: The press releases above refer to radon in sediment. I sometimes refer to this same thing as radium because radium is the source of the radon measured by the instruments.)

In all three cases, Midwest, Kiggavik and now PLS, if the melting ice sheet had left a slightly different arrangement of lakes, swamps and overburden, then the gamma radiation of surface exposures and boulder trains would not have been detected, but the orebody could still have been found by radon in the lakes.

Robert H. Morse, Ph.D., P.Eng.
March 20, 2013
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