1934•The Journal of GeologyRequires access

The Isotopic Composition of the Leads at Great Bear Lake

Charles Snowden Piggot

Abstract

The isotopic composition of five samples of lead from the radium mines of Great Bear Lake indicates that the lead within the pitchblende veins is all of radioactive origin, even including that which now exists as galena, though a galena occurring close to a pitchblende vein is composed of ordinary lead contaminated with radioderived lead. The data raise unusual problems.

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Key concepts: Uraninite, Galena, Geology, Lead (geology), Geochemistry, Vein, Uranium, Paleontology