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Dissolved helium in lakes; uranium prospecting in the Precambrian terrain of central Labrador

W. B. Clarke, Z. Top, A. P. Beavan and S. S. Gandhi
Dissolved helium in lakes; uranium prospecting in the Precambrian terrain of central Labrador
Economic Geology and the Bulletin of the Society of Economic Geologists (April 1977) 72 (2): 233-242

Abstract

Measurements of dissolved helium, (super 3) He/ (super 4) He, and neon have been made in 60 water samples collected from 56 lakes and ponds in the Kaipokok region in Labrador. Tritium was measured in 8 water samples. The aim of the survey was to search for excess (super 4) He from decay of uranium and its daughter products. Excess (super 4) He varied from approximately 0% to 65% relative to the equilibrium solubility concentration at the temperature of the sample. delta ( (super 3) He), the helium isotope ratio anomaly relative to atmospheric helium, varied from +11% to -25%. Although the effect of tritium decay in the water prior to sampling must be considered, there is a good correlation between the lakes which have delta ( (super 3) He) -2% and lakes with excess radiogenic (super 4) He > or =4%. The helium results when plotted on a map of the area show a remarkable fit with the locations of known uranium mineralization.


ISSN: 0361-0128
EISSN: 1554-0774
Coden: ECGLAL
Serial Title: Economic Geology and the Bulletin of the Society of Economic Geologists
Serial Volume: 72
Serial Issue: 2
Title: Dissolved helium in lakes; uranium prospecting in the Precambrian terrain of central Labrador
Affiliation: Br. Newfoundland Explor. Ltd., Montreal, Canada
Pages: 233-242
Published: 197704
Text Language: English
Publisher: Economic Geology Publishing Company, Lancaster, PA, United States
References: 16
Accession Number: 1977-031633
Categories: Economic geology of ore deposits
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. tables, geol. sketch map
N54°30'00" - N55°15'00", W60°15'00" - W58°45'00"
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Abstract, Copyright, Society of Economic Geologists
Update Code: 1977
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