Samples from Summit County, Colo., were fractionated for analyses of organic content and uranium. The uranium is related to organic content but not to type of organic matter. In one area uranium values are around 100 ppm in bulk samples and as much as 200 ppm in certain separated fractions of the samples; this is much higher than the 1-10 ppm normal uranium values for peat.
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USGS Numbered Series
Anomalous occurrence of uranium in alpine peats, Summit County, Colorado, and results of a simple sample fractionation procedure