<?xml version='1.0' encoding='utf-8'?>
<oai_dc:dc xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
  <dc:contributor>S. S. Goldich</dc:contributor>
  <dc:contributor>H.H. Thomas</dc:contributor>
  <dc:creator>R. A. Gulbrandsen</dc:creator>
  <dc:date>1963</dc:date>
  <dc:description>Glauconite from the upper part of the Missoula Group of the Belt Series, Flathead County, Montana, has been dated at 1070 million years by potassium-argon and rubidium-strontium analyses. This is the first glauconite of Precambrian age reported in North America.</dc:description>
  <dc:format>application/pdf</dc:format>
  <dc:identifier>10.1126/science.140.3565.390</dc:identifier>
  <dc:language>en</dc:language>
  <dc:publisher>American Association for the Advancement of Science</dc:publisher>
  <dc:title>Glauconite from the Precambrian belt series, Montana</dc:title>
  <dc:type>article</dc:type>
</oai_dc:dc>