<?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>Irving Friedman</dc:contributor>
  <dc:contributor>J. Thomas Nash</dc:contributor>
  <dc:creator>W. E. Hall</dc:creator>
  <dc:date>1974</dc:date>
  <dc:description>&lt;p&gt;&lt;span&gt;The Climax mine contains three molybdenite ore bodies and widespread late quartz-pyrite-sericite barren mineralization, each related to separate intrusive phases of the Climax stock. Alteration zones spatially related to each molybdenite ore body include a silica zone below, a potassium-silicate zone that approximately coincides with ore, and overlying quartz-sericite-pyrite-topaz, argillic, and propylite zones&lt;/span&gt;&lt;span&gt;.&lt;/span&gt;&lt;/p&gt;&lt;p&gt;&lt;span&gt;Delta&amp;nbsp;&lt;/span&gt;&lt;sup&gt;18&lt;/sup&gt;&lt;span&gt;&amp;nbsp;O values of quartz range from +8.4 to 10.9 per mil; delta&amp;nbsp;&lt;/span&gt;&lt;sup&gt;18&lt;/sup&gt;&lt;span&gt;&amp;nbsp;O values of muscovite and sericite range from --0.8 to +7.5 per mil. Eight of ten sericite values are between +5.8 and +7.5. All of the quartz and most of the sericite is in isotopic equilibrium with a calculated water at 350 degrees C with delta&amp;nbsp;&lt;/span&gt;&lt;sup&gt;18&lt;/sup&gt;&lt;span&gt;&amp;nbsp;O values of +3.0 to 5.5 per mil.&lt;/span&gt;&lt;/p&gt;&lt;p&gt;&lt;span&gt;Delta&amp;nbsp;&lt;/span&gt;&lt;sup&gt;18&lt;/sup&gt;&lt;span&gt;&amp;nbsp;O values of K-feldspars range from --4.5 to +7.5 per mil. This wide range indicates partial reequilibration of the feldspar with later, isotopically light, waters.&lt;/span&gt;&lt;/p&gt;&lt;p&gt;&lt;span&gt;Two muscovites have delta D values of --146 and --91 per mil; sericite ranges from --168 to --116 per mil. The calculated delta D values of water at 275 degrees C in equilibrium with sericite are --144 to --92. This range is the same as that of fluid inclusions in ore samples.Kaolinite in the argillic zone has delta&amp;nbsp;&lt;/span&gt;&lt;sup&gt;18&lt;/sup&gt;&lt;span&gt;&amp;nbsp;O values of --0.9 to --2.2 and delta D values of --162 per mil. Calculated water at 250 degrees C in equilibrium with kaolinite delta&amp;nbsp;&lt;/span&gt;&lt;sup&gt;18&lt;/sup&gt;&lt;span&gt;&amp;nbsp;O values of --4.7 to -6 and delta D of about -130 per mil.&lt;/span&gt;&lt;/p&gt;&lt;p&gt;&lt;span&gt;The isotopic and fluid inclusion data best fit a model whereby the Climax ore bodies were formed from a hydrothermal fluid that originated by mixing light and heavy waters. The light water is isotopically similar to present-day meteoric water; the heavy water has the isotopic composition postulated for magmatic water, although it could be meteoric water that was heavier than present-day meteoric water.&lt;/span&gt;&lt;/p&gt;</dc:description>
  <dc:format>application/pdf</dc:format>
  <dc:identifier>10.2113/gsecongeo.69.6.884</dc:identifier>
  <dc:language>en</dc:language>
  <dc:publisher>GeoScienceWorld</dc:publisher>
  <dc:title>Fluid inclusion and light stable isotope study of the climax molybdenum deposits, Colorado</dc:title>
  <dc:type>article</dc:type>
</oai_dc:dc>