<?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>Chris Gammons</dc:contributor>
  <dc:contributor>Jay M. Thompson</dc:contributor>
  <dc:contributor>Holly J. Stein</dc:contributor>
  <dc:creator>Celine M.E. Beaucamp</dc:creator>
  <dc:date>2025</dc:date>
  <dc:description>&lt;p&gt;The Philipsburg mining district is a Mo-Cu porphyry system with associated Cordilleran polymetallic veins. Geochronology was employed to date the porphyry (~66 Ma, U/Pb in zircon) and molybdenite mineralization&amp;nbsp;from the veins (~76 Ma, Re-Os). Age results suggest that the two-mineralization events model proposed by Lund et al. (2018) for the Butte district can be applied to the&amp;nbsp;Philipsburg deposit. Furthermore, common fertility indicators from zircon trace elements were analyzed with variable success to characterize the existing Mo-Cu mineralization of the Philipsburg porphyry. This raises&amp;nbsp;concerns about the benefits of this method and/or the importance of sampling, which could impact exploration for similar porphyry deposits.&lt;/p&gt;</dc:description>
  <dc:format>application/pdf</dc:format>
  <dc:language>en</dc:language>
  <dc:publisher>Society for Geology Applied to Mineral Deposits (SGA)</dc:publisher>
  <dc:title>Ages and trace element fertility of porphyry-related mineralization in the Philipsburg polymetallic district, Montana, with a comparison to Butte</dc:title>
  <dc:type>text</dc:type>
</oai_dc:dc>