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<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>D.R. Cook</dc:contributor>
  <dc:contributor>T. S. Lovering</dc:contributor>
  <dc:contributor>H. T. Morris</dc:contributor>
  <dc:creator>J.B. Bush</dc:creator>
  <dc:date>1960</dc:date>
  <dc:description>&lt;p&gt;&lt;span&gt;In 1955 exploration for base and precious metals was undertaken by Bear Creek Mining Company immediately north of the Main&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;Tintic&lt;/span&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;district&lt;/span&gt;&lt;span&gt;,&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;Utah&lt;/span&gt;&lt;span&gt;. During the course of this work Bear Creek became interested in the&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;East&lt;/span&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;Tintic&lt;/span&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;district&lt;/span&gt;&lt;span&gt;, primarily as&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;a&lt;/span&gt;&lt;span&gt;&amp;nbsp;result of the activities of the U.S. Geological Survey in that&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;area&lt;/span&gt;&lt;span&gt;. Data published on the&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;East&lt;/span&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;Tintic&lt;/span&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;district&lt;/span&gt;&lt;span&gt;&amp;nbsp;by the Survey and others were studied and map data made available from various mining companies were compiled. Preliminary economic studies were made to determine the present day value of the type of ore body discovered previously in the&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;district&lt;/span&gt;&lt;span&gt;. Encouraging results from these investigations led to the selection of specific targets for exploration. Recommendations for&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;a&lt;/span&gt;&lt;span&gt;&amp;nbsp;project program were made and approved. Negotiations were successfully concluded in mid-1956 for&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;a&lt;/span&gt;&lt;span&gt;&amp;nbsp;unit lease agreement on lands in the&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;East&lt;/span&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;Tintic&lt;/span&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;district&lt;/span&gt;&lt;span&gt;&amp;nbsp;owned by the&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;Tintic&lt;/span&gt;&lt;span&gt;&amp;nbsp;Standard and&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;Chief&lt;/span&gt;&lt;span&gt;&amp;nbsp;Consolidated mining companies and their subsidiaries. Of the targets selected for exploration, the&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;Chief&lt;/span&gt;&lt;span&gt;&amp;nbsp;Oxide&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;area&lt;/span&gt;&lt;span&gt;&amp;nbsp;seemed to be one of the most prominent. Our preliminary work in the&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;Chief&lt;/span&gt;&lt;span&gt;&amp;nbsp;Oxide&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;area&lt;/span&gt;&lt;span&gt;&amp;nbsp;corroborated the findings of the U.S. Geological Survey described in Part I of this paper. After careful consideration it was decided to gamble the cost of an exploration shaft in this&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;area&lt;/span&gt;&lt;span&gt;&amp;nbsp;for the purpose of providing an underground drilling platform. We also hoped by means of underground workings to establish the existence and nature of the postulated fault.&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;A&lt;/span&gt;&lt;span&gt;&amp;nbsp;limited amount of surface drilling was done prior to shaft sinking in order to locate&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;a&lt;/span&gt;&lt;span&gt;&amp;nbsp;shaft site and also to obtain additional information of subvolcanic structure and alteration. Underground exploration in the&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;Chief&lt;/span&gt;&lt;span&gt;&amp;nbsp;Oxide&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;area&lt;/span&gt;&lt;span&gt;&amp;nbsp;was started in January, 1957. The Burgin shaft was sunk to&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;a&lt;/span&gt;&lt;span&gt;&amp;nbsp;depth of 1,100 feet and by August, 1959, lateral development on the 1050 level totaled 4,721 feet and underground diamond drilling totaled 15,480 feet. Results of the work done to date are as follows: (&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;a&lt;/span&gt;&lt;span&gt;) Identification of the sedimentary rock section and an interpretation of the structure in the Burgin mine&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;area&lt;/span&gt;&lt;span&gt;. (b)&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;Discovery&lt;/span&gt;&lt;span&gt;&amp;nbsp;by penetration of the previously postulated&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;East&lt;/span&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;Tintic&lt;/span&gt;&lt;span&gt;&amp;nbsp;thrust fault. (c)&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;Discovery&lt;/span&gt;&lt;span&gt;&amp;nbsp;of large zones of manganese oxides and carbonates, which were found to be closely related to silver-lead-zinc mineralization. (d)&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;Discovery&lt;/span&gt;&lt;span&gt;&amp;nbsp;of ore-grade lead-zinc mineralization within the footwall rocks of the&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;East&lt;/span&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;Tintic&lt;/span&gt;&lt;span&gt;&amp;nbsp;thrust. (e)&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;Discovery&lt;/span&gt;&lt;span&gt;&amp;nbsp;of high-grade silver-lead ore within the thrust zone. Insofar as ore localization is concerned the most important structural feature in the Burgin mine&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;area&lt;/span&gt;&lt;span&gt;&amp;nbsp;is the&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;East&lt;/span&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;Tintic&lt;/span&gt;&lt;span&gt;&amp;nbsp;thrust fault-&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;a&lt;/span&gt;&lt;span&gt;&amp;nbsp;fact that opens up new ore potential over&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;a&lt;/span&gt;&lt;span&gt;&amp;nbsp;large part of the&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;East&lt;/span&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;Tintic&lt;/span&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;district&lt;/span&gt;&lt;span&gt;&amp;nbsp;not previously explored. Although the&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;discoveries&lt;/span&gt;&lt;span&gt;&amp;nbsp;to date must be attributed essentially to the application of geology to exploration, the tools of geochemical prospecting and geophysics were also used, and the geochemical work, in particular, was found to be&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;a&lt;/span&gt;&lt;span&gt;&amp;nbsp;definite aid in the selection of areas for further exploration.&lt;/span&gt;&lt;/p&gt;</dc:description>
  <dc:format>application/pdf</dc:format>
  <dc:identifier>10.2113/gsecongeo.55.7.1507</dc:identifier>
  <dc:language>en</dc:language>
  <dc:publisher>Society of Economic Geologists</dc:publisher>
  <dc:title>The chief oxide-burgin area discoveries, East Tintic district, Utah; A case history</dc:title>
  <dc:type>article</dc:type>
</oai_dc:dc>