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  <titleInfo>
    <title>Magnetite taconite rock in Precambrian formations in Rio Arriba County, New Mexico</title>
  </titleInfo>
  <name type="personal">
    <namePart>Bertholf, William Earl</namePart>
    <namePart type="date">1915-</namePart>
    <role>
      <roleTerm authority="marcrelator" type="text">creator</roleTerm>
    </role>
  </name>
  <typeOfResource>text</typeOfResource>
  <genre authority="marc">bibliography</genre>
  <originInfo>
    <place>
      <placeTerm type="code" authority="marccountry">nmu</placeTerm>
    </place>
    <place>
      <placeTerm type="text">Socorro</placeTerm>
    </place>
    <publisher>State Bureau of Mines &amp; Mineral Resources, New Mexico Institute of Mining &amp; Technology</publisher>
    <dateIssued>1960</dateIssued>
    <issuance>monographic</issuance>
  </originInfo>
  <language>
    <languageTerm authority="iso639-2b" type="code">eng</languageTerm>
  </language>
  <physicalDescription>
    <form authority="marcform">print</form>
    <extent>iv, 24 p. illus., map, diagrs., tables. 28 cm.</extent>
  </physicalDescription>
  <note>Errata slip inserted.</note>
  <note>Bibliography: p. 24.</note>
  <subject authority="lcsh">
    <topic>Magnetite</topic>
    <geographic>New Mexico</geographic>
    <geographic>Rio Arriba County</geographic>
  </subject>
  <subject authority="lcsh">
    <topic>Rocks</topic>
    <topic>Analysis</topic>
  </subject>
  <classification authority="lcc">TN24.N6 A235 no. 54</classification>
  <relatedItem type="series">
    <titleInfo>
      <title>Circular (New Mexico. Bureau of Mines and Mineral Resources) ; 54</title>
    </titleInfo>
  </relatedItem>
  <identifier type="lccn">gs 60000249</identifier>
  <recordInfo>
    <recordContentSource authority="marcorg">U.S. Geol. Survey. Libr.</recordContentSource>
    <recordCreationDate encoding="marc">780920</recordCreationDate>
    <recordChangeDate encoding="iso8601">20260227111409.0</recordChangeDate>
    <recordIdentifier source="DLC">gs 60000249 </recordIdentifier>
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