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      <marc:subfield code="a">Paulen, Roger C., </marc:subfield>
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      <marc:subfield code="a">Lead and sulphur isotopes of sphalerite and galena grains recovered from till samples, northwest Alberta / </marc:subfield>
      <marc:subfield code="c">R.C. Paulen, A. Plouffe, S. Paradis, and I.R. Smith.</marc:subfield>
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      <marc:subfield code="a">Includes bibliographical references (pages 10-16).</marc:subfield>
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      <marc:subfield code="a">"This report presents the analytical data from Pb and S isotope analyses from sphalerite and galena grains recovered from bulk till samples collected from the north-central sector of the Zama Lake (NTS 84L) and south-central sector of the Bistcho Lake (NTS 84M) map sheets, northwest Alberta. The main objective of the isotope analyses is to evaluate if the Pine Point Mississippi Valley-type (MVT) deposit could be a potential source for the sphalerite and galena grains recovered in till"--Abstract, page 1.</marc:subfield>
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      <marc:subfield code="a">Isotope geology</marc:subfield>
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      <marc:subfield code="a">Géochimie isotopique</marc:subfield>
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      <marc:subfield code="a">Geological Survey of Canada, </marc:subfield>
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