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Economic Geology; January 2005; v. 100; no. 1; p. 7-28; DOI: 10.2113/100.1.0007
© Society of Economic Geologists

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FIG. 8. Concordia plot of SHRIMP data from zircons from the host metavolcanic rocks of the Igarapé Bahia Fe oxide Cu-Au-(U-REE) deposit. The weighted mean ²⁰⁷Pb/²⁰⁶Pb age from the concordant analyses (shown as unshaded) is 2748 ± 34 Ma (MSWD = 2.7). Samples UWA-B18C and UWA-B18D.

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