FIG. 10. Concordia plot of SHRIMP data for monazite from the matrix of mineralized magnetite breccias (sample UWA-B34) of the Igarapé Bahia Fe oxide Cu-Au-(U-REE) deposit. The weighted mean 207Pb/206Pb age of the main concordant cluster (unshaded), shown in the inset, is 2575 ± 12 Ma (MSWD = 1.19).