“…Since the analysed rutiles had relatively low U concentrations (3-81 µg.g -1 ; Table 4), Tanzania zircon, an in-house 601 ± 1 Ma, low-U (11 to 26 µg.g -1 ) reference material developed in LOPAG (UFOP), was used as the primary reference material (Santos et al, unpublished results; TIMS U-Pb data for Tanzania zircon can be found in supporting information). Non-matrix matched dating of a range of minerals using zircon as primary reference material is an approach that has been previously successfully used in a number of studies (e.g., Millonig et al, 2013); Avigad et al, 2017;Van Lichtervelde et al, 2017;Be'eri-Shlevin et al, 2018;Ghobadi et al, 2018;Müller et al, 2018;Walter et al, 2018). In these studies, GJ-1 zircon was used as primary reference material for dating perovskite, monazite, apatite, baddeleyite, pyrochlore, titanite, xenotime, hematite, columbite, rutile, and secondary reference materials of the mineral of interest are used to establish a matrix offset to correct the age of these minerals (e.g., Avigad et al, 2017;Müller et al, 2018).…”