Rutile isotopic ratios

LA-ICP-MS using a multi-collector instrument for Pb-Pb dating via ° Pb/ °" Pb and ° Pb/ ° Pb isotope ratio measurements of natural rutile crystals has been utilized to study geological temperature-time histories. The significance of Devonian-Carboniferous igneous activity in Tasmania on the basis of U-Pb dating has been measured by sensitive high resolution ion microprobe (SHRIMP). ... 

Elcombe and Hulston 1975 Kawabe 1978). Kieffer (1982) took a less detailed approach in calculating oxygen isotope partition function ratios for 11 silicate minerals, calcite and rutile. As input for her calculations, Kieffer used the measured spectra for the forms of minerals, divided the vibrational modes for these minerals into four groups, and then developed a set of rules for estimating the frequency shift associated with each group on substitution. Importantly, she applied the same rules to each mineral considered in her study, which resulted in an internally consistent set of partition function ratios. Most of Kieffer s calculated fractionation factors are in excellent agreement with experimental data (Clayton and Kieffer 1991). 

Quantitative MAS NMR investigation by Sun et al of the isotope exchange on pure-anatase TiOz/A and mixed-phase TiOz/A-l-R with an anatase to rutile ratio of 1 1 has been performed. MAS NMR studies of the surface exchange was evidenced. ... 

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