Hydrogen, trace, and ultra-trace element distribution in natural olivines

We investigate the coupling between H, minor, trace, and ultra-trace element incorporations in 17 olivines from ten different locations covering various petrological origins: magmatic, hydrothermal, mantle-derived context. Concentrations major are determined by micro X-ray fluorescence. Minor, elements laser ablation inductively coupled plasma mass spectrometry. Hydrogen concentrations quantified using unpolarized polarized Fourier transform infrared spectroscopy (FTIR). Forsterite contents (83.2–94.1%) reflect petrogenetic diversity. range 0 to 54 ppm H2O wt. Minor (Ni + Mn) 3072 4333 ppm, impurities dominated Ni, Mn, Ca or B. Total trace 8.2 1473 ppm. rare Earth extended very low (< 0.5 ppm). Magmatic hydrothermal show most least amount of impurities, respectively, have these two extremes. Combined with concentrations, hydrogen FTIR OH bands point defect diversity imposed geological settings. inversely correlated divalent indicating their competition for vacancies. However, a broad positive correlation is also found at 3575 3525 cm?1 Ti, confirming existence Ti-clinohumite-like mantle olivines. Nonetheless, Ti does not exclusively control incorporation olivine due co-existence other mechanisms, its effect appears diluted. Our results confirm that behaves as peculiar incompatible element, furthermore an opportunistic impurity olivine.