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

我们调查了来自十个不同地点的17个橄榄石中H，微量，微量和超微量元素掺入之间的耦合，涵盖各种岩石学起源：岩浆，热液和地幔衍生背景。主要元素的浓度通过微X射线荧光测定。微量，痕量和超痕量元素是通过激光烧蚀电感耦合等离子体质谱法确定的。使用非偏振和偏振傅立叶变换红外光谱（FTIR）量化氢浓度。镁橄榄石含量（83.2-94.1％）反映了成岩的多样性。氢浓度范围为0至54 ppm H ₂O重量 微量元素浓度（Ni + Mn）为3072至4333 ppm，杂质主要为Ni，Mn，Ca或B。痕量元素总浓度为8.2至1473 ppm。稀土元素和超痕量元素的总浓度非常低（<0.5 ppm）。岩浆和热液橄榄石分别显示最多和最少的杂质，而地幔衍生的橄榄石的浓度介于这两个极端之间。结合微量，微量和超微量元素浓度，氢浓度和FTIR OH谱带反映了不同地质环境带来的点缺陷多样性。氢浓度与二价杂质成反比，表明它们竞争空位。但是，在3575和3525 cm处的OH谱带之间也发现了广泛的正相关性^-1和Ti，证实了地幔橄榄石中存在类似Ti-Clinohumite的点缺陷。但是，由于与其他机理共存，Ti不能独占地控制氢在橄榄石中的掺入，并且其作用似乎很弱。我们的结果证实，氢表现为独特的不相容元素，并且还表现为橄榄石中的机会性杂质。