Mineral chemical compositions within the uppermost lithospheric mantle exposed and sampled in the Wadi Tayin Massif from the Oman ophiolite.

The dataset includes in-situ major element chemical analyses carried out at the Electron Probe Micro-Analyzer (EPMA) at the Dipartimento di Scienze della Terra “Ardito Desio”, University of Milano, on olivine, orthopyroxene, clinopyroxene, and spinel of spinel harzburgite samples. Samples were collected in the uppermost lithospheric mantle portion exposed along the Wadi Zeeb and Wadi Nassif rivers in the Wadi Taiyn massif (south of the Oman ophiolite). The purpose of the dataset is to document the chemical composition and possible chemical changes of the main mineral phases componing the refractory mantle harzburgites sampled at various depths in the mantle and involved within the spinel stability field by a reactive porous melt flow event with different degrees of melt-rock interaction.本数据集包含于米兰大学“阿尔迪托·德西奥”地球科学系的电子探针显微分析仪（Electron Probe Micro-Analyzer，EPMA）上完成的原位主量元素化学分析数据，分析对象为采自瓦迪泰恩地块（阿曼蛇绿岩带以南）沿瓦迪齐卜河与瓦迪纳西夫河出露的最上部岩石圈地幔区段的尖晶石相方辉橄榄岩样品中的橄榄石、斜方辉石、单斜辉石及尖晶石。本数据集旨在记录该采样区域内，采自地幔不同深度尖晶石稳定域内、由不同程度熔体-岩石相互作用的反应性多孔熔体流事件所改造的难熔地幔方辉橄榄岩的主要矿物相化学成分及其潜在化学变化。