This dataset provides mineralogical and geochemical data from the Oumjrane gabbronorite intrusion, located in the eastern Anti-Atlas (Morocco), within the Northwest African Variscan belt. Samples were collected from a fully cored borehole intersecting a mafic intrusion emplaced within Paleozoic sedimentary successions of the Tafilalet–Maider basins, during field campaigns conducted between 2021 and 2023. Mineral chemistry data were obtained using JEOL Electron Probe JXA-8230 and a LA-ICPMS system, 213-nm Nd-YAG Merchantek laser connected to a Thermo Finnigan Element 2 sector-field mass spectrometer. The dataset includes major and trace element concentrations, as well as derived parameters (e.g., Mg#), and serves as input for thermobarometric, hygrometric, and oxybarometric calculations. All data are provided in tabulated format with complete metadata, ensuring reproducibility.The clinopyroxene dataset includes major element compositions obtained by EPMA. Major elements (e.g., Ca, Mg, Fe, Al) are reported with associated analytical precision. These data enable thermobarometric calculations and provide constraints on crystallization conditions within the intrusion. The dataset is structured to facilitate reproducible use in petrological modeling.

Funded by: European Union's Learning Mobility of Individuals program (AC 171) UNAM research grant