Magnin, BenjaminKuiper, Yvette2023-01-152023-01-152023https://hdl.handle.net/11124/16066https://doi.org/10.25676/11124/16066This dataset accompanies journal article ‘Significance of Ediacaran-Ordovician failed continental rifting and REE mineralization in the Wet Mountains, Colorado, USA’ published during 2023 in the journal ‘Tectonics’. The zip folder contains a Microsoft Excel spreadsheet with the name WM_Geochron.xlsx.U-Pb Laser Ablation-Inductively Coupled Plasma Mass Spectrometry (LA-ICP-MS) isotopic data were collected for igneous and hydrothermal monazite from a carbonatite dike and hydrothermally altered pegmatite dike, respectively, to determine the age of carbonatite emplacement and rare earth element (REE) mineralization in the Wet Mountains, Colorado. Fifty analyses from three monazite grains from each sample yielded reliable 206Pb/238U data. Sample locations were recording using a handheld Global Positioning System.engCopyright of the original work is retained by the authors.U-Pb geochronologymonaziteWet MountainscarbonatiteDataset