The datasets include six tables. These tables include the information on the sample description, compositions of whole rocks and minerals, U-Th-Pb isotope data of baddeleyite and zircon, and mass-transfer calculation results for polycrystalline mineral reaction zones (PMRZs) in dolomite marbles from the Mogok metamorphic belt, Myanmar. The whole-rock compositions were determined by XRF and ICP-MS. The major elements of minerals were analyzed by EPMA, whereas the trace elements of minerals were analyzed by LA-ICP-MS. The U-Th-Pb isotope data were measured by SIMS.

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