EMP and Raman spectroscopic data of Fe-Mn oxides from Serra da Mina deposit, Iberian Pyrite Belt, SW Portugal

Electron microprobe and micro-Raman analysis of two samples collected in the Fe-Mn supergene enrichment zone of the Serra da Mina vein-hosted deposit, Iberian Pyrite Belt, SW Portugal. Data collected in the framework of a research project focusing on the paragenetic sequence of Mn oxides and the corresponding associated changes in physical-chemical conditions.