We present new geochemical, Sm–Nd and U–Pb data on the felsic volcanic rocks containing the world-class volcanic-hosted massive sulphide deposits in the Riotinto–Nerva unit, Iberian Pyrite Belt, Spain
Analytical results obtained for each irradiated and dated cryptomelane grains analysed using laser energy (in power %) of the spectrometer Argus VI.The concentrations (in molar volume, V) of 36</
