Sm–Nd evidence for the age and origin of a Mississippi Valley Type ore deposit

MISSISSIPPI Valley Type (MVT) ore deposits represent the relatively common product of large-scale fluid transport in the continental lithosphere, yet the models for their genesis have been more controversial and unconstrained than those of any other class of giant ore deposit1,2. Here we show that Sm–Nd isotope data can be used to determine the age and origin of an MVT deposit. Sm–Nd data for fluorites from the North Pennine orefield are …