Rare earths in Philippine phosphogypsum: Use them or lose them
Rare earth concentrations of 6,000 mg kg −1 in the accumulated PG could justify economic recovery of these valuable elements while rare earth concentrations of 108 mg kg −1 would clearly not (Gaustad et al., 2021). The (literally) multi-million-dollar-question is what minimum-, maximum- and average rare earth concentrations are present in ...
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