Fujian Rare Earth Study Finds 82.9% Localized Heavy Rare Earth Loss, Raises Environmental Concerns

Highlights

• Heavy rare earth concentrations fell 82.9% at 11 meters after nine months of magnesium sulfate leaching at a Fujian ionic clay mine
• The exchangeable rare earth fraction rose from 25.2% to 41.3%, increasing the risk of post-mining soil and groundwater contamination
• Extraction is not the same as recovery—operators must track rare earths removed, captured in product, and potentially escaping collection separately
• The study highlights a technology gap: better fluid control and residual recovery could improve both profitability and environmental performance