ArticleCommunications earth & environment2025
Cerium occurs as cerium-phosphate clusters around bioapatite nanocrystals in deep-sea sediments.
Article in Communications earth & environment, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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3 citing papers in PubMed.
- Atomic-scale structure of gadolinium in nanocrystalline fluorapatite from marine sediments.Environmental science. Nano · 2026Article
- Oxidative uptake of Ce by oceanic ferromanganese crusts and implications for paleoredox estimates using Ce isotopes.Communications earth & environment · 2026Article
- Structural Form of Yttrium in Nanocrystalline Fluorapatite from Marine Sediments at 0.11 Å Resolution.Chemistry of materials : a publication of the American Chemical Society · 2025Article
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Authors and funding
12 authors.
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Abstract
Deep-sea mud is rich in rare-earth elements, primarily found in fluorapatite, a mineral deposit that forms over hundreds of thousands to millions of years through the accumulation of fish remains. After fish die, biogenic apatite captures rare earth elements from seawater on the seafloor and from pore waters during the diagenesis process. The conventional model for rare earth element enrichment suggests that they are incorporated into the bioapatite crystal structure through solid-state diffusion. However, our data reveal that cerium atoms are instead precipitated within an amorphous layer surrounding bioapatite nanocrystals, as shown by high-energy-resolution X-ray absorption spectroscopy and transmission electron microscopy. Computational simulations further support this finding, predicting that cerium atoms cluster on the surface of fluorapatite. These results suggest that the fluorapatite-water interface plays a crucial role in the enrichment of cerium, as well as other rare earth elements, in marine sediments.
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