Rare Earth Elements in F-Apatite

In the context of the productive collaboration with Alain Manceau and financed by his ERC DEEP-SEE, our comprehensive work on trends of the incorporation of rare earth elements across the entire series of lanthanides is now available in ACS Earth Space Chem. Our investigation shows that the smaller Ca2 site is generally preferred, not because of its size, nor because of the different charge-balance interactions, but mostly because of its larger flexibility.