xenotimeY
XenotimeY is a hypothetical mineral species within the xenotime phosphate group. It represents a solid-solution variant in which the Y-site is variably substituted by rare-earth elements, described by an idealized formula near (Y1−xREEx)PO4. The name reflects a yttrium-rich end member used in theoretical and experimental studies to examine how dopants affect the xenotime lattice and trace-element behavior.
Crystal chemistry and structure: Xenotime minerals, including xenotimeY in this concept, adopt a tetragonal lattice. Substituting
Occurrence and status: XenotimeY has not been confirmed in natural samples and is not listed in major
Physical properties: As a xenotime analogue, xenotimeY would be expected to have a tetragonal habit, vitreous
Research context and relevance: Studying xenotimeY would illuminate cation substitution in phosphate lattices and inform discussions