Results of research of interaction are given in system:phosphate-containing mineral composition – Sr or Ce nitrate– Sr or Ce phosphate. Products of experiments areinvestigated by methods of fotokolometriya, X-ray spectral, xray,and nuclear-absorbing analyses. Conditions of course ofmetasomatic replacement of phosphate Na distributed inpolymineral composition of granite structure, on Sr(Ce)phosphates, - the room temperature and atmospheric pressure.In experiences with participation of dehydrated phosphate Nawas modeled mechanism infiltration metasomatos. Whenusing hydrate of phosphate Na was modeled diffusivemetasomatos.

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