>"Rietveld structure refinement of precipitated carbonate apatite using neutron >diffraction data". >Wilson RM, Elliott JC, Dowker SE, Smith RI. (2004) Biomaterials. 25(11), >2205-13.
BTW, this paper is also in ICSD as is another neutron measurement that shows that silcate, like carbonate, substitues for phosphate; in this work the hydrogen atoms in the water are also located: "The effect of the silicon incorporation on the hydroxylapatite structure. A neutron diffraction study". Arcos, D.;Rodriguez-Carvajal, J.;Vallet-Regi, M. (2004) Solid State Sciences 6, 987-994 But you had better have some very good neutron data if you also have fluorine substituting for water as well as carbonate for phosphate :-) _____________________________________________________________ Dr Alan Hewat, ILL Grenoble, FRANCE<[EMAIL PROTECTED]>fax+33.476.20.76.48 +33.476.20.72.13 (.26 Mme Guillermet) http://www.ill.fr/dif/people/hewat/ _____________________________________________________________
