Ca2+, PO43- reversible arrow Ln(3+), SiO44- coupled substitution in the apatitic structure: stability of the mono-silicated fluor-britholite

Authors
Carpena, J Boyer, L Fialin, M Kienast, JR Lacout, JL
Citation
J. Carpena et al., Ca2+, PO43- reversible arrow Ln(3+), SiO44- coupled substitution in the apatitic structure: stability of the mono-silicated fluor-britholite, CR AC S IIA, 333(7), 2001, pp. 373-379
Citations number
20
Categorie Soggetti
Earth Sciences
Journal title
COMPTES RENDUS DE L ACADEMIE DES SCIENCES SERIE II FASCICULE A-SCIENCES DELA TERRE ET DES PLANETES
ISSN journal
12518050 → ACNP
Volume
333
Issue
7
Year of publication
2001
Pages
373 - 379
Database
ISI
SICI code
1251-8050(20011015)333:7<373:CPRALS>2.0.ZU;2-D
Abstract
Synthetic crystals of mono-silicated fluor-britholite doped with rare earth elements have been prepared. The stoichiometry of the compound has been de termined by means of microprobe analyses. Single crystal Laue diffraction a nd luminescence measurements reveal the covalent character of the rare-eart h channel anion bond, thus explaining the stability of such compounds in th e natural environment. (C) 2001 Academie des sciences / Editions scientifiq ues et medicales Elsevier SAS.