A NEW METHOD OF SYNTHESIS OF BOLTWOODITE AND OF FORMATION OF SODIUM BOLTWOODITE, URANOPHANE, SKLODOWSKITE AND KASOLITE FROM BOLTWOODITE

Authors
VOCHTEN R BLATON N PEETERS O VANSPRINGEL K VANHAVERBEKE L
Citation
R. Vochten et al., A NEW METHOD OF SYNTHESIS OF BOLTWOODITE AND OF FORMATION OF SODIUM BOLTWOODITE, URANOPHANE, SKLODOWSKITE AND KASOLITE FROM BOLTWOODITE, Canadian Mineralogist, 35, 1997, pp. 735-741
Citations number
29
Categorie Soggetti
Mineralogy
Journal title
Canadian Mineralogist → ACNP
ISSN journal
00084476
Volume
35
Year of publication
1997
Part
3
Pages
735 - 741
Database
ISI
SICI code
0008-4476(1997)35:<735:ANMOSO>2.0.ZU;2-S
Abstract
Boltwoodite has been synthesized at 185 degrees C (1.3 MPa) from quart z, KCl and uranyl nitrate by a new method avoiding local supersaturati on of silicate species in solution. Sodium boltwoodite, uranophane, sk lodowskite and kasolite were synthesized from boltwoodite. Unit-cell p arameters and space groups were determined from the X-ray powder-diffr action data. Infrared spectra have intense absorption bands at 3458 an d 3377 cm(-1), which correspond to OH-stretching vibrations. Bands at 1384 cm(-1) indicate the presence of SiO3OH groups in the structures. Luminescence spectra and solubility data are reported.