HYDROTHERMAL SYNTHESIS AND MORPHOLOGY OF THOMSONITE AND EDINGTONITE

Authors
GHOBARKAR H SCHAF O
Citation
H. Ghobarkar et O. Schaf, HYDROTHERMAL SYNTHESIS AND MORPHOLOGY OF THOMSONITE AND EDINGTONITE, Crystal research and technology, 32(5), 1997, pp. 653-657
Citations number
13
Categorie Soggetti
Crystallography
Journal title
Crystal research and technology → ACNP
ISSN journal
02321300
Volume
32
Issue
5
Year of publication
1997
Pages
653 - 657
Database
ISI
SICI code
0232-1300(1997)32:5<653:HSAMOT>2.0.ZU;2-S
Abstract
The hydrothermal treatment of different glasses of the composition 2 N a2O-8 CaO-10 Al2O3-20 SiO2 and 2 BaO-2 Al2O3-6 SiO2 at one kilobar pre ssure in a temperature-range between 80 degrees C and 230 degrees C le ad to the formation of the zeolite-minerals thomsonite (orthorhombic s ymmetry space-group Pbmn, a = 13.05 Angstrom, b = 13.09 Angstrom and c =13.22 Angstrom), and edingtonite (orthorhombic symmetry, space-group: P2(1)2(1)2, a = 9.55 Angstrom, b = 9.67 Angstrom and c = 6.52 Angstro m). Under the chosen hydrothermal conditions both mineral phases are f ormed in the whole temperature interval.