Citation
Ls. Dubrovinsky et al., Pressure-induced transformations of cristobalite, CHEM P LETT, 333(3-4), 2001, pp. 264-270
Citations number
22
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
CHEMICAL PHYSICS LETTERS
ISSN journal
00092614
→ ACNP
Volume
333
Issue
3-4
Year of publication
2001
Pages
264 - 270
Database
ISI
SICI code
0009-2614(20010112)333:3-4<264:PTOC>2.0.ZU;2-J
Abstract
X-ray in situ studies in electrically and laser-heated diamond anvil cells
(DACs) at pressures over 80 cpa and temperatures above 2500 K were used to
determine stable silica phase at extreme conditions. We demonstrate that so
far unidentified phases obtained on the compression of cc-cristobalite, ne
w dense silica polymorph in the Martian Shergotty meteorite, and controvers
ial post-stishovite phase is alpha -PbO2-like silica. (C) 2001 Elsevier Sci
ence B.V. All rights reserved.