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Thermal expansivities and compressibilities of hydrous phases in the system MgO-SiO2-H2O: Talc, phase A and 10-angstrom phase

Abstract:

We have measured the thermal expansivity of talc, Mg3Si4O10(OH)2, and phase A, Mg7Si2O8(OH)6, and the compressibility of talc, phase A and 10-Å phase, Mg3Si4O10(OH)2 · xH2O, using powder X-ray diffraction. The thermal expansivity of talc and phase A were measured at temperatures up to 810°C and 600° C, respectively. Volumes of both phases increase linearly with temperature, and can be described as follows: Talc: V/V0 = 1 + 2.15 (± 0.05) × 10-5 (T - 298), V0 = 136.52 (± 0.03) cm3 mol-1; Phase ...

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Publication status:
Published

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Publisher copy:
10.1007/s004100050129

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Institution:
University of Oxford
Division:
MPLS
Department:
Earth Sciences
Role:
Author
Journal:
CONTRIBUTIONS TO MINERALOGY AND PETROLOGY More from this journal
Volume:
122
Issue:
3
Pages:
301-307
Publication date:
1995-12-01
DOI:
EISSN:
1432-0967
ISSN:
0010-7999
Language:
English
Pubs id:
pubs:163826
UUID:
uuid:0565c27e-4cb2-4189-a8bf-a1f3ed347d05
Local pid:
pubs:163826
Source identifiers:
163826
Deposit date:
2012-12-19

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