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Single crystal elasticity of lawsonite

Stanislav V. Sinogeikin, Frank R. Schilling and Jay D. Bass
Single crystal elasticity of lawsonite
American Mineralogist (December 2000) 85 (11-12): 1834-1837


The single-crystal elastic moduli of lawsonite [CaAl (sub 2) (Si (sub 2) O (sub 7) )(OH)2 degrees H (sub 2) O] were measured by Brillouin spectroscopy at ambient conditions. The Voigt-Reuss-Hill averaged aggregate elastic moduli are K (sub s) = 125(2) GPa and mu = 52(2) GPa, for the adiabatic bulk modulus and shear modulus, respectively. Our acoustic results resolve discrepancies between the bulk moduli obtained in earlier compression studies. Lawsonite has distinctive acoustic properties, being characterized by extremely high shear elastic anisotropy (74%), a high V (sub p) to V (sub s) ratio (V (sub p) /V (sub s) = 1.94), and a large Poisson's ratio (sigma = 0.318).

ISSN: 0003-004X
EISSN: 1945-3027
Serial Title: American Mineralogist
Serial Volume: 85
Serial Issue: 11-12
Title: Single crystal elasticity of lawsonite
Affiliation: University of Illinois, Department of Geology, Urbana, IL, United States
Pages: 1834-1837
Published: 200012
Text Language: English
Publisher: Mineralogical Society of America, Washington, DC, United States
References: 25
Accession Number: 2001-006303
Categories: Geophysics of minerals and rocks
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 3 tables
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2018, American Geosciences Institute.
Update Code: 200103
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