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American Mineralogist

Journal of Earth and Planetary Materials

Ed. by Baker, Don / Xu, Hongwu / Swainson, Ian


IMPACT FACTOR 2017: 2.645

CiteScore 2018: 2.55

SCImago Journal Rank (SJR) 2018: 1.355
Source Normalized Impact per Paper (SNIP) 2018: 1.103

Online
ISSN
1945-3027
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Volume 86, Issue 10

Issues

Elasticity of six polycrystalline silicate garnets at pressure up to 3.0 GPa

Zichao Wang
  • Département des Génies Civil, Géologique et des Mines, École Polytechnique de Montréal, C.P. 6079, Succursale Centre-Ville, Montréal, Québec H3C 3A7, Canada
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/ Shaocheng Ji
  • Corresponding author
  • Département des Génies Civil, Géologique et des Mines, École Polytechnique de Montréal, C.P. 6079, Succursale Centre-Ville, Montréal, Québec H3C 3A7, Canada
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Published Online: 2015-03-26 | DOI: https://doi.org/10.2138/am-2001-1009

Abstract

The elasticities of six polycrystalline silicate garnets (almandine, grossular, pyrope, uvarovite, andradite, and Prp25Alm56Spe19) have been experimentally studied at pressures up to 3.0 GPa using a phase comparison method with an ultrasonic interferometer in a liquid cell piston-cylinder apparatus. Complete elasticity data sets (P- and S-wave velocities, bulk moduli Ks, shear moduli G, and their first pressure derivatives KS and G′) have been obtained for all six garnets, and are used together with an up-to-date compilation of garnet elasticity data to examine composition-elasticity systematics of garnets. Our results suggest that pyralspite and ugrandite have different relationships between bulk sound velocity (Vφ) and mean atomic weight (M̅0), between Poisson’s ratio (σ) and density (ρ), and between G/Ks and KS/ρ ratios. A large error may occur when the systematics are applied across different garnet groups.

About the article

Received: 2000-04-17

Accepted: 2001-06-07

Published Online: 2015-03-26

Published in Print: 2001-10-01


Citation Information: American Mineralogist, Volume 86, Issue 10, Pages 1209–1218, ISSN (Online) 1945-3027, ISSN (Print) 0003-004X, DOI: https://doi.org/10.2138/am-2001-1009.

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© 2015 by Walter de Gruyter Berlin/Boston.

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