DOI: 10.1126/science.259.5092.206. Comparative Compressibilities of Silicate Spinels: Anomalous Behavior of (Mg,Fe) <sub>2</sub> SiO <sub>4</sub>

Comparative Compressibilities of Silicate Spinels: Anomalous Behavior of (Mg,Fe) 2 SiO 4

10.1126/science.259.5092.206

Crossref journal-article

American Association for the Advancement of Science (AAAS)

Science (221)

Abstract

Compressibilities of five silicate spinels, including γ-Mg 2 SiO 4 , γ-Fe 2 SiO 4 , Ni 2 SiO 4 , and two ferromagnesian compositions, were determined on crystals positioned in the same high-pressure mount. Subjection of all crystals simultaneously to the same pressure revealed differences in compressibility that resulted from compositional differences. Ferromagnesian silicate spinels showed an anomalous 13 percent increase in bulk modulus with increasing iron content, from Mg 2 SiO 4 (184 gigapascals) to Fe 2 SiO 4 (207 gigapascals). This result suggests that ferrous iron and magnesium, which behave similarly under crustal conditions, are chemically more distinct at high pressures characteristic of the transition zone and lower mantle.

Bibliography

Hazen, R. M. (1993). Comparative Compressibilities of Silicate Spinels: Anomalous Behavior of (Mg,Fe) 2 SiO 4. Science, 259(5092), 206â209.

Authors 1

Robert M. Hazen (first)

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Dates

Type	When
Created	18 years, 10 months ago (Oct. 5, 2006, 7:05 p.m.)
Deposited	1 year, 7 months ago (Jan. 12, 2024, 5:07 p.m.)
Indexed	1 year ago (Aug. 20, 2024, 3:10 a.m.)
Issued	32 years, 7 months ago (Jan. 8, 1993)
Published	32 years, 7 months ago (Jan. 8, 1993)
Published Print	32 years, 7 months ago (Jan. 8, 1993)

Funders 0

None

BibTeX

@article{Hazen_1993, title={Comparative Compressibilities of Silicate Spinels: Anomalous Behavior of (Mg,Fe) 2 SiO 4}, volume={259}, ISSN={1095-9203}, url={http://dx.doi.org/10.1126/science.259.5092.206}, DOI={10.1126/science.259.5092.206}, number={5092}, journal={Science}, publisher={American Association for the Advancement of Science (AAAS)}, author={Hazen, Robert M.}, year={1993}, month=jan, pages={206–209} }

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