Mixing properties and stability of jadeite-acmite pyroxene in the presence of albite and quartz

Contributions to Mineralogy and Petrology
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Abstract

The stability of synthetic jadeite-acmite pyroxene coexisting with albite and quartz has been determined at 600, 700, and 900?? C. The end-member reaction: albite = jadeite + quartz has been determined to lie between 1.67 and 1.70 GPa at 600?? C, 1.88 and 1.90 GPa at 700?? C, and 2.44 and 2.48 GPa at 900?? C. Jd78Acm22 + quartz is stable above 1.58, 1.78, and 2.33 GPa at 600, 700, and 900?? C, respectively. Jd61Acm39 + quartz is stable above 1.47, 1.67, and 2.18 GPa at 600, 700, and 900?? C, respectively. Addition of as much as 40% of acmite component in jadeite extends pyroxene stability by less than 300 MPa at 900?? C. Unit-cell parameters measured for synthetic jadeite-acmite pyroxenes indicate linear volume-composition relations. The data are consistent with ideal mixing in jadeite-acmite solutions. ?? 1995 Springer-Verlag.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Mixing properties and stability of jadeite-acmite pyroxene in the presence of albite and quartz
Series title Contributions to Mineralogy and Petrology
DOI 10.1007/BF00286940
Volume 119
Issue 4
Year Published 1995
Language English
Publisher location Springer-Verlag
Larger Work Type Article
Larger Work Subtype Journal Article
Larger Work Title Contributions to Mineralogy and Petrology
First page 433
Last page 440
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