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

Contributions to Mineralogy and Petrology

By:
,
DOI: 10.1007/BF00286940

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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
First page:
433
Last page:
440
Number of Pages:
8