A reconnaissance of trace elements in anorthoclase megacrysts
ABSTRACT. Major, minor, and trace elements were measured with electron and ion microprobes for eighteen anorthoclase megacrysts from five locations. Compari-sons with concentration ranges tabulated by Smith (1974) show excellent agreement except for consistently ower values of Mg and B. The discrepa...
Main Authors: | , , , |
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Other Authors: | |
Format: | Text |
Language: | English |
Published: |
1982
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Subjects: | |
Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.628.5847 http://www.minersoc.org/pages/Archive-MM/Volume_46/46-338-7.pdf |
Summary: | ABSTRACT. Major, minor, and trace elements were measured with electron and ion microprobes for eighteen anorthoclase megacrysts from five locations. Compari-sons with concentration ranges tabulated by Smith (1974) show excellent agreement except for consistently ower values of Mg and B. The discrepancy for Mg probably reflects Mg-rich impurities contaminating samples analysed by bulk methods. The cause of the discrepancy for B is unknown and deserves further study. Samples from Mt. Erebus, Antarctica, contain glass inclusions from which the following crystal/liquid partition coeffi- |
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