Quartz-plagioclase symplectites (calcic myrmekite): the first finding in gabbro in the Urals
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| RMS-DPI code: |
2010-1-20-0 |
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| Scientific session: |
M1. Current state and prominent problems in mineral science and new trends in investigation of minerals, rocks and ores. |
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| Author listing: |
Efimov A.A., Flyorova K.V., Maegov V.I. |
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| Principal author: |
Efimov Alexander Alexandrovich |
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| Language: |
Russian |
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Abstract - Summary
(short description): | |
Symplectites quartz + the basic ("calcic myrmekite") for the first time are found out in gabbro-norite of the Kytlym massif (the Uralian Platinum Belt). They are situated in plagioclase grains in the form of units with sharp borders to 0.5 mm in a diameter. The host plagioklase composition fluctuates from An61 to An64, myrmekite plagioklase – from An74 to An81. At borders of symplectites the plagioclase composition changes jump. The quartz maintenance in symplectites are approximately 7-10 %. Calcic myrmekite can be interpreted as an interaction product between plagioclase crystals in gabbro and the high-temperature water fluid which was introducing Ca and Al and taking out Si, Na and K.
Calcic myrmekite, gabbro, Urals |
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| Date of presentation: |
12/10/2010 |
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| Time of presentation: |
17:00 |
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| Presentation Place: |
Mining University, Hall 1164 |
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| RMS-DPI code: |
2010-1-20-0 |
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Proceeedings volume
in the RMS catalogue: | Modern mineralogy: from theory to practice |
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| Pages: |
51-53 |
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File of proceedings
(PDF): |
361 K
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| Status: |
printed |
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| Accepted: |
14/07/2010 |
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| Published on-line: |
21/11/2010 |
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| Permanent address of publication: |
http://www.minsoc.ru/2010-1-20-0/ |
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| Contact author(s): |
Efimov, Alexander Alexandrovich |
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