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Aragonite-calcite-dolomite relationships in UHPM polycrystalline carbonate inclusions from the Kokchetav Massif, northern Kazakhstan

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Aragonite-calcite-dolomite relationships in UHPM polycrystalline carbonate inclusions from the Kokchetav Massif, northern Kazakhstan (EN)
Vandenabeele, P (EN)
Perraki, M (EN)
Zhukov, VP (EN)
De Gussem, K (EN)
Golovin, AV (EN)
Korsakov, AV (EN)
journalArticle (EN)
2014-03-01T01:29:52Z
2009 (EN)
The presence of aragonite in polycrystalline carbonate inclusions in garnet in diamond-grade metamorphic rocks from the Kokchetav Massif, N. Kazakhstan was identified for the first time by means of Raman analyses and mapping, cathodoluminescence images and optical and scanning electron microscopy. Aragonite appears within the inclusions as dirty, chaotically oriented materials surrounded by a clean monocrystalline calcite shell; the grain boundary between the host-garnet and the aragonite-bearing inclusions is often characterized by a wavy or amoeboid shape; no cracks occur around the aragonite-bearing inclusions; no significant shift in the main aragonite Raman band was measured. These observations indicate that residual pressure within the inclusion is minor. These features are inconsistent with an origin of aragonite at peak metamorphic conditions (6 GPa) by decomposition of dolomite. © 2009 E. Schweizerbart'sche Verlagsbuchhandlung. (EN)
Mineralogy (EN)
cathodoluminescence (EN)
scanning electron microscopy (EN)
ultrahigh pressure metamorphism (EN)
aragonite (EN)
Diamond (EN)
calcite (EN)
garnet (EN)
UHPM petrology (EN)
Cathodoluminescence (EN)
Raman spectroscopy (EN)
Kazakhstan (EN)
Calcite (EN)
Aragonite (EN)
diamond (EN)
dolomite (EN)
SEM (EN)
mapping method (EN)
Kokchetav Massif (EN)
European Journal of Mineralogy (EN)
English
E SCHWEIZERBARTSCHE VERLAGS (EN)
National Technical University of Athens
Digital Library of National Technical University of Athens | Dspace@NTUA
Κεντρική Βιβλιοθήκη Ε.Μ.Π.
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