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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Mineralogy and petrology 34 (1985), S. 49-66 
    ISSN: 1438-1168
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Description / Table of Contents: Zusammenfassung Granate aus miozänen di-normativen, medium-K Andesiten und aus einem mesozoischen feinkörnigen Albit-Granit wurden petrologisch untersucht. Die chemische Zusammensetzung der Granate, (Alm 57–65,Pyr 14–22,Gross 10–24,Spess 2–5 Mol.-%), gemessen mittels Elektronenstrahl-Mikrosonde, macht es wahrscheinlich, daß diese Granate Hochdruck-Megakristalle sind. Die Granate im Granit (Alm 71–74,Pyr 12–18,Gross 3,5–5,5,Spess 5,6–11) kristallisierten bei niedrigen Drücken und sind wahrscheinlich das Produkt autometasomatischer Vorgänge.
    Notes: Summary Garnets from Miocene di-normative, medium-K andesites as well as from a Mesozoic fine-grained albite granite have been petrologically investigated. The chemical compositions of the garnets from the andesites as determined by electron microprobe (alm 57–65,pyr 14–22,gross 10–24,spess 2–5, -all in mol.-%) are compatible with the garnets being high pressure megacrysts. Garnets from the granite (alm 71–74,pyr 12–18,gross 3.5–5.5,spess 5.6–11) apparently crystallized in a low pressure environment. They are believed to have formed in an autometasomatic event.
    Type of Medium: Electronic Resource
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