Abstract
A new occurence of orbiculitic rocks from the Western Zillertal Alps is investigated. The orbicules consist of a core and a shell. The core is poor in potassium feldspar and rich in quartz and biotite. The shell consists mainly of potassium feldspar. Three chemical analyses. The shell consists mainly analyses, and thirty-one modal analyses were carried out. It is concluded that the orbicules have been derived from xenoliths by a partial melting process.
Translated title of the contribution | Investigations on orbiculitic granites from the Zillertal Alps (Tyrol, Austria) |
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Original language | German |
Pages (from-to) | 156-172 |
Number of pages | 17 |
Journal | Tschermaks Mineralogische und Petrographische Mitteilungen |
Volume | 16 |
Issue number | 3 |
DOIs | |
State | Published - Sep 1971 |
Externally published | Yes |