Magmatic Na-rich phlogopite in a suite of gabbroic crustal xenoliths from Volcán San Pedro, Chilean Andes : evidence for a solvus relation between phlogopite and aspidolite

Magmatic Na-rich phlogopite (1–5 wt% Na2O) is present as a late-crystallizing mineral in two groups of texturally and mineralogically distinct gabbroic xenoliths at Volcán San Pedro (36°S, Chile), an Andean arc volcano. Phlogopites are characterized by high 100·Mg/(Mg + Fe) (up to 83) and high Cr2O3...

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Bibliographic Details
Main Authors: Costa, Fidel, Dungan, Michael, Singer, Brad S.
Other Authors: School of Physical and Mathematical Sciences
Format: Article
Language:English
Published: 2012
Subjects:
Online Access:https://hdl.handle.net/10356/95483
http://hdl.handle.net/10220/8721
http://ammin.geoscienceworld.org.ezlibproxy1.ntu.edu.sg/content/86/1-2.toc
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Institution: Nanyang Technological University
Language: English