Primary Allanite in Andesitic Rocks from the Poros Volcano, Greece

P. Mitropoulos
University of Athens, Department of Geology, Panepistimiopolis, Ano Ilisia, Athens 15701, Greece

Abstract: Primary allanite crystals occurring in andesitic rocks from Poros, NE Peloponnese, Greece were studied. Although the allanite shows high REE content, its presence does not affect the whole-rock REE content of the andesite. It is suggested that the formation of allanite crystals reflects the crystallization history of the andesitic rocks where allanite occurs. These andesitic rocks are the most basic rocks in which allanite has been reported.

Keywords: allanite • andesitic rocks • rare earth elements • Poros • Greece

Mineralogical Magazine; October 1987 v. 51; no. 62; p. 601-604; DOI: 10.1180/minmag.1987.051.362.15
© 1987, The Mineralogical Society
Mineralogical Society (