On the Poikilitic Nature of Jabal Al Hasawinah Eudialyte

Khaled M. Oun
University of Al Fatah, Department of Geology, P.O. Box 13258, Tripoli, Libya

Abstract: Poikilitic eudialyte outcrops in a strongly peralkaline phonolithic cumulo-dome in Jabal Al Hasawinah, Libya. Textural relationships reveal that the eudialyte has formed at a very late stage of the rock petrogenesis. Electron microprobe analyses confirm its volatile (hydrous) nature and low REE content.

Keywords: eudialyte • phonolite • Jabal Al Hasawinah • Libya

Mineralogical Magazine; December 1991 v. 55; no. 381; p. 543-547; DOI: 10.1180/minmag.1991.055.381.07
© 1991, The Mineralogical Society
Mineralogical Society (www.minersoc.org)