Original paper

Primary barite n high-K dacite from the Eastern Rhodope, Bulgaria

Marchev, Peter

European Journal of Mineralogy Volume 3 Number 6 (1991), p. 1005 - 1008

13 references

published: Dec 19, 1991
manuscript accepted: Jul 9, 1991
manuscript received: Mar 13, 1991

DOI: 10.1127/ejm/3/6/1005

BibTeX file

ArtNo. ESP147050306009, Price: 29.00 €

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Abstract

Abstract A high-K dacite dyke of Oligocene age from the Dumbuluk volcano, Eastern Rhodope (Bulgaria) contains a rare occurrence of primary barite. The phenocryst assemblage consists of plagioclase, clinopyroxene, biotite and microphenocrysts of titanomagnetite and accessory apatite and zircon. Petrological data suggest that barite crystallized at a temperature above 750┬░, water pressure about 4 kbar, and fO2 = 2 log units greater than the QFM buffer

Keywords

baritehigh-K daciteEastern RhodopeBulgaria