Quick
Search: 		  
advanced search
 GSW Home   GeoRef Home   My GSW Alerts   Contact GSW   About GSW   Journals List   Help 
Mineralogical Magazine Don't get GSW? Talk to your librarian.
JOURNAL HOME HELP CONTACT PUBLISHER SUBSCRIBE ARCHIVE SEARCH TABLE OF CONTENTS
Mineralogical Magazine; February 2007; v. 71; no. 1; p. 63-79; DOI: 10.1180/minmag.2007.071.1.63
© 2007 Mineralogical Society of Great Britain and Ireland
This Article
Right arrow Figures Only
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Right arrow Citation Map
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in ISI Web of Science
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via ISI Web of Science (1)
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Hurai, V.
Right arrow Articles by Thomas, R.
Right arrow Search for Related Content
GeoRef
Right arrow GeoRef Citation

Mineral-melt-fluid composition of carbonate-bearing cumulate xenoliths in Tertiary alkali basalts of southern Slovakia

V. Hurai1,*, M. Huraiová2, P. Konecny3 and R. Thomas4

1 Geological Institute, Slovak Academy of Sciences, 840 05 Bratislava, Slovakia
2 Department of Mineralogy and Petrology, Comenius University, 842 15 Bratislava, Slovakia
3 Geological Survey of Slovakia, Mlynská dolina, 817 04 Bratislava, Slovakia
4 GeoforschungsZentrum, Telegrafenberg A51, 14473 Potsdam, Germany

* E-mail: vratislav.hurai{at}savba.sk

Two types of carbonatic cumulate xenoliths occur in alkali basalts of the northern part of the Carpatho-Pannonian region, Central Europe. One is dominated by Ca-Fe-Mg carbonates with randomly distributed bisulphide globules (Fe1+xS2, x = 0–0.1), Mg-Al spinel, augite, rhönite, Ni-Co-rich chalcopyrite, and a Fe(Ni,Fe)2S4 phase. The second, carbonatic pyroxenite xenolith type, is composed of diopside, subordinate fluorapatite, interstitial Fe-Mg carbonates, and accessory K-pargasite, F-Al-rich ferroan phlogopite, Mg-Al spinel, albite and K-feldspar. All accessory minerals occur in ultrapotassic dacite-trachydacite glass in primary silicate melt inclusions in diopside, together with calcio-carbonatite and CO2-N2-CO inclusions. Textural evidence is provided for multiphase fluid-melt immiscibility in both xenolith types. The carbonatic pyroxenite type is inferred to have accumulated from differentiated, volatile-rich, ultrapotassic magma derived by a very low-degree partial melting of strongly metasomatized mantle. Mineral indicators point to a genetic link between the carbonatite xenolith with olivine-fractionated, silica-undersaturated alkalic basalt ponded at the mantle-crust boundary.

KEYWORDS: carbonatite, rhönite, potassic pargasite, bisulphide melt, Carpathians




This article has been cited by other articles:


Home page
 Mineral MagHome page
E. S. Grew, U. Halenius, M. Pasero, and J. Barbier
Recommended nomenclature for the sapphirine and surinamite groups (sapphirine supergroup)
Mineralogical Magazine, December 23, 2008; 72(4): 839 - 876.
[Abstract] [Full Text] [PDF]


JOURNAL HOME HELP CONTACT PUBLISHER SUBSCRIBE ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 2009 by Mineralogical Society of Great Britain and Ireland