Halogens (F, Cl and Br) at Oldoinyo Lengai volcano (Tanzania): Effects of magmatic differentiation, silicate–natrocarbonatite melt separation and surface alteration of natrocarbonatite

Halogen abundances of natrocarbonatites and their alteration products from Oldoinyo Lengai (Tanzania) are compared to those of associated silicate rocks and to various calcite carbonatites from eleven occurrences worldwide. Fresh natrocarbonatites are extremely enriched in F (up to 3.6wt.%), Cl (up...

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Veröffentlicht in:	Chemical geology 2014-02, Vol.365, p.43-53
Hauptverfasser:	Mangler, Martin F., Marks, Michael A.W., Zaitzev, Anatoly N., Eby, G. Nelson, Markl, Gregor
Format:	Artikel
Sprache:	eng
Schlagworte:	Alterations Bromine Differentiation Enrichment Halogen fractionation Halogens Leaching Melts Natrocarbonatite Oldoinyo Lengai Rocks Separation Silicates TXRF
Online-Zugang:	Volltext
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