Partitioning of F between aqueous fluids and albite granite melt and its petrogenetic and metallogenetic significance

Autor:	Rao Bing, Xiong Xiaolin, Zhao Zhenhua, Lai Mingyuan, Zhu Jinchu
Rok vydání:	1998
Předmět:	Aqueous solution Proton Analytical chemistry chemistry.chemical_element Mineralogy Electron microprobe Metal Partition coefficient Albite chemistry Geochemistry and Petrology visual_art visual_art.visual_art_medium Fluorine Geology
Zdroj:	Chinese Journal of Geochemistry. 17:303-310
ISSN:	1993-0364 1000-9426
DOI:	10.1007/bf02837981
Popis:	The fluid/melt partitioning experiments on fluorine were carried out in the system albite-H2O-HF atP = 100 MPa, 770°C ≤T≤800°C: and wt = 2% −6% conditions. The concentrations of fluorine in quenched glasses (melt) were determined by electron microprobe and those of fluorine in the coexisting aqueous fluid were calculated by the method of mass balance. The result shows that the fluorine was concentrated in granitic melt relative to the coexisting fluid. The partition coefficient DF(wt F F1 /wt F Mt ) ranges from 0.35 to 0.89. It increases with increasing fluorine content in the system. This means that there is not just one single value of partition coefficient for fluorine in the granitic melt-fluid system. The partitioning behavior of fluorine in this system depends critically on fluorine and proton (H+) concentrations. Our data suggest that F-rich granitic melts exist in nature and that fluorine may not be an important complexing agent of metal elements in F-bearing fluids.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::127d80e1b05a9d72a106681af7a8f940 https://doi.org/10.1007/bf02837981 Zobrazit plný text záznamu