Number of the records: 1
The system Fe-Nb-S and its geological implications
- 1.
SYSNO ASEP 0356123 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title The system Fe-Nb-S and its geological implications Author(s) Drábek, M. (CZ)
Hybler, Jiří (FZU-D) RID, ORCID, SAI
Rieder, M. (CZ)
Böhmová, Vlasta (GLU-S) RID, SAINumber of authors 4 Source Title Canadian Mineralogist. - : Mineralogical Association of Canada - ISSN 0008-4476
Roč. 48, č. 5 (2010), s. 1059-1068Number of pages 10 s. Language eng - English Country CA - Canada Keywords phase relations ; edgarite ; FexNbyS2 solid solution ; Nb sulfides ; system Fe-Nb-S ; crystal-structure refinements Subject RIV BM - Solid Matter Physics ; Magnetism R&D Projects GA205/08/0122 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z10100521 - FZU-D (2005-2011) AV0Z30130516 - GLU-S (2005-2011) UT WOS 000283870800003 DOI 10.3749/canmin.48.5.1059 Annotation Phase relations within the system Fe–Nb–S were studied experimentally by the technique of evacuated silica glass tubes in the temperature interval 400–1000°C. The dominant field in the system is a broad solid-solution FexNbyyS22 (0 < x < 0.5, 1.0 < y < 1.4) that includes the composition of the mineral edgarite. Also, it forms stable assemblages with pyrrhotite and pyrite. The iron sulfides dissolve limited amounts of Nb: pyrrhotite dissolves up to 1.13 at.% Nb, and pyrite, only 0.02 at.% Nb. We refined the crystal structure of five samples of the FexNbyS2 solid solution, and established the relation between the unit-cell volume and Fe/(Fe + Nb). The occurrence of edgarite can be expected in associations with other sulfides crystallizing under extremely low fugacity of oxygen. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2011
Number of the records: 1