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The phase system Fe-Ir-S at 1100, 1000 and 800 degrees C

Emil Makovicky and S. Karup-Moller
The phase system Fe-Ir-S at 1100, 1000 and 800 degrees C
Mineralogical Magazine (June 1999) 63 (3): 379-385


Phase relations in the dry condensed Fe-Ir-S system were determined at 1100, 1000 and 800 degrees C. Orientational runs were performed at 500 degrees C. Between 1100 and 800 degrees C, the system comprises five sulphides and an uninterrupted field of gamma (Fe,Ir). Fe (sub 1-x) S dissolves 5.8 at.% Ir at 1100 degrees C, 3.4 at.% Ir at 1000 degrees C and 1.0 at.% Ir at 800 degrees C. The solubility of Fe in Ir (sub 2) S (sub 3) , IrS (sub 2) and IrS (sub approximately 3) increases with decreasing temperature, reaching 2.5 at.% in the latter two sulphides at 800 degrees C. Thiospinel "FeIr (sub 2) S (sub 4) " is non-stoichiometric, from Fe (sub 22.3) Ir (sub 19.8) S (sub 58.0) to Fe (sub 18.9) Ir (sub 23.1) S (sub 58.0) , depending on a (sub s) and a (sub Fe) i.e. on a phase association. Thiospinel is absent at 800 and 500 degrees C.

ISSN: 0026-461X
EISSN: 1471-8022
Serial Title: Mineralogical Magazine
Serial Volume: 63
Serial Issue: 3
Title: The phase system Fe-Ir-S at 1100, 1000 and 800 degrees C
Affiliation: University of Copenhagen, Department of Mineralogy, Copenhagen, Denmark
Pages: 379-385
Published: 199906
Text Language: English
Publisher: Mineralogical Society, London, United Kingdom
References: 22
Accession Number: 1999-066042
Categories: General geochemistry
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 2 tables
Secondary Affiliation: Technical University of Denmark, DNK, Denmark
Country of Publication: United Kingdom
Secondary Affiliation: GeoRef, Copyright 2019, American Geosciences Institute.
Update Code: 199922
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