TY - JOUR
T1 - The phase system Fe-Ir-S at 1100, 1000 and 800 degree C.
AU - Makovicky, Emil
AU - Karup-Møller, Sven
PY - 1999
Y1 - 1999
N2 - 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). Fe1-xS 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 Ir2S3, IrS2 and IrSsimilar to 3 increases with decreasing temperature, reaching 2.5 at.% in the latter two sulphides at 800 degrees C. Thiospinel 'FeIr2S4' is nonstoichiometric, from Fe22.3Ir19.8S58.0 to Fe18.9Ir23.1S58.0, depending on a(S) and a(Fe) i.e. on a phase association. Thiospinel is absent at 800 and 500 degrees C.
AB - 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). Fe1-xS 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 Ir2S3, IrS2 and IrSsimilar to 3 increases with decreasing temperature, reaching 2.5 at.% in the latter two sulphides at 800 degrees C. Thiospinel 'FeIr2S4' is nonstoichiometric, from Fe22.3Ir19.8S58.0 to Fe18.9Ir23.1S58.0, depending on a(S) and a(Fe) i.e. on a phase association. Thiospinel is absent at 800 and 500 degrees C.
U2 - 10.1180/minmag.1999.063.3.09
DO - 10.1180/minmag.1999.063.3.09
M3 - Journal article
SN - 1471-8022
VL - 63
SP - 379
EP - 385
JO - Mineralogical Magazine
JF - Mineralogical Magazine
IS - 3
ER -