The metal-rich portions of the phase system Cu-Fe-Pd-S at 1000 degrees C, 900 degrees C, and 725 degrees C: implications for mineralization in the Skaergaard intrusion

TY - JOUR

T1 - The metal-rich portions of the phase system Cu-Fe-Pd-S at 1000 degrees C, 900 degrees C, and 725 degrees C

T2 - implications for mineralization in the Skaergaard intrusion

AU - Karup-Møller, Sven

AU - Makovicky, Emil

AU - Barnes, Sarah Jane

PY - 2008

Y1 - 2008

N2 - The sulphur-poor portions of the dry condensed Cu-Fe-Pd-S system were studied at 1000ºC, 900ºC and 725ºC by synthesis in evacuated silicate glass tubes, along with textural observations and electron microprobe analyses of equilibrated reaction products. Sulphide melt coexists with Cu-Fe-Pd alloys, bornite, Fe1-xS and iss (intermediate solid solution, Cabri, 1973) and Pd4S. Compositional data were obtained for the associations bornite-alloy-melt, pyrrhotite-alloy-melt and for immiscible Cu-rich sulphide melts. Partition coefficients for all three metals were derived for the association alloy-melt. Formation of the two new Cu-Pd alloy minerals, skaergaardite and nielsenite, is discussed in terms of the present findings

AB - The sulphur-poor portions of the dry condensed Cu-Fe-Pd-S system were studied at 1000ºC, 900ºC and 725ºC by synthesis in evacuated silicate glass tubes, along with textural observations and electron microprobe analyses of equilibrated reaction products. Sulphide melt coexists with Cu-Fe-Pd alloys, bornite, Fe1-xS and iss (intermediate solid solution, Cabri, 1973) and Pd4S. Compositional data were obtained for the associations bornite-alloy-melt, pyrrhotite-alloy-melt and for immiscible Cu-rich sulphide melts. Partition coefficients for all three metals were derived for the association alloy-melt. Formation of the two new Cu-Pd alloy minerals, skaergaardite and nielsenite, is discussed in terms of the present findings

KW - Faculty of Science

KW - Cu-Pd-Fe-S phase system

KW - nielsenite

KW - skaergaardite

KW - bornite

KW - Cu-Pd-Fe alloy

KW - sulphide melt

U2 - 10.1180/minmag.2008.072.4.941

DO - 10.1180/minmag.2008.072.4.941

M3 - Journal article

SN - 0026-461X

VL - 72

SP - 941

EP - 951

JO - Mineralogical Magazine

JF - Mineralogical Magazine

ER -