Dh. Watkinson et Pc. Jones, PLATINUM-GROUP MINERALS IN FLUID INCLUSIONS FROM THE MARATHON DEPOSIT, COLDWELL COMPLEX, CANADA, Mineralogy and petrology, 57(1-2), 1996, pp. 91-96
Platinum-group minerals (PGM) project into fluid inclusions that occur
in chalcopyrite and cubanite from the Marathon deposit, Two Duck Lake
gabbro, Coldwell Complex, Ontario. Semi-quantitative analyses of the
micron-sized PGM were made by SEM-EDS; they reveal Ag-bearing intermet
allic compounds of Pd3Sn-Pd3Pb-Pd3Te (i.e., atokite-zvyagintsevite-kei
thconnite) and telargpalite (Pd2AgTe) on broken, irregular surfaces of
the Cu-Fe-S minerals. Halite daughter minerals, and quenched brine oc
cur in and around some opened fluid inclusions. These data confirm the
hypothesis based on petrography and mineral compositions that saline
fluids remobilized PGE, Cu, and other elements and precipitated them w
ell after crystallization of sulfide and silicate magmas in the Marath
on deposit.