RT Journal Article
SR Electronic
T1 Melt Inclusions in Veins: Linking Magmas and Porphyry Cu Deposits
JF Science
JO Science
FD American Association for the Advancement of Science
SP 2109
OP 2111
DO 10.1126/science.1089927
VO 302
IS 5653
A1 Harris, Anthony C.
A1 Kamenetsky, Vadim S.
A1 White, Noel C.
A1 van Achterbergh, Esmé
A1 Ryan, Chris G.
YR 2003
UL http://science.sciencemag.org/content/302/5653/2109.abstract
AB At a porphyry copper-gold deposit in Bajo de la Alumbrera, Argentina, silicate-melt inclusions coexist with hypersaline liquid- and vapor-rich inclusions in the earliest magmatic-hydrothermal quartz veins. Copper concentrations of the hypersaline liquid and vapor inclusions reached maxima of 10.0 weight % (wt %) and 4.5 wt %, respectively. These unusually copper-rich inclusions are considered to be the most primitive ore fluid found thus far. Their preservation with coexisting melt allows for the direct quantification of important ore-forming processes, including determination of bulk partition coefficients of metals from magma into ore-forming magmatic volatile phases.