Fluid Inclusion Assemblages of the Stratiform Broken Hill Ore Deposit, New South Wales, Australia

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Science  14 Oct 1977:
Vol. 198, Issue 4313, pp. 185-187
DOI: 10.1126/science.198.4313.185-a


Minerals of the Broken Hill lode in New South Wales, Australia, have a rich assemblage of fluid inclusions. Most typically they contain a high-salinity aqueous liquid and a high-density carbon dioxide and methane gas. Northerly trending shear zones in the area are characterized by a distinct assemblage of inclusions. The inclusions provide a record of the sequence of metamorphic fluids since the period of high-grade metamorphism. Inclusions from the period of ore formation have been eliminated by repeated deformation and recrystallization.