Mass balance relationships and skarn-forming processes at the King Island scheelite deposit, King Island, Tasmania, Australia.

Abstract

Garnet-pyroxene-scheelite-quartz-calcite skarn zones represent products of replacement of marble occurring in thin layers in massive hornfels or of marble enclosing thin felsic interlayers. Depending on the geological setting, the zoning process involved an intermediate stage of development of wollastonite-vesuvianite-scheelite-calcite rock or amphibole-epidote-scheelite-quartz-calcite skarn. Replacement of the present marble and hornfels is considered to have been a constant volume process. -M.S.