Scheelite, apatite, calcite and tourmaline compositions from the late Archean Hutti orogenic gold deposit: Implications for analogous two stage ore fluids

Gold mineralization at Hutti, southern India has occurred in two stages. Stage-1 mineral assemblage comprises biotite, chlorite, plagioclase, calcite, epidote, actinolite, tourmaline, arsenopyrite, pyrite, pyrrhotite and gold, whereas the stage-2 mineral assemblage is represented by sericite, chlorite, calcite, scheelite, tourmaline, apatite, titanite, pyrrhotite, arsenopyrite and gold. We report here the occurrence of scheelite from the stage-1...