Feldspar evolution in the Roxby Downs Granite, host to Fe-oxide Cu-Au-(U) mineralisation at Olympic Dam, South Australia
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文摘
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Feldspar textures record the transition from magmatic to hydrothermal conditions.

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Significant albite and hydrothermal K-feldspar have been recognised at Olympic Dam.

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Geothermobarometric estimates support magma mixing (at > 700–560 °C and ~ 2.2 kbar).

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