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Conference Proceedings

PACRIM 2004

Conference Proceedings

PACRIM 2004

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Distribution of Alteration and Mineralisation in Northern Carlin Trend Gold Deposits, Nevada

A series of petrological studies were carried out on the characteristics of alteration and mineralisation in mainly structural-controlled (Deep Star, Meikle, Deep Post) and predominantly lithological-controlled (Post-Betze-Screamer and West Leeville) gold deposits in the northern district of the Carlin trend, Nevada. Alteration and mineralisation in these deposits are hosted in a sequence of calcareous clastic units of the Devonian Popovich Formation, into which have been emplaced a number of Jurassic intrusions, and syn- to post-mineral Eocene dikes._x000D_
Four hydrothermal events have been recognised in these deposits: an initial Devonian base metal system and early diagenesis; a Mississippian stage of alteration in conjunction with burial metamorphism; contact and hydrothermal alteration and base metal-gold mineralisation associated with the emplacement of the Jurassic intrusions; and a Carlin-style gold system related to Eocene magmatism.
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  • Distribution of Alteration and Mineralisation in Northern Carlin Trend Gold Deposits, Nevada
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  • Published: 2004
  • PDF Size: 1.404 Mb.
  • Unique ID: P200405023

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