The carbonate rock-hosted epithermal gold deposit of Agdarreh, Takab geothermal field, NW Iran—hydrothermal alteration and mineralisation

The disseminated gold deposit of Agdarreh (24.5 t at 3.7 g/t Au) is hosted in hydrothermally leached Miocene reefal limestone in the Takab geothermal field, which is part of the Cenozoic Urumieh–Dokhtar volcanic arc of NW Iran. Alteration and mineralisation are largely bedding controlled blanket-lik...

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Bibliographic Details
Published in:Mineralium deposita 2008-06, Vol.43 (4), p.383-404
Main Author: Daliran, Farahnaz
Format: Article
Language:English
Subjects:
Arsenates
Carbonate rocks
Cenozoic
Earth and Environmental Science
Earth Sciences
Geology
Gold
Hot springs
Hydrogen sulfide
Lead
Limestone
Mineral Resources
Mineralization
Mineralogy
Minerals
Miocene
Pyrite
Rocks
Studies
Travertine
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Summary:The disseminated gold deposit of Agdarreh (24.5 t at 3.7 g/t Au) is hosted in hydrothermally leached Miocene reefal limestone in the Takab geothermal field, which is part of the Cenozoic Urumieh–Dokhtar volcanic arc of NW Iran. Alteration and mineralisation are largely bedding controlled blanket-like and include: (1) pre-ore decalcification; (2) first-stage silicification associated with pyrite (early pyrite with 3–4 wt% As, late pyrite with
ISSN:0026-4598
1432-1866
DOI:10.1007/s00126-007-0167-x