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Paper Information

Journal:   GEOSCIENCES   FALL 2012 , Volume 22 , Number 85; Page(s) 9 To 14.
 
Paper: 

GEOCHEMISTRY AND FLUID INCLUSIONS STUDIES OF LOW-SULFIDATION EPITHERMAL GOLD MINERALIZATION IN THE MIRKUH ALI MIRZA AREA, SARAB, NW IRAN

 
 
Author(s):  MAGHSOUDI A.*, YAZDI M., MEHR PARTOU M., VOSOUGHI ABEDINI M.
 
* DEPT. OF MINING AND METALLURGY ENGINEERING, AMIRKABIR UNIVERSITY, TEHRAN, IRAN
 
Abstract: 

The Mirkuh Ali Mirza gold mineralization is located in north Sarab in the Western Alborz–Azerbaijan structural zone. Mineralization was formed in the form of a vein occurring in Neogene dacitic and rhyodacitic tuff along a series of NW–SE trending fault; Mineralization associated with quartz-sericite-adularia-calcite and pyrite (<1%) assemblages is a typical of low-sulfidation epithermal gold mineralization. The fluid inclusion data from quartz minerals indicate homogenization temperature of 161-260oC and salinities of 0.5 to 6.5 wt% NaCl equiv. The variation in gold grade in quartz vein is 270-3240 ppb. The highest gold content is in lattice and breccias quartz that can indicate direct relationship between boiling to gold deposition. The idea is supported by coexistence of vapor-dominant and liquid-dominant fluid inclusions.

 
Keyword(s): EPITHERMAL GOLD, LOW-SULFIDATION, MIRKUH ALI MIRZA, SARAB
 
References: 
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