Paper Information

Title: 

GEOCHEMICAL EVOLUTION OF GRANITOID SERIES AND GOLD MINERALIZATION, AN OVERVIEW TO EXPLORATION PROGRAM OF IRAN GOLD DEPOSITS

Type: PAPER
Author(s): ROSTAMI PAIDARI GH.A.*,KHAKZAD AHMAD,AZHDARI ALI
 
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Name of Seminar: SYMPOSIUM OF EARTH SCIENCES
Type of Seminar:  SYMPOSIUM
Sponsor:  ORGANIZATION OF GEOLOGICAL OF IRAN
Date:  2006Volume 24
 
 
Abstract: 

In tectonomagmatic Modelling of ore deposits the most important parameters of Gold metallogeny consist of tectonic setting, crustal composition, level of formation, granitoid type (I, S, M, A), compositional evolution, Degree of fractionation (factors such as K/Rb ratio), oxidation state, distance from magma source and mechanism of deposition. the division of granitoid into ilmenite and magnetite series is very useful because Au, Cu and Mo deposits are typically related to magnetite-bearing granitoids. The combination of these parameters and the areal extent of suits can be used on a district to regional scale to interpret relationship between magmatic rocks, metal zonation and type of gold deposits. Recently, remote sensing technique which is able to recognize hydrothemally alteration minerals can be used to identification and delineation of high potentially gold mineralization provinces. Some elements such as Re and Os and isotopic ratios(such as 187Os/188Os) of them are well indicators to understanding the origin of gold in geologic environments. In these paper we discusses tectonomagmatic pattern of Iran gold mineralizations specially porphyry, mesothermal and epithermal ones.

 
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