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Paper Information

Journal:   JOURNAL OF EARTH AND RESOURCES   FALL 2009 , Volume 2 , Number 1 (4); Page(s) 65 To 73.
 
Paper: 

MINERALOGICAL ZONING OF ALTERATION OCCUR IN LENGTH OF SARI-DARE FAULT - SOUTH BOEIN_ZAHRA AREA

 
 
Author(s):  NABAEI T.*, KHAKZAD AHMAD, HOSSEINI MAHDI
 
* ISLAMIC AZAD UNIVERSITY, SCIENCE AND RESEARCH BRANCH, TEHRAN, IRAN
 
Abstract: 

The study area is a portion of Oromieh - Bazman magmatic belt in central Iran structural zone that located in south of Boein-Zahra city (Qazvin province). In this area, volcanic and pyroclastic formations cut off with a main fault that called Sari-dare fault, and in length of this fault and into the wall rocks occurs a large extensive alteration. Sari-dare fault has up to 20km length at strike of NW to SE and in field outcropped with an approximately wide valley. Wall rocks alteration occurrences mainly indicate two forms that those are vertical and horizontal zoning. Mineralogical and chemical analysis of zones indicates that this type of alteration is "acid sulfate" type. In this case, in vertical zoning in order from down to up, advanced angelic, alunitic and silicified zones and in horizontal zoning from fault surface to wall rocks, advanced angelic and propylitic zones resulted. Identification of zoning is very important in related mineral exploration and extraction project, because the mineral contents of zones are different and should not be mixed together.

 
Keyword(s): ALTERATION, ACID SULFATE, ZONING, PROPYLITIC, WALLROCK
 
References: 
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