Paper Information

Title: 

NEW GEOCHEMICAL AND STRUCTURAL DATA ON THE RHYOLITIC AND KERATOPHYRIC ROCKS AND THEIR RELATIONSHIP TO IRON MINERALIZATION AT BAFQ MINING DISTRICT-CENTRAL IRAN

Type: PAPER
Author(s): MOHSENI SADEGH*,AFTABI ALIJAN
 
 *SHAHID BAHONAR UNIVERSITY OF KERMAN, FACULTY OF SCIENCE, DEPARTMENT OF GEOLOGY
 
Name of Seminar: SYMPOSIUM OF EARTH SCIENCES
Type of Seminar:  SYMPOSIUM
Sponsor:  ORGANIZATION OF GEOLOGICAL OF IRAN
Date:  2006Volume 24
 
 
Abstract: 

The bafq mining district is located in the eastcentral Iran, Yazd province. This area include Precambrian basement with Infracambrian to Triassic platform. Most of the units in the region occur in the Infracambrian volcano-sedimentary exhalative com plex. Iron mineralization occurs as breccia pipes, massive ore and banded Iron ore associated with Rhyolitic-keratophyric Tuffs, lavas and Jaspilite. The most important host rocks to the iron ore are keratophyric and sodic alkaline rhyolite formed by sodium metasomaism during submarine exhalative volcanism.The main ore minerals consist of magnetite, hematite and pyrite that in the supergene zones are weathered to goethite.The presence of tourmaline, albite, actinolite and scapolite in the ore and host rocks with Jaspilite, keratophyre, glaciomarine conglomerate (diamictites) and glacial floating fragments (dropstones) and absence of gabbroic, Noritic and anorthositic rocks, indicate the Rapitan model of banded Iron Formation.

 
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