Relationship between Banded Sulfide Formation (BSF) and Banded Iron Formation (BIF) in Bafq mining district

Category Economic geology & mineral exploration
Group GSI.IR
Location 21th symposium on geosciences
Holding Date 21 May 2008

      The banded structures of volcano?sedimentary deposits are form by alternative actions of mineralization and sedimentation in submarine?exhalative basins. This is the most important structure of sedimentary?exhalative deposits (Oxide, sulphide, carbonate etc. deposits). Banded Sulphides Formation (BSF) is a new term for sedimentary?exhalative sulphide deposits that are genetically simillar to Banded Iron Formation (BIF) in reducing conditions. The kushk Lead?Zinc sulphide deposit is the most important sedimentary?exhalative (BSF) deposit in Bafq mining district that formed in rifting basin associated with volcano?sedimentary ?exhalative?hydrothermal activity. The iron deposits of Bafq mining district are younger than kushk deposit and many evidences indicate that the deposits are of volcanic?sedimentary?exhalative?hydrothermal (BIF) type rather than magmatic deposit and related to sulphide deposits of the area. The iron deposits were occurred by combined volcano?hydrothermal activity at a later period of rifting and in oxidizing conditions. Exhalation of iron bearing hydrothermal solutions formed vein?breccia and massive (proximal) and banded (Distal) deposits in the area.