Geology, mineralization and geochemistry of Pade-Bid iron occurance, SW Bardaskan, South Khorasan province


1 Department of Geology and Research Center for Ore Deposit of Eastern Iran, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran

2 Department of Geology, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran


Pade-Bid iron occurance is located at northeast of Kashmar-Kerman zone, which is one of the most important iron metallogenic zone in Iran. Lithology of the area includes alternation of metamorphosed carbonate rocks, slate and phyllite, which are intruded by dioritic and gabbroic intrusions. Based on structural controls of orebody, metasomatic replacement and formation of low temperature H2O-beraring minerals and occurrence of magnetite and pyrite associated with chlorite, epidote, calcite and quartz, the iron mineralization is low temperature skarn-type. Magnetite chemistry and Ti, Ca, V, Al, Mn, Ni, and Cr contents are similar to those of skarn deposit. REE patern indicate positive Eu and Ce and negative Gd, Yb and Sm anomalis. The source of Fe mineralization is probably a younger intrusive body at depth due to field observations. Based on principal analysis on REE, the source of ore fluid is mostly magmatic water, which was ascended within fault zone and reacted with carbonate units to form the orebody. The northeastern part of Kashmar-Kerman zone has a great potential for Fe skarn-type deposits, which should be given more attention.


Main Subjects

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