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首页> 外文会议>International Congress on Applied Mineralogy in the Minerals Industry >MINERALIZATION OF IRON DEPOSITS FROM DEHBID AREA, FARS PROVINCE, SOUTH IRAN: GEOCHEMICAJL AND MINERALOGICAL DATA
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MINERALIZATION OF IRON DEPOSITS FROM DEHBID AREA, FARS PROVINCE, SOUTH IRAN: GEOCHEMICAJL AND MINERALOGICAL DATA

机译：来自伊朗南部的波特省Dehbid地区的铁矿床矿化：GeochemicaJL和矿物质数据

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摘要

The Dehbid iron deposits are situated in the northeast Zagros orogenic belt, Sanandaj-Sirjan zone, Iran. The deposits are associated with faults and brecciated zones in metasedimentary rocks of late Paleozoic and silicified dolomite of early Mcsozoic. The ores are dominated by magnetite that occurred as open space fillings. Hematite, goethite, specularite and martite occurred as secondary minor phases. Fe2O3 in mineralized rocks varies between 38-73 wt% and mineralogical analyses indicate that Mn, Co and Ni substitute for Fc~(2+) in magnetite lattice. In the study area, the Co/Ni ratio and P2O5 content characterize hydrothermal origin of magnetite. The high K2O (up to 3.7 wt%) in the samples at the ores-host boundary shows an immature potassic alteration. Field relationships, ore textures and geochemical data on iron ores at Dehbid area are consistent with a hydrothermal origin. Temperature decrease, redox changes, and fluid mixing represent effective mechanisms of ore precipitation.
机译：Dehbid铁矿床位于伊朗的Sanandaj-Sirjan区的东北Zagros Orensenic Belt中。沉积物与早期麦克斯古生岩和硅片白云石的后古生代和硅化白云岩的离心岩体有关。矿石由磁铁矿支配，该磁铁矿被发生为开放空间填充物。赤铁矿，甲酸盐，镜面和火炬发生作为二次阶段。矿化岩中的Fe2O3在38-73wt％之间变化，矿物学分析表明Mn，Co和Ni替代Fc〜（2+）在磁铁矿格中的替代品。在研究区中，CO / Ni比和P2O5含量表征了磁铁矿的水热源起源。在矿石边界处的样品中的高K2O（高达3.7wt％）显示出未成熟的电流改变。在Dehbid区域的铁矿石上的场关系，矿石纹理和地球化学数据与水热源起源一致。温度降低，氧化还原变化，流体混合表示矿石沉淀的有效机制。

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