Investigation of trace elements and rare earth elements geochemistry in Goret Pb-Zn deposit Kelardasht region (Central Alborz)

Subject Areas :

Javad Pasand Masoumi ¹ , Alireza Ganji ² , Mohammadreza Ansari ³ , Mohammad Modarresnia ⁴

1 - دانش آموخته کارشناسی ارشد زمین شناسی اقتصادی، عضو باشگاه پژوهشگران جوان، دانشگاه آزاد اسلامی، واحد چالوس
2 - دانشیار، گروه زمین شناسی، دانشکده علوم پایه، دانشگاه آزاد اسلامی، واحد لاهیجان
3 - استادیار، گروه زمین شناسی، دانشگاه آزاد اسلامی، واحد چالوس
4 - مربی، گروه علوم پایه، دانشگاه آزاد اسلامی، واحد رشت

Received: 2016-09-07 Accepted : 2016-09-07 Published : 2012-06-21

Keywords: Sulfide mineralization, Epigenetic, REE, Akapol, Goret deposit,

Abstract :

Base-metals sulfide mineralization in Galena and sphalerite forms with little amount of pyrite, in Mobarak andElika formation have been occurred in the studied region. Chemically, all deposit phases have compositinghemogen region. Mineralization has been followed the fault general process in the region, and the main texturesin the ore are vein texture and open space filing. Genetically, studied deposits are epigenetic. Field featuresessentially have resulted mineralogical investigations and geochemical surveys on trace elements and rare earthelements (REE), they have included ore metals source in sulfide Pb-Zn mineralization in Kelardasht regionshowed carbonate - hosted mineralized rocks (upper Paleozoic , lower Triassic ) in deposit. In genetic relationbetween Pb-Zn mineralization in this deposit with Akapol monzonit quartz - monzodiorite intrusion (aged toupper Eocene - lower Paleocene), Were located near to studied Pb-Zn deposits, Akapol intrusion have played asrequired heating source that heated ore fluids. According to Eu negative anomalies in ore and host rock samples,and were seemed The source of hydrothermal fluids in the studied region have been the surface and atmosphericfull - oxygen water (meteoric) have been warm through closing Akapol intrusion and have been solved theelements and then have been deposited them in the host rock fault crushes, cracks and joints, and then circulationin base-metals have enriched carbonate hosted units.