COMPILATION OF GEOLOGY, MINERALIZATION, GEOCHEMISTRY AND GEOPHYSICAL STUDY OF IP/RS & GROUND MAGNETIC SURVEY AT ROUDGAZ AREA, SOUTHEAST OF GONABAD, KHORASAN RAZAVI PROVINCE

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HAJIMIRZAJAN HOSSEIN; KARIMPOUR MOHAMMAD HASSAN; MALEKZADEH SHAFAROUDI AZADEH; HYDARIAN SHAHRI MOHAMMAD REZA; HAMOONI SEYED JAVAD

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Journal: JOURNAL OF ECONOMIC GEOLOGY Year:2013 | Volume:5 | Issue:1 Page(s): 117-136

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Title

COMPILATION OF GEOLOGY, MINERALIZATION, GEOCHEMISTRY AND GEOPHYSICAL STUDY OF IP/RS & GROUND MAGNETIC SURVEY AT ROUDGAZ AREA, SOUTHEAST OF GONABAD, KHORASAN RAZAVI PROVINCE

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Keywords

ROUDGAZQ2

LUT BLOCKQ2

VEIN MINERALIZATIONQ2

CHARGEABILITYQ2

RESISTIVITYQ2

GGROUND MAGNETICQ2

WELLLOGGINGQ2

Abstract

ROUDGAZ prospect area is a Cu, Sn, Pb, Zn, and Au polymetal vein system located to the southeast of Gonabad and in the northeast of LUT BLOCK. Oxidan subvolcanic Tertiary rocks with monzonite to monzodiorite porphyry composition intruded the metamorphic rocks of middle Jurassic. The majority of intrusive bodies are affected by carbonation, argillic, sericitic, and silicification-tourmaline alteration. Mineralization in the area is controlled by fault and is present as vein with domination of NW-SE direction and 85-90o dip. Primary minerals are quartz, tourmaline, chalcopyrite, pyrite, and secondary minerals are malachite, azurite, and goethite. Geochemical sampling using chip composite method indicated high anomalies of Cu, Sn, Pb, and As (up to 10000 ppm), Zn (up to 5527 ppm), and Au (up to 325 ppb). Broad gossan zone is present in the area and is related to the oxidation of sulfide minerals. IP/RS survey was performed over the geochemical anomalies for identification of the location and extension of sulfide mineralization at depth. Generally, CHARGEABILITY increases in gossan zones, veins, old workings and geochemical anomalies. RESISTIVITY over the quartzite unit and also in locations where mineralized vein is associated with quartz has a high anomaly of up to 425 ohm-m. Due to high geochemical anomaly of Sn and its relation with reduced subvolcanic intrusives, ground magnetic survey was performed to identify the location of magnetite (oxidant) and ilmenite (reduced) series at depth. Variation of Total Magnetic Intensity (TMI) is 335.1 Gamma in the TMI map. The highest magnetic anomalies in the RTP map are located to the north of the survey area which is related to magnetite series (hornblende biotite monzodiorite porphyry) and extend to the south at depth. The lowest magnetic anomaly is located to the center of the survey area and particularly to the east of the ROUDGAZ village correlating the highest CHARGEABILITY and geochemical anomaly. Based on coincidence of geochemical and CHARGEABILITY anomalies, two holes were drilled in the area and 24 samples were collected from the core drills for geochemical analyses. The highest anomalies are accompanied by silicification and chlorite alteration and locations of extension of secondary Fe oxides.

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APA: Copy

HAJIMIRZAJAN, HOSSEIN, KARIMPOUR, MOHAMMAD HASSAN, MALEKZADEH SHAFAROUDI, AZADEH, HYDARIAN SHAHRI, MOHAMMAD REZA, & HAMOONI, SEYED JAVAD. (2013). COMPILATION OF GEOLOGY, MINERALIZATION, GEOCHEMISTRY AND GEOPHYSICAL STUDY OF IP/RS & GROUND MAGNETIC SURVEY AT ROUDGAZ AREA, SOUTHEAST OF GONABAD, KHORASAN RAZAVI PROVINCE. JOURNAL OF ECONOMIC GEOLOGY, 5(1), 117-136. SID. https://sid.ir/paper/180564/en

Vancouver: Copy

HAJIMIRZAJAN HOSSEIN, KARIMPOUR MOHAMMAD HASSAN, MALEKZADEH SHAFAROUDI AZADEH, HYDARIAN SHAHRI MOHAMMAD REZA, HAMOONI SEYED JAVAD. COMPILATION OF GEOLOGY, MINERALIZATION, GEOCHEMISTRY AND GEOPHYSICAL STUDY OF IP/RS & GROUND MAGNETIC SURVEY AT ROUDGAZ AREA, SOUTHEAST OF GONABAD, KHORASAN RAZAVI PROVINCE. JOURNAL OF ECONOMIC GEOLOGY[Internet]. 2013;5(1):117-136. Available from: https://sid.ir/paper/180564/en

IEEE: Copy

HOSSEIN HAJIMIRZAJAN, MOHAMMAD HASSAN KARIMPOUR, AZADEH MALEKZADEH SHAFAROUDI, MOHAMMAD REZA HYDARIAN SHAHRI, and SEYED JAVAD HAMOONI, “COMPILATION OF GEOLOGY, MINERALIZATION, GEOCHEMISTRY AND GEOPHYSICAL STUDY OF IP/RS & GROUND MAGNETIC SURVEY AT ROUDGAZ AREA, SOUTHEAST OF GONABAD, KHORASAN RAZAVI PROVINCE,” JOURNAL OF ECONOMIC GEOLOGY, vol. 5, no. 1, pp. 117–136, 2013, [Online]. Available: https://sid.ir/paper/180564/en

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