The Miduk porphyry copper deposit is located in Kerman province, 85 km northwest of the Sar Cheshmeh porphyry copper deposit, Iran. The deposit is hosted by Eocene volcanic rocks of andesitic -basaltic composition. The porphyry-type mineralization is associated with two Miocene calc-alkaline intrusive phases (P1 and P2, respectively). Five hypogene alteration zones are distinguished at the Miduk deposit, including magnetite-rich potassic, potassic, potassic -phyllic, phyllic and propylitic. Mineralization occurs as stockwork, dissemination and nine generations (magnetite, quartz -magnetite, barren quartz, quartz-magnetite-chalcopyrite-anhydrite, chalcopyrite -anhydrite, quartz-chalcopyrite-anhydrite-pyrite, quartz-molybdenite-anhydrite ± chalcopyrite ± magnetite, pyrite, and quartz-pyrite-anhydrite ± sericite) of veinlets and veins. Early stages of mineralization consist of magnetite rich veins in the deepest part of the deposit and the main stage of mineralization contains chalcopyrite, magnetite and anhydrite in the potassic zone. The high intensity of mineralization is associated with P2 porphyry (Miduk porphyry). Based on petrography, mineralogy, alteration halos and geochemistry, the Miduk porphyry copper deposit is similar to those of continental arc setting porphyry copper deposits. The Re-Os molybdenite dates provide the timing of sulfi de mineralization at 12.23 ± 0.07 Ma, coincident with U/Pb zircon ages of the P2 porphyry. This evidence indicates a direct genetic relationship between the Miduk porphyry stock and molybdenite mineralization. The Re-Os age of the Miduk deposit marks the main stage of magmatism and porphyry copper formation in the Central Iranian volcano-plutonic belt. Keywords : alteration , central Iranian volcano-plutonic copper belt , Miduk porphyry copper deposit , mineralization , Re-Os geochronology . ( Shahabpour, 2000 ).The Miduk porphyry copper deposit is located in the Shahr-Babak area in Kerman province, Iran. This deposit is located 85 km NW of the Sar Cheshmeh porphyry copper deposit ( Fig. 1 ). Preliminary mineral exploration in this area was carried out in 1967 -1970 by Parjam and Metallgesellschaft ( Hassanzadeh, 1993 ). So far, more than 50 diamond drill holes with a maximum depth of 1013 m have proved the existence of the sizeable and potential porphyry copper mineralization at the Miduk deposit. The orebody contains 170 million tons of ore, with an average grade of 0.86% Cu, 0.007% Mo, 82 ppb Au and 1.8 ppm Ag. Supergene enrichment blankets average approximately 50 m thickness and comprise the primary source of Cu ore.To further understand the regional and local geologic relationships and timing of mineralization, this contribution presents aspects of petrography, alteration, mineralization, vein classifi cation and Re-Os isotope age of molybdenite in the Miduk deposit. Regional geology of Miduk areaThe oldest units in the area ( Fig. 2 ) are CenomanianTuronian calcareous fl ysch ( Saric et al. , 1971 ) that are unconformably overlain by Paleocene Kerman cong...

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Heavy metal pollution caused by traffic activities is increasingly becoming a great threat to urban environmental quality and human health. In this paper, soils of Kerman urban and suburban areas were collected to assess the potential effects of traffic and other vehicle-related pollution by heavy metal accumulation in soils. Eighty-six samples were collected along streets and from residential and rural sectors, as well as vehicle-related workshops from depth of 0-5 and 15-20 cm and analyzed by flame atomic absorption spectrometry (FAAS) for heavy metals (Cd, Cr, Cu, Pb, Sn and Zn), as well as major elements (Al, Ca, Fe and Mn). Several hot-spot areas were identified in the composite geochemical maps produced based on Geographical Information System (GIS) technology. The majority of the hot-spot areas were identified to be vehicle-related workshops, fuel stations and road junctions. The most polluted hot-spot in the study area was located in soils close to a car battery processing workshop in the southwestern part of Kerman city, with concentrations of Cd (0.32 mg/kg), Cr (169 mg/kg), Cu (250 mg/kg), Pb (5,780 mg/kg), Sn (27.2 mg/kg) and Zn (178 mg/kg) of 1, 8.5, 8.3, 230, 13.5 and 3 times more than the relevant mean concentrations in natural soils, respectively. Traffic pollution has resulted in significant accumulation of heavy metals in soils and sediments, and that level of accumulation varied remarkably among elements. Based on X-ray diffraction analysis, most parts of soils and sediments of the Kerman basement consist of calcite and clay minerals. Abundance of clay minerals and medium to alkaline pH causes low mobility of heavy metals in soils of Kerman.

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