Majid Ghaderi

Tarbiat Modares University | TMU · Department of Economic Geology

The Mufushan (MFS) and Lianyunshan (LYS) granitic complexes are located in northeastern Hunan (South China) and host important Nb-Ta mineralization. Fine-grained muscovite granites (FGMGs) occur as intrusions within the Lengjiaxi Group and show a spatial relationship with the ore-bearing pegmatites. Here, geochemical, geochronological, and isotopic...

The Xikuangshan and Woxi Sb-(Au-W) deposits are the most important Sb-related mineralization in the Xiangzhong metallogenic province, South China. In this study, trace element, U-Pb dating, and Hf isotopic results of zircon in typical ore samples from the Xikuangshan and Woxi deposits provide new insights into metal/fluid sources and mineralization...

The Tarom metallogenic belt of the Alborz magmatic belt in NW Iran is characterized by two alignments of intrusion in its northern and southern parts. The northern intrusion is younger than the southern one. Mineral chemistry investigations on the northern and southern intrusions characterize calc-alkaline magmatism. The northern intrusion consists...

Stratabound or “Manto-type/volcanic red-bed” Cu-(Ag) deposits occur along the Urumieh-Dokhtar magmatic arc (UDMA), Sanandaj-Sirjan Zone (SSZ), Alborz Magmatic Assemblage (AMA), Sabzevar Zone, and Lut Block structural zones of Iran, and are hosted by Cretaceous and Eocene volcanic and volcano-sedimentary rocks. The most important deposits of this ty...

The Kahak, Raveh, and Khoreh stratabound sideritic-ankeritic iron deposits are located in the Malayer-Esfahan metallogenic belt (MEMB), Iran. Geological, geochemical, fluid inclusion and S isotope studies have been carried out on the Kahak, Raveh, and Khoreh deposits which are hosted by different types of Lower Cretaceous dolomite, sandstone, and t...

The North Narbaghi (N-Narbaghi) Cu-Ag deposit in the central part of the Urumieh-Dokhtar magmatic arc (UDMA) of Iran is hosted by Eocene volcanic sequences and Oligo-Miocene intrusions of arc affiliation. The mineralization can be divided into five stages that are represented by barren hydrothermal breccias, Cu-Fe sulfides cementing in the breccias...

The Gorouh copper deposit in the southwest of Rayen in Kerman province is one of the porphyry copper deposits of the Kerman Copper Belt. Due to the diversity of volcano-plutonic events in this prospecting area and the important role of intrusions in mineralization, the differentiation of these plutons was investigated. During these studies, 162 thi...

The objective of this paper is to detect various gold and copper mineralization stages according to surface lithogeochemical data utilizing zonality index and spectrum-area (S-A) multifractal modeling along with geological data in the Au-(Cu) intrusion-related Gouzal-Bolagh deposit, northwestern Iran. Gold mineralization at Gouzal-Bolagh consists o...

The Manto-type copper deposits of the Qom-Saveh region are located in the central part of the Urumieh-Dokhtar magmatic arc and occurred in the Eocene volcano-sedimentary sequence. The most important deposits in the studied area are East Narbaghi, Khankishi, Veshnaveh, and Kahak. The geometry of mineralization is stratabound and hosted in the silty...

The Yamaghan deposit is located in the southeast of Zanjan, within the Tarom subzone of Alborz magmatic belt in NW Iran. The rocks of the area are a collection of Eocene volcano-sedimentary units. Cu (Ag) mineralization in the deposit has occurred as stratabound in the mega porphyritic andesite unit. The main sulfide ores of chalcocite, bornite, ch...

Research is conducted to investigate whether or not, apart from the Chodarchay deposit, there are other examples of porphyry-type mineralization associated with epithermal deposits in the Tarom metallogenic belt of the Alborz zone, NW Iran. Homogenization temperature, final ice-melting, and salinity values are determined for fluid inclusions in mos...

The Mahour prospecting area is located 40 km northeast of Badroud. In terms of geological divisions of Iran, this area is situated in the middle part of the Urumieh-Dokhtar magmatic arc. Regarding the age, the rock outcrops of the area are related to Eocene magmatism. The oldest units in the area are volcanic rocks of andesite-dacite and andesite,...

The Hefdahchenar prospecting area is located 85 km northeast of Pariz, in the Dehaj-Sardoueieh subzone of the Urumieh-Dokhtar magmatic arc. The geology of this area is mainly composed of volcanic-sedimentary rocks and Tertiary intrusive masses, of which the most outcrops of the area are Eocene volcanic rocks and Mamzar granodiorite massif (batholit...

The Hefdahchenar copper deposit is located 85 km northeast of Pariz, in the Dehaj-Sardoueieh subzone of the Urumieh-Dokhtar magmatic arc. The geology of the area is mainly composed of volcanic-sedimentary rocks and Tertiary intrusions, of which most outcrops are the Eocene volcanic rocks and Mamzar granodiorite to quartz-diorite intrusion (batholit...

The Mahour base metal deposit is located in the northeast of Badroud in the Isfahan province and in the middle part of the Urumieh-Dokhtar magmatic arc. The rock units exposed in the area are a collection of Eocene volcanic (andesite, andesitic basalt), tuff and pyroclastic rocks which have been cut by granodiorite, monzodiorite and granite intrusi...

The major target of this research is the classification of pyrite types using fractal and stepwise factor analyses in the Chah Zard ore deposit, Central Iran. The ore occurs within a breccia/vein type and the major ore mineral hosting gold mineralization is pyrite. In this study, data were selected using optical, scanning electron microscopy (SEM)...

Introduction The investigated area in northeastern Iran that is known as the Tarik Darreh arsenopyrite-Au-W prospecting target is situated in the Kopeh Dagh zone (Fig. 1). Most of the study area is covered with black slate rocks which most authors have referred to as Upper Triassic with Norian age (e.g., Behroozi et al., 1993). Plutonic rocks with...

The Kashan plutons are situated in the central part of Urumieh-Dokhtar magmatic arc recording subduction-related magmatism within the Alpine-Himalayan orogeny in Iran. These rocks consist of different calc-alkaline plutonic rocks including gabbro, gabbroic diorite, microdiorite, monzodiorite, tonalite, granodiorite, and granite. These plutons were...

Chargar area is located near the southern border of Tarom subzone within the Alborz magmatic belt of NW Iran. Two types of intrusions, mainly present in the southern part of the area, have been identified. These bodies intruded into the Karaj Formation volcanic and volcaniclastic rocks. Type-I intrusions occur in the south and include two magmatic...

The Zehabad Pb-Zn-Au-Ag (Cu) deposit lies in the Alborz magmatic arc of northwestern Iran. Ore-bearing breccia veins hosted by Eocene tuffs emplaced along the 80-130 trending fault and fracture zone. Mineralization occurs in contact of the late Eocene igneous bodies and the Eocene volcanic and volcano-sedimentary Karaj Formation. Mineralization for...

The Chargar deposit in the southern part of Tarom metallogenic belt of the Alborz structural zone, NW Iran, shows a volcaniclastic-hosted, low-sulfidation epithermal gold mineralization. The host rocks are part of the Eocene volcanic and volcaniclastic sequence of the Karaj Formation. The main host rock is an andesitic lapilli-lithic tuff. The main...

The Kahak copper deposit occurs in the Eocene volcano-sedimentary sequence of Qom region, Urumieh-Dokhtar magmatic arc. The oldest rock unit in this sequence is a crystal tuff, overlying by tuff, andesite, sandstone, conglomerate and limestone. Host rocks to the Kahak deposit include andesite and tuff and the geometry of mineralization is stratabou...

Introduction The Khunik gold prospecting area is located 106 km south of Birjand, in the Khorasan Jonoubi province. The Khunik area is located in a strategic part of the Lut Block that includes many instances of mineralization such as the Qaleh Zari IOCG deposit (Karimpour et al., 2005; Richards et al., 2012), the Maherabad porphyry-type Cu-Au (Ma...

The North Narbaghi deposit is located approximately 26 km northeast of the city of Saveh in the central part of Urumieh-Dokhtar magmatic arc of Iran. In this area, the Oligo-Miocene intrusive rocks cut the Eocene volcano-sedimentary rocks intruding into the surrounding rocks causing extensive alteration zones such as phyllic, argillic, propylitic a...

Stream sediment samples in two sizes of sand and clay/silt from the Chodarchay and Gilankesheh rivers which pass through the Chodarchay copper deposit, northwestern Iran, were measured for their metal concentrations using a sequential extraction procedure. The average concentrations of cadmium (18.22) in sediments from the rivers exceed the world a...

The Tarom subzone, to the west of the Cenozoic Alborz magmatic belt in NW Iran, hosts a large number of high-, intermediate- and low-sulfidation epithermal deposits and prospects, associated with voluminous Eocene-Oligocene volcanism and plutonism. The Chargar deposit is an example of epithermal Au-Cu mineralization from the southern part of Tarom....

This study is an investigation on geochemical exploration and economic geology of Qare-Naz 1:50,000 sheet, western Zanjan province. The scope of the study is to presentation of mineral pomissing area in a regional scale. For this reason, geochemical sampling was initially performed. The samples were analyzed by emission spectrometry, polarography a...

Introduction Manganese deposits are classified as hydrogenous, diagenetic and hydrothermal deposits based on their mineralogy, chemical composition, and tectonic setting (Hein et al., 1997). Hydrogenous manganese deposits have slowly precipitated from seawater (2-10 mm/Myr) (Ingram et al., 1990). These deposits contain iron and are poor in manganes...

The Chodarchay Cu-Au deposit in northwestern Iran represents an example of the transition from the deep porphyry mineralization stage overprinted by the shallow high-sulfidation epithermal stage in porphyry – high sulfidation epithermal systems. The mineralization at Chodarchay mostly occurred within the Eocene volcanic and volcaniclastic units; so...

This book explains geological aspects of porphyry copper deposits with emphasis on porphyry copper deposits in structural zones of Iran including Urumieh-Dokhtar, Ahar-Arasbaran, Tarom, Alborz and Lut Block.

The Chodarchay area is located 50 km east of the city of Zanjan, within the Tarom-Hashtjin subzone, in the Western Alborz structural zone of NW Iran. Igneous rocks in the area include intrusive granitic (phases I and II), and volcanic rocks. Geochemical characteristics of the granitic rocks were determined using their trace and rare earth element (...

The Raziabad porphyry copper deposit is located 30 km north of the city of Jiroft, in southeastern part of the Urumieh-Dokhtar magmatic arc, southeastern Iran. Several intrusive bodies including diorite, gabbro, granodiorite and quartz-diorite associated with groups of dikes with similar composition as well as dissimilar composition with the intrus...

The Lak base metal (-Au) deposit is located in south Buin Zahra in the Urumieh-Dokhtar magmatic belt. The rock units exposed in the deposit area include Miocene volcanic rocks of mainly andesi-basalt and dacite composition crosscut by microdioritic subvolcanic intrusions. The Lak deposit occurs as sulfide-bearing silicic veins of E-W direction in a...

The Chodarchay porphyry– high-sulfidation epithermal Cu-Au deposit in the Tarom subzone of the western Alborz structural zone of NW Iran is related to quartz-monzonite and alkali-granite intrusions that were emplaced within the volcanic-volcaniclastic rocks of Karaj Formation during Tertiary. The Chodarchay deposit formed as a high-sulfidation epit...

The Golijeh base metal - silver deposit in northeast Zanjan is located in the Tarom subzone of western Alborz – Azerbaijan structural zone. Lithologic units in the area are volcanic-pyroclastic rocks of Eocene age with a composition of crystalline tuff, lithic tuff, volcanic breccia and andesitic lavas of the Kordkand member of Karaj Formation. The...

Zanjan-Manjil thrust with right lateral strike-slip component system produced a semi-brittle fracture zone in the Tarom subzone of the Alborz-Azerbaijan belt. This semi-brittle zone provides appropriate extensional spaces for intrusive bodies and their related hydrothermal fluid activities that lead to pervasive Zn, Pb, Au, Ag (Cu) mineralization i...

The Arasoo iron deposit is located in northwest Qazvin, the Tarom subzone of the western Alborz-Azerbaijan structural zone of NW Iran. The geology of the area consists of volcanic-pyroclastic and lava units (andesite, latite andesite, andesite basalt and tuff) of Eocene age, and a subvolcanic body of late-Eocene (Oligocene?) which has intruded into...

Yamaghan copper deposit occurs in the Eocene volcanic-pyroclastic sequence of NE-SW orientation, 55 km southeast Zanjan in the Tarom volcano-plutonic subzone of the western Alborz structural zone. Lithologic units at the deposit consist of pyroclastic rocks and lava. The host rock to the deposit is a trachy-andesite unit with megaporphyritic and am...

Whole-rock geochemical and Sr–Nd isotopic data are presented for late Miocene volcanic rocks associated with the Chah Zard epithermal Au-Ag deposit in the Urumieh-Dokhtar Magmatic Arc (UDMA), Iran, to investigate the magma source, petrogenesis and the geodynamic evolution of the study area. The Chah Zard andesitic to rhyolitic volcanic rocks are ch...

This research paper aims to delineate and recognize different gold mineralization stages based on surface lithogeochemical data using factor analysis and Spectrum-Area (S-A) modeling, as well as geological data in Arabshah sedimentary rock hosted epithermal gold deposit, NW Iran. Based on the factor analysis, Au and Mn were allocated to factor 2 (F...

Arabshah gold deposit formed through hydrothermal activity with an age of ~11 Ma (based on zircon U-Pb dating by LA-ICP-MS), at northwestern Iran. This hydrothermal activity is a part of the Urumieh-Dokhtar magmatic arc (UDMA), leading to mineralization in this area, similar to Zarshouran, Aghdarreh and Sarigunay gold deposits. Host rocks are a ser...

The Khunik prospecting area is located 106 km south of Birjand in eastern Iran. This mineralization is related to calc-alkaline magmatism of middle Eocene age and is related to subduction. Mineralization outcrops in the subvolcanic rocks and the hydrothermal breccia and is related to subvolcanic units with an age of 38.4 Ma. The result of fluid inc...

Whole-rock geochemical and Sr-Nd isotopic data are presented for late Miocene (6.2 ± 0.2 Ma) volcanic rocks associated with the Chah Zard epithermal Au-Ag deposit in the Urumieh-Dokhtar Magmatic Arc (UDMA), Iran, to investigate the magma source, petrogenesis and the geodynamic evolution of the study area. The Chah Zard andesitic to rhyolitic rocks...

The Chah-Firouzeh deposit with about 100 Mt ore reserves @ 0.5% Cu is a small porphyry copper deposit located 14 km west of the Meiduk deposit in the northern section of the Kerman Cenozoic Magmatic Assemblage (KCMA), southeastern Iran. The mineralization is associated with a porphyry quartz-monzodiorite to quartz-diorite stock, which intruded into...

The Takht-e-Gonbad, or simply Takht, copper deposit in the Kerman belt in southern section of the Cenozoic Urumieh-Dokhtar magmatic arc (UDMA) of Iran is spatially associated with late Oligocene shallow granodiorite porphyries intruded into pyroclastic rocks. Hypogene ore minerals include pyrite, chalcopyrite, magnetite and rare molybdenite and bor...

Base metal (Cu-Pb-Zn) mineralization occurred at the Golijeh deposit within the host volcanic and subvolcanic rocks of the Eocene - Oligocene (equivalent to Karaj Formation) in the Tarom subzone of western Alborz. Basic to intermediate volcanic, volcano-clastic and subvolcanic rocks including andesite, hornblende andesite, microgabbro and tuffs are...

Gold mineralization at Chah Zard, Iran, is mostly concentrated in breccia and veins, and is closely associated with pyrite. Optical and scanning electron microscopy-backscattered electron observations indicate four different pyrite types, each characterized by different textures: porous and fractured py1, simple-zoned, oscillatory-rimmed, framboida...

The Some-Ahani and Ferezneh prospect areas are two of the eastern anomalies ofKhaf’s Sangan iron mine in Khorasan Razavi province. Biotite monzonite porphyry andbiotite syenogranite Tertiary plutons occurred in the area of study. Due to the severe alteration of biotite monzonite porphyry intrusion, geochemical studies have beenfocused on the biotit...

Dehoo manganese deposit is located 52 km to the south of Zahedan in Sistan and Baluchestan Province, southeastern Iran. This deposit that lies in the central part of the Iranian Flysch Zone is lenticular in shape and lies above the micritic limestone-radiolarite cherts of the upper Cretaceous ophiolite unit. It is hosted within the reddish to brown...

Qare-Naz area located in Zanjan province and is part of Sanandaj-Sirjan metamorphic zone (SSZ). Its major lithological units include genissie, amphibolite and quartz-micachiste with marmaritc thich bands related to lower parts of Gheble-Dagh metamorphic complex. Stream sampling done in order to mineralize anomalies identification and heavy mineral...

Kahak copper mineralization in south Qom occurred in volcanic-pyroclastic rocks which based on the Kahak 1:100,000 geological map are attributed to Eocene. Volcanic rocks of the study area are found in two forms of lava and pyroclastics. Based on geochemical studies, these rocks show alkaline to calc-alkaline characteristics in an arc extensional s...

Golijeh Cu-Pb-Zn deposit is located 30 km northeast of Zanjan in Tarom subzone, Western Alborz-Azerbaijan zone. Igneous rocks in the area consist of a series of Eocene volcanic and subvolcanic rocks which mainly include crystal lithic tuff, sandy tuff and andesitic lava. Intrusion of subvolcanic bodies of Oligocene (?) age into the Eocene volcanicl...

The Sangan mining region is the largest Fe skarn in western Asia has emplaced into the Khaf-Kashmar-Bardaskan volcano-plutonic belt in the NE Iran. In this region, carbonate rocks of Jurassic skarnified and hosted different epigenetic types of iron minerals, including magnetite, hematite, goethite, and limonite. The combination of remote sensing an...

The Khunik area is located in the south of Birjand, Khorasan province, in the eastern margin of Lut block. Tertiary volcanic rocks have andesite to trachy-andesite composition. Dating analyzing by Rb-Sr method on plagioclase and hornblende as well as whole-rock isochron method was performed on pyroxene-hornblende andesite rock unit. On this basis t...

The Gazestan magnetite–apatite deposit is located 78 km east of Bafq, in the Bafq-Poshtebadam subzone of the Central Iran structural zone.The rock units in the area belong to the Rizou series and consist of carbonate rocks, shale, tuff, sandstone and volcanic rocks. Intrusive rocks in the form of stock and dyke crop out as granodiorite and granite...

The metamorphic-magmatic Sanandaj-Sirjan Zone (SSZ) and Urumieh-Dokhtar Magmatic Belt (UDMB) are the most important gold metallogenic provinces of Iran, occurring as two NW-SE parallel tectono-magmatic zones in the inner parts of Zagros orogeny, a part of the Alpine-Himalayan orogenic belt. In an orogenic system such as the one which has occurred i...

The North Narbaghi epithermal Ag-Cu deposit is located in the central part of the Urumieh-Dokhtar Magmatic Arc (UDMA) of Iran. Regional tectonic reconstruction for late Mesozoic-Tertiary indicates that the North Narbaghi epithermal deposit formed as a result of subduction of Neotethyan oceanic crust beneath central Iranian block. Ag-Cu mineralizati...

The Senjedak-I prospect area is one of the six eastern anomalies of Sangan iron mine. Geologic units in the area consist of Jurassic shales and sandstones, skarn rocks and Tertiary biotite monzonite and biotite syenogranite intrusive rocks. Due to the severe alteration of biotite monzonite porphyry intrusive, geochemical studies have focused on the...

Tarom plutonic complex is located in northeast of Zanjan and in the Alborz-Azerbaijan zone with northwest-southeast trending. The Eocene Tarom plutons include Zanjan (quartz monzodiorite), Zaker (quartz monzonite), Morvarid (monzogranite to syenogranite) and Kuh Tabar (porphyry microquartz diorite) which intruded within the volcanic and volcanoclas...