Abdrorrahman Rajabi

• Ph.D.
• Professor (Assistant) at University of Tehran

The Kuh-e Janja porphyry Cu-Au deposit is located 60 km southeast of Nehbandan in southern Iran, within the northern part of the Sistan Suture Zone. Several distinct stockwork vein types are recognized, differing in morphology, vein mineralogy, and associated alteration type. Early biotite (EB) veins containing biotite and minor amounts of quartz,...

This study aims to improve the efficiency of mineral exploration by intro-ducing a novel application of Deep Convolutional Generative Adversarial Networks (DCGANs) to augment geological evidence layers. By training a DCGAN model with existing geological, geochemical, and remote sensing data, we have synthesized new, plausible layers of evidence tha...

Iran hosts more than 350 Precambrian to Cenozoic sediment-hosted Zn-Pb±Ba and barite-sulfide deposits, including shale-hosted massive sulfide (SHMS, also called SEDEX) and Irish-type and Mississippi Valley-type (MVT) mineralization, and barite is a common mineral in these deposits. In the SHMS deposits, barite is typically found as fine-grained dis...

The origins of magnetite-apatite deposits are controversial, and the crux of the debate is what types of fluids form these rocks. We present evidence from 20 magnetite-apatite deposits worldwide showing ubiquitous involvement of molten salts. The studied deposits are distributed globally, from various tectonic settings, and from Precambrian to Quat...

Framboidal pyrite is common in marine sediments and organic matter-bearing sedimentary rocks. It has also been reported in many ‘sediment-hosted ore deposits’, such as shale-hosted massive sulfide (SHMS) or clastic-dominated Zn-Pb deposits, volcanogenic massive sulfides (VMS), Irish-type Zn-Pb, sediment-hosted stratabound copper (SSC), and sandston...

The Eastern Haft-Savaran Zn-Pb-(Ba) deposit, located in the southeastern part of the Arak Mining District of the Malayer-Esfahan Metallogenic Belt, Iran, is hosted in the uppermost part of an early Cretaceous massive limestone unit that is capped by shale. The mineralization has a sheet-like geometry and is associated with intense dolomitization an...

The Mehdiabad deposit in the Yazd-Anarak metallogenic belt (YAMB), central Iran, is the largest car-bonate-hosted Zn-Pb-Ba-Cu (-Ag) deposit in the world, with a reserve of 630 Mt sulphide and non-sulphide ore. It was formed during the Early Cretaceous by the replacement of barite and hydrothermally dolomitized breccia bodies of the Taft and Abkuh f...

Irish-type zinc-lead deposits in Early Cretaceous carbonate rocks of Iran

Early Cretaceous carbonates are the most common host rocks for Irish-type deposits in Iran. They are largely concentrated in the Malayer-Esfahan metallogenic belt (MEMB) in southwestern Iran, and Yazd-Anarak metallogenic belt in Central Iran. They include some world‐class ore deposits such as Mehdiabad, Irankuh, and Ahangaran. These stratabound dep...

Red Bed type sediment-hosted stratabound copper (SSC) deposits consist of replaced, disseminated to veinlets copper sulfides, hosted by thick, hematite-stained sequences of sandstone, conglomerate, and siltstone. More than 120 sediment-hosted stratabound copper (SSC) deposits and occurrences have been reported in Iran. Ravar-Tabas-Eshghabad is the...

Zarnan-Chorehnab iron deposits are located at 5 km northeast of Zanjan city in the Tarom mountains, between Zarnan and Chorehnab villages. Mineralogical studies, as well as field observations show that iron mineralization is mostly magnetite type. However, hematite and goethite minerals are also formed to a lesser extent due to weathering and alter...

Structural control is an important factor in the concentration of ore minerals in sediment-hosted zinc-lead (SH Zn-Pb) deposits, which remains a crucial point that is frequently absent in scientific and/or exploratory studies. So far, more than 350 SH Zn-Pb deposits have been reported in Iran, most of them are concentrated in the Malayer-Esfahan, Y...

Based essentially on genetic type and rock association, sediment-hosted (SH) Zn-Pb deposits of Iran can be classified into shale-hosted massive sulfide (SHMS), Irish-type and orogenic-related Mississippi Valley-type (MVT) deposits that are concentrated in the Tabas-Posht e Badam, Central Alborz, Malayer-Esfahan and Yazd-Anarak metallogenic belts. T...

Iran is one of the most significant producers of copper in the world and hosts varieties of copper deposits, including porphyry Cu-Mo, vein-type, volcanogenic massive sulfide (VMS), sediment-hosted stratabound copper (SSC), Manto-type, and skarn. Manto-type deposits are the second producer of copper in Iran, mostly hosted in basalt, basalt-andesite...

Metallogeny is the study of the ore-forming process at a regional and global scale, emphasizing their relationship in space and time to geological events and tectonic features of the Earth's crust. Although the study of deposits individually provides us valuable information about the processes affecting the formation of ores, studying the metallog...

The Ab‐Bid deposit, located in the Tabas‐Posht e Badam metallogenic belt (TPMB) in Cen‐ tral Iran, is the largest Pb‐Zn (±Cu) deposit in the Behabad‐Kuhbanan mining district. Sulfide min‐ eralization in the Ab‐Bid deposit formed in Middle Triassic carbonate rocks and contains galena and sphalerite with minor pyrite, chalcopyrite, chalcocite, and ba...

The Pathé geothermal zone, in the eastern portion of the Trans-Mexican Volcanic Belt, attracted a variety of scientists and explorers since late 18th century. Joseph Burkart (1798-1870), a German mining engineer disciple of Alexander von Humboldt (1769-1859), provided in 1836 elaborated geological descriptions of the zone; for these early reports,...

Recent geological exploration in the Zahedan Nehbandan magmatic belt has led to the recognition of new deposits of porphyry copper deposits. So, recognition of intrusive rocks characterization is necessary for future exploration. This study presents geochemical compositions for Miocene Kuh-e Janja intrusive rocks situated in southeastern Iran, nort...

The Montaña de Manganeso is a manganese vein-type deposit spatially associated with back-arc basin remnants of the Guerrero tectonostratigraphic terrane. The study of major- and trace-element geochemical characteristics of the deposit provides insight into the controls on ore-forming processes within the area. The deposit is characterized by low Co...

The genetic model, including conditions under which mineralization formed, and relative timing of mineralization are critical questions for SEDEX deposits. There is increasing awareness that sub-seafloor replacement is an important process in the formation of some SEDEX deposits. We have studied the Hossein-Abad and Western Haft-Savaran Zn-Pb SEDEX...

The Late Cretaceous to Eocene Sistan suture zone in southeastern Iran separates the Lut continental block in the west from the Afghan continental block in the east. A major belt of Oligocene to Miocene igneous rocks occurs between the cities of Zahedan and Nehbandan, stretching for ~200 km from south to north parallel to the border with Pakistan an...

Semirom fireclay mine is located in Isfahan province, southwest of Semirom city and near Poshteh village. This deposit with sedimentary origin of Upper Cretaceous age is located between Ilam and Sarvak formations in the Zagros structural zone. The main minerals of this deposit identified by XRD method are: illite, kaolinite, montmorillonite, goethi...

Iran is a resource able country and hosts a variety of ore deposits that have been, are, or have potential to be mined. These deposit types include porphyry Cu and Cu-Mo-Au, skarn, vein-type, volcanogenic massive sulfide (VMS), Manto-and etc. However, the porphyry and epithermal deposits of Iran have better known in the Urumieh–Dokhtar Magmatic Arc...

The Velardeña mining district is economically the most important of Durango state. The ore deposits occur in different skarn zones developed within the intrusive contact between Mesozoic limestones and Eocene granitic stocks and dikes. The most important ore deposits are related to the Santa María dike and Reyna de Cobre porphyritic stock (separate...

Manganese mineralization at Montaña de Manganeso, San Luis Potosí state, consists of oxide ores that form sharp contacts with volcanic host rocks. The orebodies are generally in the form of veins and irregular masses, and locally as mineralized breccias. Petrographic analyses indicate that the mineralization is multi-episodic, with colloform and cr...

The Koushk Zn-Pb deposit is the largest known and least deformed and non-metamorphosed Early Cambrian shale-hosted massive sulfide (SHMS) deposit at Central Iran. The current remaining reserves are estimated to be greater than 14 Mt ore, averaging 7% Zn and 1.5% Pb; the primary resources ore of the deposit is estimated to be more than 60 Mt. At thi...

Geographic Information System Lesson 1 - Georeferencing University of Tehran (Video lesson - Language: Persian)

The Velardeña mining district is economically the most important of Durango state. The ore deposits occur in different skarn zones developed within the intrusive contact between Mesozoic limestones and Eocene granitic stocks and dikes. The most important ore deposits are related to the Santa María dike and Reyna de Cobre porphyritic stock (separate...

کمربند فلززایی ملایر-اصفهان در پهنه ساختاری سنندج-سیرجان، میزبان کانسارهای متعدد (بیش از 170 کانسار) روی-سرب (و باریت)، کانسارهای باریت (و سرب و روی) و کانسارهای سیدریتی آهن-منگنز-سرب (± مس و باریم) با سنگ درون‌گیر رسوبی و رسوبی-آتشفشانی می‌باشد. این کانسارها اغلب در شیل و ماسه‌سنگ‌های ژوراسیک میانی تا فوقانی، سنگ‌های کربناته و سیلتستون (همراه با م...

The Malayer-Esfahan metallogenic belt (MEMB) in the Sanandaj-Sirjan zone hosts numerous Zn-Pb (±Fe ± Ag ± Cu) and barite deposits in Early Cretaceous carbonate rocks (associated with siltstone and minor volcanic rocks), such as Irankuh, Emarat, Muchan, Lakan, Anjireh-Tiran, Robat and Haft-Savaran Zn-Pb-Ba deposits and Ahangaran, Shamsabad and Sarch...

The Robat Zn-Pb-Ba deposit in the Arak mining district in the Malayer-Esfahan metallogenic belt (MEMB) has an estimated reserve of 5 million tonnes (Mt) ore grading 2.1 wt% Zn and 1.4 wt% Pb and 4 Mt barite ore. This deposit, hosted by Early Cretaceous carbonate rocks, formed in an extensional back-arc environment between the Sanandaj-Sirjan Zone a...

The Malayer-Esfahan Metallogenic belt (MEMB), in the southwestern Iran, contains numerous different types of the sediment-hosted Zn-Pb (±Ba±Ag), volcanic-sediment hosted Zn-Pb ± Ba, sideritic Fe-Mn-Pb (±Ba±Cu), and barite mineralizations. These deposits are hosted mostly in Jurassic shales and sandstones and in Early to Late Cretaceous carbonates a...

The Ab-Bagh Zn-Pb deposit is located in the central part of the Sanandaj-Sirjan zone (SSZ) and southeastern corner of the Malayer-Esfahan metallogenic. Based on stratigraphic position, two ore horizons can be distinguished which are hosted in the Upper Jurassic-lower Cretaceous sedimentary sequence. Due to alternating pulses of hydrothermal fluid (...

Abstract The Nohkuhi copper deposit located at 40 Km Northwest of Kerman, occurred in the Central Iran structural zone (Posht-e- Badam block), within Late Precambrian-Early Cambrian volcano-sedimentary sequence. Host sequence of mineralization consists of dominantly black shale, sandstone and dacitic lava of Rizu Series. Mineralization occurred as...

The occurrence of framboidal pyrite is common in marine sediments, organic matter-bearing sedimentary rocks, and it has also been reported from many sedimentary ore deposits, e.g. sedimentary-exhalative (SEDEX, and sub-seafloor replacement SEDEX), volcanogenic massive sulfide (VMS), Irish, and sediment-hosted copper, but they are absent in some oth...

The Ab-Bagh Zn-Pb deposit is located in the southeastern part of Malayer-Esfahan metallogenic belt. This deposit is hosted in Upper Jurassic-Lower Cretaceous sedimentary sequence; zinc and lead mineralization occurred within two horizons. The ore horizon 1 is hosted by Late Jurassic-Early Cretaceous black shale and siltstone. The ore body displays...

The Arak basin in the northern part of the Malayer-Esfahan metallogenic belt (MEMB) of Iran hosts 9 Zn-Pb sulfide deposits within a Jurassic sedimentary succession of black, fine-grained sandstone, siltstone and shale. This succession was deposited in an extensional back-arc environment between the Sanandaj- Sirjan Zone (SSZ) and the Central Irania...

Abstract: The Nohkuhi copper deposit located at 40 Km Northwest of Kerman, occurred in the Central Iran structural zone (Posht-e- Badam block), within Late Precambrian-Early Cambrian volcano-sedimentary sequence. The host rocks consist of dominantly black shale and dacitic lava of Rizu Series. Generaly, the study area consist of three copper- and t...

The numerous non-sulfide zinc ore deposits were the historical basis for the development of zinc mining in Iran. They include the Mehdiabad, Irankouh and Angouran world-class deposits, as well as the Zarigan and Haft-har deposits. These deposits were formed by supergene oxidation of primary sulfide minerals during the complex interplay of tectonic...

The Early Cretaceous Eastern Haft-Savaran Zn-Pb (Ba) deposit situated in the Arak mining district and occurred within the extentional back-arc of Malayer-Esfahan basin. Mineralization occurred in two horizons in the Estern Haft-Savaran deposit. First horizon is major horizon that formed within the most upper portion of the massive limestone and sec...

The Nohkuhi copper deposit, located at 40 Km Northwest of Kerman, occurred in the Central Iran structural zone (Posht-e- Badam block), within Late Precambrian to Early Cambrian volcano-sedimentary sequence. The host rocks consist of dominantly black shale and dacitic lava related to Rizu Series. based on Studies textural, structural, mineralogical...

The Kouh-Kolangeh carbonate-hosted Zn-Pb-Ba deposit is hosted by Lower Cretaceous detrital-carbonate sequence in the central part of the Malayer-Isfahan metallogenic belt (MEMB) and has been formed within an extensional basin. Ore mineralization occurred as concordant with layering in the upper part of non- argillic massive Orbitolina gray limeston...

The Ab-Bagh Zn-Pb deposit is located in the central part of the Sanandaj-Sirjan zone (SSZ) and in the southeastern part of Malayer-Esfahan metallogenic belt. This deposit is hosted in Upper Jurassic-Lower Cretaceous sedimentary sequence; zinc and lead mineralization occurred within two horizons. The ore horizon 1 is hosted by Late Jurassic-Early Cr...

The Ab-Bagh Zn-Pb deposit is located in the central part of the Sanandaj-Sirjan zone (SSZ), Iran and is hosted in the Upper Jurassic-lower Cretaceous sedimentary sequence. Mineralization occurs during the back-arc rifting of the continental margin of the SSZ. Based on stratigraphic position, two ore horizons can be distinguished. The vent-proximal...

Darreh-zanjir Zn-Pb deposit is located in the south of Taft city. Sulfide minerals in this deposit include sphalerite, galena and pyrite. Replacement, opene space filling, vein-veinlet, breccia and massive are the typical textures in the Darreh-zanjir deposite. Mineralization formed in the normal fault. Gange mineral is dolomite and dolomitization...

The Ab-Bagh Zn-Pb deposit is located in the central part of the Sanandaj-Sirjan zone (SSZ), Iran and is hosted in the Upper Jurassic-lower Cretaceous sedimentary sequence. This deposit contains approximately 2 Mt grading at 5.41 % Zn+Pb. The mineralization during the back-arc rifting of the continental margin of SSZ. The Upper Jurassic-Lower cretac...

The early Cretaceous sedimentary sequence in south of Yazd hosts numerous Zn-Pb-Ba mineralizations. The sequence based on the stratigraphic position, age and composition of the rocks, can be divided into tree lower, middle and upper parts. The lower part or Sangestan formation mainly formed from clastic sediments for examples, conglomerate, sandsto...

The Tiran mining district in the southern part of the Malayer-Esfahan metallogenic belt (MEMB), Iran, contains numerous shale-hosted Zn-Pb (±Ag ±Cu) sulfide deposits in black limey siltstone and carbonate rocks of the Early Cretaceous sedimentary sequence. This sequence deposited in an extensional back-arc environment between the Sanandaj-Sirjan Zo...

South Shahreza basin located in the most southeastern corner of the Malayer-Esfahan metallogenic belt. Zinc and lead mineralization occurred in two ore horizons at extensional back-arc basin. Ore horizon 1 hosted upper Jurassic-lower Cretaceous detrital-carbonate (includes black organic matter rich shale, siltstone and limestone) and ore horizon 2...

A boiling model that considers the increase of salinity due to the steam loss and uses a combined density of the coexisting vapor and liquid phases was applied to fluid inclusion data from Los Azufres geothermal zone and froman Eocene epithermal vein of Taxco. These case studies are taken as examples of active and fossil hydrothermal systems, respe...

Previous depth estimations for ore forming fluids in boiling conditions do not consider salinity increase nor vapor bubble effect on the water column. • Such estimations show unreliable values for depth that vary between 15-50 % when compared to real ones. • We applied a model of boiling to an active and fossil hydrothermal system. The results sugg...

A boiling model that considers the increase of salinity due to the steam loss and uses a combined density of the coexisting vapor and liquid phases was applied to fluid inclusion data from Los Azufres geothermal zone and from an Eocene epithermal vein of Taxco. These case studies are taken as examples of active and fossil hydrothermal systems, resp...

The Tiran area is one of productive Zn-Pb basins that hosted by Early Cretaceous sedimentary rocks in southeastern Malayer-Esfahan metallogenic belt (MEMB) of Iran. Remote sensing techniques play a major role in preparation of base maps with different geological information. The purpose of this research is the application of spectral image processi...

The Ab-Bagh Zn-Pb deposit is located in the southeastern part of the Malayer-Esfahan metallogenic belt, south of Shahreza, Iran, and is hosted by a sequence of Late Jurassic-Early Cretaceous detrital-carbonate rocks belonging to the Sanandaj-Sirjan structural zone (SSZ). Based on relationships between ore and host rocks, mineralogical associations...

A boiling model that considers the increase of salinity due to the steam loss and uses a combined density of the coexisting vapor and liquid phases was applied to fluid inclusion data from Los Azufres geothermal zone and from an Eocene epithermal vein of Taxco. These case studies are taken as examples of active and fossil hydrothermal systems, resp...

Unpublished report. 20 pp

Unpublished explanatory text

Haft-Savaran Zn-Pb ore deposit has occurred within Lower Jurassic silty and sandstone-type units of south of Arak basin in the Malayer- Esfehan metallogenic belt. Sulfide mineralization is composed of three ore facies in this ore deposit; stockwork (feeder zone), massive and bedded ore types. Stockwork ore facies underlying by massive ore facies an...

The Ab-Bagh Zn-Pb deposit is situated in the southeastern part of the Malayer-Esfahan metallogenic belt, south of Shareza, and is hosted by a sequence of Upper Jurassic-Lower Cretaceous detrital and carbonate rocks. Based on crosscuting relationships, mineralogy, textures and ore facies, two different ore zones can be distinguished in this deposit:...

The Zarigan–Chahmir basin is placed in the southern part of a crustal domain known as the Central Iranian microcontinent, at the northwestern margin of Gondwana. This basin hosts abundant mineral deposits, particularly of the iron oxide–apatite (IOA), Fe–Mn exhalative, and Zn–Pb sedimentary-exhalative (SEDEX) types. The evolution of this basin is g...

Ab-Bagh deposit located in the most Southeast part of Malayer-Esfahan metallogenic belt, central part of Sanandaj-Sirjan zone. In Ab-Bagh deposit zinc and lead mineralization occurred in two zones. On the bottom, upper Jurassic and lower Cretaceous Clastic-carbonate rocks host for zinc-lead(Barite) mineralization. Available textures are: Massive, B...

The Chahmir zinc–lead deposit (1.5 Mt @ 6 % Zn + 2 % Pb) in Central Iran is one among several sedimentary-exhalative Zn–Pb deposits in the Early Cambrian Zarigan–Chahmir basin (e.g., Koushk, Darreh-Dehu, and Zarigan). The deposit is hosted by carbonaceous, fine-grained black siltstones, and shales interlayered with volcaniclastic sandstone beds. It...

There are more than 300 sediment-hosted Zn–Pb deposits and occurrences in Iran and most of them occur within carbonate rocks, including world-class deposits such as Mehdiabad, Irankuh and Angouran. To achieve a broad metallogenetic framework for carbonate-hosted (CH) Zn–Pb resources in Iran, we developed a GIS database with all reported deposits an...

The Mazatán barite deposits, Sonora, NW Mexico, represent an outstanding example of Paleozoic bedded barite, a poorly understood type of mineral deposit of major economic interest. The deposits of this type commonly occur hosted by shales and are characterized by the lack of base-metal sulfide mineralization, in contrast to classic sedimentary-exha...

There are more than 300 sediment-hosted Zn–Pb deposits and occurrences in Iran and most of them occur within carbonate rocks, including world-class deposits such as Mehdiabad, Irankuh and Angouran. To achieve a broad metallogenetic framework for carbonate-hosted (CH) Zn–Pb resources in Iran, we developed a GIS database with all reported deposits an...

The Koushk zinc–lead deposit in the central part of the Zarigan–Chahmir basin, central Iran, is the largest of several sedimentary–exhalative (SEDEX) deposits in this basin, including the Chahmir, Zarigan, and Darreh-Dehu deposits. The host-rock sequence consists of carbonaceous, fine-grained black siltstone with interlayered rhyolitic tuffs. It co...

More than 285 carbonate-hosted Zn–Pb deposits occur in Iran, including world-class deposits such as Mehdiabad and Irankuh. Cretaceous carbonates are the most common host rock for these deposits, which are largely concentrated in the Malayer-Esfahan metallogenic belt (MEMB) and the Yazd-Anarak metallogenic belt (YAMB) and, to a lesser extent, in the...

More than 285 carbonate-hosted Zn–Pb deposits occur in Iran, including world-class deposits such as Mehdiabad and Irankuh. Cretaceous carbonates are the most common host rock for these deposits, which are largely concentrated in the Malayer-Esfahan metallogenic belt (MEMB) and the Yazd-Anarak metallogenic belt (YAMB) and, to a lesser extent, in the...

More than 285 carbonate-hosted Zn–Pb deposits occur in Iran, including world-class deposits such as Mehdiabad and Irankuh. Cretaceous carbonates are the most common host rock for these deposits, which are largely concentrated in the Malayer-Esfahan metallogenic belt (MEMB) and the Yazd-Anarak metallogenic belt (YAMB) and, to a lesser extent, in the...

See the Full text. (In Persian)

The Chahmir zinc-lead deposit, located in the southeast of the Bafq basin, Central Iran, is one of several sediment hosted Zn-Pb SEDEX deposits (e.g., Koushk, Zarigan and Dareh Dehu deposits) hosted within a Lower Cambrian volcano-sedimentary sequence. The Bafq basin consists of a series of horsts and grabens along N-S trending faults produced by i...