Volume 33 (2023)
Volume 32 (2022)
Volume 31 (2021)
Volume 30 (2020)
Volume 29 (2020)
Volume 28 (2019)
Volume 27 (2018)
Volume 26 (2017)
Volume 25 (2016)
Volume 24 (2015)
Volume 23 (2014)
Volume 22 (2013)
Volume 21 (2012)
Volume 20 (2011)
Volume 19 (2010)
Volume 18 (2009)
Volume 17 (2008)
Volume 16 (2007)
Investigating the U-Pb zircon data according to the mineral chemistry, Boneh-shurow metamorphic complex, Saghand, Central Iran

Leila Maleki; Nematollah Rashid Nejad-e-Omran; Abdolrahim Houshmandzadeh; John Cottle

Volume 33, Issue 2 , June 2023, , Pages 155-168


  In this article, metabasic and gneissic rocks of Gelmandeh and Zamanabad mountain (Boneh-Shurow complex, Saghand region) have been used for U-Pb dating. Analyses of zircon crystals yielded concordant U–Pb ages with weighted mean 206Pb/238U ages of 545.4 ±3.6 Ma (MSDW=1.7) for garnet amphibolite, ...  Read More

Economic Geology
Mineralization, Fluid inclusion, and stable isotope studies (O, S) of the Godar Sorkh gold deposit, Muteh, Sanandaj-Sirjan

Monireh Sakhdari; Mehrdad Behzadi; Mohammad Yazdi; Nematollah Rashidnejad-Omran; Morteza Sadeghi Naeini

Volume 32, Issue 3 , September 2022, , Pages 49-60


  The Godar Sorkh area is located in the central part of the Sanandaj-Sirjan zone, 20 km southwest of the Muteh region. Gold mineralization at Godar Sorkh occurs in quartz-sulfide veins that hosted in metasedimentary rocks. Veins of mineralization typically formed along normal faults.  Rock sequences ...  Read More

Geochemistry and origin of the ortho- amphibolites inTakhte-Soleyman (NE Takab)

Ziba Khodaean Chegeni; Nematollah Rashidnejad Omran; Ali Akbar Baharifar; Reza Nozaem; Carmela Vaccaro; José Francisco Santos

Volume 32, Issue 2 , July 2022, , Pages 133-148


  Takhte-Soleyman ortho-amphibolites as a part of Takab metamorphic complex are located in Northeast Takab. These rocks consist of amphibolite, Garnet-amphibolite, Kyanite-Garnet-amphibolite, Hornblendite and Epidote-amphibolite. Petrography and whole- rock geochemistry show that basalt, andesite and/or ...  Read More

Petrology, geochemistry and Sr-Nd isotopic composition of the metabasic rocks of Boneh shurow metamorphic complex, East of Saghand, Central Iran

Leila Maleki; Nematollah Rashidnejad Omran; Abdolrahim Houshmandzadeh

Volume 29, Issue 114 , December 2019, , Pages 185-196


  Boneh shurow metamorphic complex is located in the east of Saghand area, Central Iran. This complex consists of quartz-feldspatic gneiss (mafic minerals < 5%), biotite-amphibole gneisses, metabasics rocks, schists, subordinate dolomitic marble and quartzite interlayers and mafic and felsic magmatic ...  Read More

Geochemistry, geodynamic setting and probable origin of orthogneiss in Belqeis Mountain (NW of Iran)

H. Rahbari; N. A. Rashidnejad Omran; M. Khalatbari-Jafari

Volume 27, Issue 106 , March 2018, , Pages 77-88


  As a part of Takab Metamorphic Complex (TMC), Belqeis Mountain has a variety of ‎metamorphic rocks including orthogneiss, pelitic schists, meta-‎ultramafics and mafic rocks and dolomitic marbles. This complex was metamorphosed, faulted and folded ‎during Late Neoproterozoic-Early Cambrian ...  Read More

Petrology, geochemistry and geochronology of Nodoushan intrusive complex, West of Yazd

B. Shahsavari Alavijeh; N. Rashidnejad Omran; J. Ghalamghash

Volume 27, Issue 105 , December 2017, , Pages 215-232


  The Nodoushan intrusive complex is a part of Cenozoic plutonism, which located in the central part of the Urumieh–Dokhtar Magmatic Belt (UDMB). This complex consists of four main intrusives, including diorite, granite-granodiorite, diorite porphyry and granodiorite. Mafic microgranular enclaves ...  Read More

Epithermal Base Metal - Silver Mineralization at Gomish-Tappeh Deposit, Southwest of Zanjan

T Salehi; M Ghaderi; N Rashidnejad-Omran

Volume 25, Issue 97 , December 2016, , Pages 329-346


  Gomish-Tappeh Zn-Pb-Cu (Ag) deposit is located in northwestern part of Urumieh-Dokhtar volcano-plutonic zone, 90 km southwest of Zanjan. Exposed rocks at the area include Oligo-Miocene volcano-sedimentary and sedimentary sequences as well as Pliocene dacitic subvolcanic dome, rhyodacitic volcanics and ...  Read More

Investigation of methods the assessment of critical and strategic minerals and elements, with a special focus on geoeconomics of fluorspar in Iran

S. M Masoudi; E Ezati; N Rashidnejad Omran

Volume 25, Issue 100 , September 2016, , Pages 121-130


  Before the Cold War, strategic materials supply and studies related to them were more affected by military ‎‎competition between East and West, the example was the assessment of the geopolitical risk factors by ‎Anderson for the North Atlantic ‎Treaty Organization. But after the Cold ...  Read More

Evaluate geochemical trace elements of Qalikuh oil shale (Southwest Aligoodarz) using elemental analysis and rock eval pyrolysis

M Fereidoni; M Lotfi; N Rashid nejad; M Rashidi

Volume 25, Issue 98 , March 2016, , Pages 171-180


  The Qalikuh area,~35 km southwest of Aliqudarz, contains oil shale deposits in Garue and Sargelu formations(Jurassic-Cretaceous). Some 20 samples across two sections(Charun3-Deh ye Qali3) were selected and analyzed(Rock Eval – ICP – XRD – XRF) to study organic and mineral parameters(to ...  Read More

Determining the Origin of Mineralizing Fluid at Qamsar Cobalt Deposit Using Fluid Inclusions and S-O Stable Isotopes

H Mohammaddoost; M Ghaderi; N Rashidnejad-Omran

Volume 24, Issue 96 , September 2015, , Pages 235-248


  Qamsar cobalt deposit is located 26 km south of Kashan, in the middle part of Urumieh-Dokhtar magmatic arc. Exposed rock units in the area include Eocene volcanics, Qom Formation marine sediments and plutonic bodies. The intrusive bodies have quartz-diorite to granodiorite composition as well as porphyry ...  Read More

Manto-Type Copper Mineralization in Pyrobitumen-Bearing Porphyritic Andesite, Koshkoiye District of Rafsanjan, Dehaj-Sardoiye Subzone

M Abolipour; E Rastad; N Rashidnejad Omran

Volume 24, Issue 95 , June 2015, , Pages 123-144


  The Koshkoiye district is located in Dehaj-Sardoiye subzone of Uromieh-Dokhtar Magmatic Arc in Kerman region. There are five active mines including Palangi, Cheshmeh Khezr, Tale Dozi, Abedini, and Eghbali. The geometry of mineralization is strata-bound and hosted in the Eocene Pyrobitumen-bearing porphyritic ...  Read More

Southern Chah Palang W (Cu-Au) Mineralization: Mineralogy, Fabric and Texture: Geochemistry and Isotopic Data

S Ghaderi; E Rastad; N Rashidnezhad-Omran

Volume 24, Issue 95 , June 2015, , Pages 271-286


  Tungsten (Cu-Au) mineralization of Southern Chah Palang (SCP) deposit, located in middle part of the Yazd block, occurred as vein-veinlet in normal fault zones, which cut the sandstones and shales of Early-Middle Jurassic Shemshak formation. Based on the mineral paragenesis and quartz type, color and ...  Read More

Mineralization Stages and Iron Source of Bashkand Deposit Based on Mineralogy, Structure, Texture and Geochemical Evidence, Southwest of Soltanieh

S Shahbazi; M Ghaderi; N Rashidnejad-Omran

Volume 24, Issue 95 , June 2015, , Pages 355-372


  The Bashkand iron deposit is located in 16 km southwest of Soltanieh, in Central Iran Structural Zone. The rock units in the area include alternations of metamorphosed sedimentary rocks of the Kahar Formation, Khorramdarreh granite and an andesitic dike. The major alteration types are argillic, potassic, ...  Read More

Petrology and U-Pb Zircon Dating of Marfion Intrusive Complex, West of Kashan

M Honarmand; N Rashidnejad Omran; M.H Emami; Gh Nabatian

Volume 24, Issue 94 , March 2015, , Pages 3-16


  The Marfion Granitoid Complex is a part of Cenozoic plutonism, which located in the central part of the Urumieh–Dokhtar Magmatic Belt. This complex consists of four main intrusives,  including the Mozvash micro-dioritic to micro-monzodioritic intrusive, which scattered as separate outcrops ...  Read More

Separation and Classification of Veins Based on Au Grades by Using Concentration-Volume (C-V) Fractal Model in Qoloqoleh Gold Deposit, Kurdistan

H Dadashzadeh Ahari; P Afzal; N Rashidnejad Omran

Volume 24, Issue 94 , March 2015, , Pages 219-224


  Separation of high grade from low grade veins and veinlets is very important operation in vein type deposits, especially in gold deposits because low value variations are very significant in their mineral exploration. In this paper, Concentration-Volume (C-V) fractal model was utilized for separation ...  Read More

Vein-type and Stratabound W (Cu-Au) Mineralization in Iran

S Ghaderi; E Rastad; N Rashidnejad-Omran; M Mohajjel

Volume 24, Issue 94 , March 2015, , Pages 305-314


  Tungsten (Cu-Au-Zn) deposits and occurrences in Iran can be divided into two separate categories based on their genesis, tectonic setting, mineral paragenesis and related processes inherent in their formation. The first category contains deposits, which are located in metamorphosed Late Triassic-Middle ...  Read More

Volcanic Red Bed Type Copper (-Silver) Mineralization in Keshtmahaki Deposit, Northwest of Safashahr, Southern Sanandaj-Sirjan Zone

M Boveiri Konari; E Rastad; N Rashidnejad-Omran

Volume 24, Issue 93 , December 2014, , Pages 19-36


  Lower Cretaceous volcano-sedimentary sequence in the northwest and southeast of Safashahr (Dehbid) in marginal subzone of southern Sanandaj-Sirjan Zone comprises the Keshtmahaki deposit and few other occurrences of copper (-silver). The oldest rock units in the region are Jurassic shale and sandstone, ...  Read More

Geological Evidences and Ore Body Facies of Tangedezan Zn – Pb (Ag) Deposit in a Jurassic-Cretaceous Carbonate Sequence, Booeen Miandasht (Isfahan, Iran)

S.T Delavar; I Rasa; M Lotfi; G Borg; N Rashidnejad Omran; P Afzal

Volume 23, Issue 91 , June 2014, , Pages 77-88


  Tangedezan Zn-Pb deposit is located in 22 km west of Booeen Miandasht city, in western part of Isfahan province and in Malayer–Isfahan Pb-Zn mineralization belt. This deposit is one of the stratabound deposits in a Jurassic-Cretaceous carbonate sequence. Two main ore body geometries have been recognized ...  Read More

Investigation of Magmatic Processes in the Quaternary Volcanism in NW of Ahar: a Geochemical and Isotopic Study

R Dabiri; M.H Emami; H Mollaei; M Ghaffari; M Vosougi Abedini; N Rashidnejad Omran

Volume 23, Issue 90 , March 2014, , Pages 55-62


  Quaternary volcanic rocks are widely developed in NW of Ahar, NW Iran. Based on geochemical data, these rocks mainly consist of alkali basalts, trachybasalts, basaltic trachyandesites and trachyandesites. The major- and trace-element chemistry indicates that the lavas are dominantly alkaline in character. ...  Read More

Anomaly Separation of Elements, Based on the Surface Soil Geochemical Data in Kahang Porphyry Copper – NW of Esfahan

H Harati; A Khakzad; N Rashidnejad Omran; H Asadi Harouni; S.J Javad Moghaddassi

Volume 23, Issue 89 , December 2013, , Pages 67-74


  The kahang Copper porphyry deposit on Urumieh-Dokhtar magmatic arc, is located in NE of Esfahan. Around of this deposit, Eocene volcanics and pyroclastic rocks ranging in composition from basaltic trachy-andesitic to dacitic are exposed. Granitoids subvolcanic and volcanoplutonic, the causes of alteration ...  Read More

Geochemistry and Petrogenesis of the Raveh Neogene Volcanic andSub-Volcanic Rocks in the Urumieh – Dokhtar Magmatic Belt (Central Iran)

M. H. Emami; R. Monsef; N. Rashid Nejad Omran

Volume 22, Issue 85 , December 2013, , Pages 91-104


  Miocene to Pliocene volcanic rocks in the Raveh region have exposed northern part of the Urumieh - Dokhtar Magmatic Belt. Neogene volcanic rocks are situated on Upper Red Formation. Magmatic activity separated in two phase. The first phase is composed of basic to intermediate volcanic rocks such as basaltic-andesite ...  Read More

Petrology, Geochemistry and Tectonomagmatic Settinng of Kaleybar Intrusion (Eastern Azarbaijan)

Gh. Tajbakhsh; M. H. Emami; H. Moine Vaziri; N. Rashidnejad Omran

Volume 22, Issue 85 , December 2013, , Pages 205-224


  Nepheline syenite intrusive of Kaleybar is located in South and West of the Kaleybar city in eastern Azarbayjan province. This zoned intrusive complex is formed by penetration of two separated silica undersaturated and saturatated magmatic phases with Oligocene-Miocene ages. Undersaturated rocks are ...  Read More

Petrography, Geochemistry, Origin and Tectonic Setting of Khoshoumi – DarAnjir Intrusive Complex, SW Saghand (Central Iran)

N. A. Rashidnejad Omran; A. A. Fattahi; F. Masoudi

Volume 22, Issue 86 , December 2012, , Pages 245-260


  The late Eocene post-collisional Khoshoumi- Dar-Anjir intrusive complex consist of two adjacent Khoshoumi granite and Dar Anjir diorite plutons  in Saghand area, located in 120 km northeast of Yazd in Central Iran structural zone. This complex intruded within high-grade metamorphic rocks of Chapedony ...  Read More

Introduction to New Concentration-Volume Fractal Method for Separation Zones in Porphyry Deposits

P. Afzal; A. Khakzad; P. Moarefvand; N. Rashid Nezhad Omran; Y. Fadakar Alghalandis

Volume 20, Issue 78 , December 2011, , Pages 167-172


  Determination of different zones in porphyry deposits is on of important goals in their exploration because this operation especially determination supergene zone is important for economical study in these deposits. Traditional methods based on alterations and mineralogical studies are not proper in ...  Read More

Post-Collisional Shoshonitic, C-type Adakitic and Lamprophyric Plutonism in the Khankandi Pluton, Arasbaran (NW Iran)

M. Aghazadeh; M. H. Emami; H. Moin Vaziri; N. Rashidnezhad Omran; A. Castro

Volume 20, Issue 78 , December 2011, , Pages 173-188


  Khankandi pluton is located in northwestren part of Iran, within Garadagh (Arasbaran) - south Armenia block. Main units of the pluton are monzonite and granodiorite associated with minor gabbro and lamprophyric and dacitic dykes. Granodioritic plutonism is followed by gabbro and monzonite. Lamprophyric ...  Read More