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)
Petrology
1. Petrology and geochemistry of Oligocene rhyolite lavas, from south of Qezel Ozan River: post- collision acidic volcanism

Tahereh Parsa; Monireh Kheirkhah; Mir Ali asghar Mokhtari

Volume 31, Issue 3 , Autumn 2021, , Pages 49-60

http://dx.doi.org/10.22071/gsj.2021.229547.1788

Abstract
  Cenozoic acidic volcanic rocks at the south of Qezel Ozan River are located within the Western Alborz-Azarbaijan magmatic zone and northern part of the Iranian-Turkish Plateau. The Oligocene acidic lavas in north part of Zanjan show rhyolitic to dacitic composition.  Hyaloporphyritic to hyalomicrolithic ...  Read More

Economic Geology
2. Type and origin of the north Chargar Cu-Au mineralization, southeast Zanjan: using petrological, mineralogical and geochemical data

Fatemeh Naderlou; Mir Ali asghar Mokhtari; Hossein Kouhestani; Ghasem Nabatian

Volume 31, Issue 2 , Summer 2021, , Pages 149-162

http://dx.doi.org/10.22071/gsj.2020.185408.1652

Abstract
  North Chargar Cu-Au mineralization located within the Tarom-Hashtjin sub-zone. This area composed of andesite and quartz-andesite lavas alternated with tuffaceouce rocks. The volcanic rocks have calc-alkaline nature and were formed in an active continental margin. Mineralization present as ore-bearing ...  Read More

Economic Geology
3. Geochemistry and tectonomagmatic setting of volcanic rocks of Qoyjeh Yeylaq area (South of Qeydar), Zanjan Province

Hossein Bagherpour; Mir Ali Asghar Mokhtari; Hossein Kouhestani; Ghasem Nabatian

Volume 31, Issue 1 , Spring 2021, , Pages 51-62

http://dx.doi.org/10.22071/gsj.2019.152998.1555

Abstract
  Qoyjeh Yeylaq volcanic rocks is located approximately in the 120 km southwest of Zanjan, within the Central Iranian zone. The rock units in this area belong to the Cenozoic which consist of mainly Oligo-Miocene volcanic (Basaltic- andesitic lavas) and sedimentary rocks. Based on geochemical classification, ...  Read More

Economic Geology
4. Petrography and geochemistry of major and trace elements of the Upper Red Formation at Chehrabad Pb-Zn deposit, northwest of Zanjan, implication for provenance and tectonic setting

Ali Rajabzadeh; Hossein Kouhestani; Mir Ali Asghar Mokhtari; Afshin Zohdi

Volume 29, Issue 116 , Summer 2020, , Pages 49-60

http://dx.doi.org/10.22071/gsj.2018.99539.1271

Abstract
  In this study, petrography and major and minor elements geochemical data are presented for sandstone layers of the Upper Red Formation (URF) in the Chehrabad Pb-Zn deposit (NW Zanjan) to investigate sandstone composition, tectonic setting and their source rock. In this area, URF has 980 m thickness and ...  Read More

5. Petrology, geochemistry and tectonomagmatic setting of intrusive rocks in Qarachilar Cu-Mo-Au mineralization (NE Kharvana, Eastern Azarbaijan)

Fariba Asiay Soufiani; Hossein Kouhestani; Amir Morteza Azimzadeh

Volume 28, Issue 112 , Summer 2019, , Pages 227-240

http://dx.doi.org/10.22071/gsj.2017.82508.1087

Abstract
  Qarachilar Cu-Mo-Au mineralization is located within the Qaradagh batholite in the Arasbaran metalogenic zone. This area is a part of southern margin of Lesser Caucasus. Qaradagh batholite at the Qarachilar mineralization area composed of granodiorite- quartz monzodiorite (as the main phase and host ...  Read More

Economic Geology
6. Mianaj iron occurrence, southwest of Zanjan: Metamorphosed and deformed volcano-sedimentary type of mineralization in Sanandaj- Sirjan zone

Fattaneh Pourmohammad; Hossein Kouhestani; Amir Morteza Azimzadeh; Ghasem Nabatian; Mir Ali Asghar Mokhtari

Volume 28, Issue 111 , Spring 2019, , Pages 161-174

http://dx.doi.org/10.22071/gsj.2017.84283.1099

Abstract
  Mianaj Fe ore occurrence is located in the Takab-Angouran-Takht-e-Soleyman metallogenic zone, 100 km southwest of Zanjan. In this area, Fe mineralization occurs as lens-shaped bodies parallel to the foliation of schist and rhyolitic meta-tuff units (equal to Kahar Formation). Based on mineralography, ...  Read More

Economic Geology
7. Tashvir ore occurrence, NE Zanjan: Intermeiate-sulfidation style of epithermal base metal (Ag) mineralization in the Tarom-Hashtjin zone

Hossein Kouhestani; Mir Ali Asghar Mokhtari

Volume 28, Issue 110 , Autumn 2018, , Pages 97-108

http://dx.doi.org/10.22071/gsj.2018.91903.1193

Abstract
  Tashvir ore occurrence, 75 km northeast of Zanjan, is located in the Tarom-Hashtjin subzone. Mineralization occurs as ore-bearing quartz vein-veinlets within the Eocene tuffs and andesitic lavas (equal to Karaj Formation). Ore minerals include chalcocite, chalcopyrite and galena, and quartz, calcite ...  Read More

8. Petrology and geochemistry of the Aqkand acidic volcanic rocks and perlites, North of Zanjan

M Ebrahimi; H Kouhestani; M.A.A Mokhtari; M Feizi

Volume 26, Issue 101 , Autumn 2017, , Pages 99-110

http://dx.doi.org/10.22071/gsj.2016.41039

Abstract
  The Aqkand area is located at 48 km north of Zanjan and is a part of the Tarom subzone within the Western Alborz-Azerbaijan structural zone. Acidic rocks exposed in this area consist of Oligocene rhyolite-rhyodacite, perlite, pitchstone and ignimbrite. Rhyolites and rhyodacites are exposed as domes and ...  Read More

Economic Geology
9. Mineralogy, geochemistry, fluid inclusion study and genesis of Homeijan magnetite- apatite mineralization, SW Behabad, Yazd province

R. Amirkhani; M. Ebrahimi; M. A. A. Mokhtari; A. M. Azimzadeh

Volume 26, Issue 103 , Spring 2017, , Pages 83-100

http://dx.doi.org/10.22071/gsj.2017.46732

Abstract
  The study area which is introduced as Homeijan magnetite- apatite mineralization in this paper, is a part of the Posht-e-Badam block in the Central Iranian Zone and is located at ~12Km southwest of Behabad. This area is composed of volcano-sedimentary rocks and acidic- basic intrusions of Precambrian ...  Read More

10. Investigation on type and origin of copper mineralization at Aliabad Mousavi- Khanchy occurrence, east of Zanjan, using petrological, mineralogical and geochemical data Mir Ali Asghar Mokhtari, Hossein Kouhestani*, Arefeh Saeedi

M.A.A Mokhtari; H Kouhestani; A Saeedi

Volume 25, Issue 100 , Summer 2016, , Pages 259-270

http://dx.doi.org/10.22071/gsj.2016.40756

Abstract
  Aliabad Mousavi- Khanchy Cu occurrence is located in the Tarom area, 30 km east of Zanjan. Rock units exposed in this area consist of Eocene volcanic and volcano-sedimentary units (equal to Karaj Formation) which are intruded by Oligocene quartz-monzonitic plutons. In this area, Cu mineralization occurs ...  Read More

11. Geology, mineralogy and genesis of stratiform Cu mineralization in the Tazeh-Kand area, Northeast of Tabriz

S Enayati Kolaie; M Yazdi; M.A.A Mokhtari

Volume 25, Issue 99 , Spring 2016, , Pages 195-208

http://dx.doi.org/10.22071/gsj.2016.40911

Abstract
  Tazeh-Kand Cu mineralization area is located in ~20 km northeast of Tabriz, eastern Azarbaijan province. The area is a part of Central Iranian geo-structural zone in the eastern margin of the Tabriz 1:100000 geological map. Lithological units in this area composed of green- grey sandstones (redox zone), ...  Read More

12. Petrology and geochemistry of Homijan granitoid and associated felsic rocks (SW Behabad, Central Iran)

F Mohamadi; M Ebrahimi; M.A.A Mokhtari

Volume 25, Issue 98 , Winter 2016, , Pages 223-236

http://dx.doi.org/10.22071/gsj.2016.41219

Abstract
  The study area,~12 km to the southwest of the city Behabad, is a part of the Posht-e-Badam Block in Central Iran. Igneous rocks in the area occur as intrusive, sub-volcanic and volcanic bodies and exhibit a wide range of composition from felsic to mafic. The intrusive and sub- volcanic rocks include ...  Read More

13. Geologyand Origin of Oras-kuh Pb-Zn Deposit in Eastern Albors (Semnan Province)

M Lotfi; M Hekmatian; A.A Shabani; M.A Mokhtari

Volume 24, Issue 96 , Summer 2015, , Pages 73-84

http://dx.doi.org/10.22071/gsj.2015.41679

Abstract
  Oras-kuh lead-zinc deposit is located at about 79 km north-east of Semnan city. This deposit is considered as stratabound and occurs in the upper part of the Triassic dolomitic limestone of the Elika formation. Oras-kuh structure includes a northeast - southwest trending normal anticline and follows ...  Read More

14. Geology, Alteration, Geochemistry and Fluid Inclusion of Au Mineralization in the North Bazman

M.R Omidvar Eshkalak; A.A Mokhtari

Volume 24, Issue 95 , Spring 2015, , Pages 165-180

http://dx.doi.org/10.22071/gsj.2015.42427

Abstract
  The studied area is located in the southeastern end of the Sahand- Bazman Magmatic Belt in the north of Bazman volcano. This area composed of Miocene volcanic rocks including andesitic to dacitic lavas along with tuffaceous sandstone, ignimbrite, agglomerate, tuff and siltstone that underwent propyilitic, ...  Read More

15. Geology, Mineralogy and Fluid Inclusion Investigation of Supergene Zn Deposit in Kharengun Zone, Northeast of Bafq,Central Iran

Z Miriyan; M Lotfi; A.A Shabani; M.A.A Mokhtari; E Haj Molla Ali

Volume 24, Issue 95 , Spring 2015, , Pages 233-242

http://dx.doi.org/10.22071/gsj.2015.42435

Abstract
  The Kharengun area is located in the Yazd province, Central Iran, 130 km east of Yazd city and 65 km northeast of Bafq city. Mineralization in Kharengun area occurred within calcic and dolomitic units of the Rizou Formation (equivalent to Soltaniyeh Formation) of upper Precambrian- lower Cambrian age. ...  Read More

16. Geology, Mineralogy and Geochemistry of Bauxitic- Lateritic Horizon in the Deilaman- Eshkevarat Area, Central Alborz

M.R Omidvar Ashkalack; A Khakzad; N Nezafati; M.A.A Mokhtari; B Borna; S Rozbeh Kargar

Volume 23, Issue 92 , Summer 2014, , Pages 199-208

http://dx.doi.org/10.22071/gsj.2014.43702

Abstract
  The studied area is located in the western part of the Central Alborz structural zone and contains a bauxitic- lateritic horizon between the Elika and Shemshak formations. This horizon belongs to the middle Triassic, and croups out with E-W trend in the four regions (trends) including Zard Kuh- Loriteh, ...  Read More

17. Geology and Geochemistry of Aniq-Qarachilar Au- Cu- Mo Mineralization (NE of Kharvana, Eastern Azarbaijan)

M.A.A Mokhtari; H Moinvaziri2; M.R Ghorbani; M Mehrpartou

Volume 23, Issue 90 , Winter 2014, , Pages 135-150

http://dx.doi.org/10.22071/gsj.2014.43973

Abstract
  Au-Cu-Mo mineralization of Aniq-Qarachilar area is located in Arasbaran ore zone within the Qaradagh batholith. Mineralization in this area mainly includes Au-Cu-Mo bearing quartz veins within the granodiorite that cropped out in three areas include: Qarachilar (2 major veins), Zarlidareh (8 veins) and ...  Read More

18. The Mineralogy and Petrology of Kamtal Skarn (North of Kharvana, Eastern Azarbaijan)

M. A. A. Mokhtari; H. Moinvaziri; M. R. Ghorbani; M. Mehrpartou; G. Hosseinzadeh

Volume 22, Issue 86 , Autumn 2012, , Pages 213-220

http://dx.doi.org/10.22071/gsj.2012.54089

Abstract
  Kamtal skarn zone is located in the 20km north of Kharvana in the Eastern Azarbaijan. Skarn-type metasomatic alteration is the result of Kamtal monzonitic intrusion into the Upper Cretaceous impure carbonates. Kamtal skarn include exoskarn and endoskarn zones. Exoskarn is the major zone that its thickness ...  Read More

19. Petrology, Geochemistry and Tectonomagmatic Setting of Kamtal Intrusion (North of Kharvana, Eastern Azarbaijan)

M .A. Mokhtari; H. Moein Vaziri; M.R. Ghorbani; M. Mehr Parto

Volume 18, Issue 71 , Winter 2009, , Pages 123-128

http://dx.doi.org/10.22071/gsj.2010.56999

Abstract
  Kamtal intrusion is located in East Azarbaijan province, NW of Iran, near the Armenia border. The Kamtal intrusion consist of an acidic part with monzogranitic composition and an intermediate- basic part which compositionally composed of monzonite, monzodiorite, quartz  monzonite, quartz monzodiorite ...  Read More