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)
Economic Geology
1. 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


  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
2. 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


  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
3. 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


  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

Economic Geology
4. Geology and genesis of Halab Mn deposit, SW Zanjan

Amir Naderi; Ghasem Nabatian; Maryam Honarmand; Hossein Kouhestani

Volume 29, Issue 115 , Spring 2020, , Pages 207-218


  Halab manganese deposit is located in the Sanandaj- sirjan zone, 100 km southwest of Zanjan. The rock units in the study area include Precambrian Kahar and Jangoutaran marble Formations. Manganese mineralization in the Halab area, occurred as veins and massive in the Jangoutaran marble and minor amount ...  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


  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


  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


  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. Sediment-hosted epithermal gold mineralization at Arabshah, SE Takab, NW Iran

S. M. Heidari; M. Ghaderi; H. Kouhestani

Volume 27, Issue 105 , Autumn 2017, , Pages 265-282


  Arabshah gold deposit formed through hydrothermal activity with an age of ~11 Ma (based on zircon U-Pb dating by LA-ICP-MS), in 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 ...  Read More

9. The Arpachay mineralization occurrence, north of Takab: an epithermal base metal mineralization in the Takab-Angouran-Takht-e-Soleyman metallogenic zone

L. Talebi; M. A. A. Mokhtari; M. Ebrahimi; H. Kouhestani

Volume 26, Issue 104 , Summer 2017, , Pages 281-296


  Arpachay Pb-Zn-Cu mineralization occurrence is located in the Takab-Angouran-Takht-e-Soleyman metallogenic zone, 60 km north of Takab. Rock units exposed in the area consist of Oligo-Miocene volcanic, volcano-sedimentary and sedimentary units which are intruded by gabbroic and granodioritic plutons.  ...  Read More

10. Touzlar Epithermal Au-Ag (Cu) Deposit, Subvolcanic Intrusion-related of Intra-arc Extensional Setting, Northwest Mahneshan, Iran

S.M Heidari; M Ghaderi; H Kouhestani; M Hosseini

Volume 24, Issue 94 , Winter 2015, , Pages 329-349


  The Touzlar epithermal gold deposit formed within the high-K calc-alkaline (shoshonitic) andesitic volcanic units in northwestern Iran. The volcanic complex is in fact a part of magmatism related to the Urumieh-Dokhtar Magmatic Belt crosscutting northeastern rim of the Sanandaj-Sirjan Metamorphic-Magmatic ...  Read More

11. Whole-Rock and Sr-Nd Isotope Geochemistry of Volcanic Host Rocks of the Chah Zard Ag-Au Deposit, Urumieh-Dokhtar Belt

H Kouhestani; M.H Ghaderi; M.H Emami; S Meffre; V Kamenetsky; J McPhie; Kh Zaw

Volume 23, Issue 90 , Winter 2014, , Pages 185-196


  The Chah Zard Ag-Au deposit, a typical breccia-hosted low- to intermediate-sulfidation epithermal system, is located within late Miocene andesitic to rhyolitic volcanic complex in the central part of the Urumieh-Dokhtar magmatic belt. The orebodies are emplaced in breccia bodies dominantly hosted by ...  Read More

12. Chah Zard Deposit: Breccia-Hosted Epithermal Ag-Au Mineralization in the Urumieh-Dokhtar Belt

Majid Ghaderi; H. Kouhestani; M. H. Emami; K. Zaw

Volume 22, Issue 87 , Autumn 2013, , Pages 9-24


  The breccia-hosted epithermal Ag-Au deposit of Chah Zard is located within an andesitic to rhyolitic volcanic complex in the central part of the Urumieh-Dokhtar magmatic belt. At this location, magmatic and hydrothermal activity was associated with local extensional tectonics, formed in the Dehshir-Baft ...  Read More