Investigation of mineralization and fluid inclusions of the Lapeh-Zanak copper deposit, Central Alborz zone, Iran

Authors

  • Abedini,
  • Fathollahpor,
  • Tajeddin,
Abstract:

The Lapeh-Zanak copper deposit is located about 15 km east of Tehran, in the southern part of the Central Alborz Zone. The rock units exposed in this area include a sequence of volcanic and pyroclastic rocks (basalt, andesite, trachy-andesite and dacitic and vitric tuff) belonging to the Fajan Formation with the Paleocene-Lower Eocene age, which are cut by subvolcanic igneous masses with a composition of micromonzodiorite-gabbro. Copper mineralization in the Lepeh-Zanak deposit occurred in the form of quartz veins-veinlets (± carbonate and barite) along with silicic, argillic, carbonate and propylitic alterations in andesite-trachyandesite rocks. Vein-veinlet and breccia structures and textures are very common in the copper- bearing ore in this deposit. The mineralogy of ore is simple and includes primary minerals of pyrite, chalcopyrite, magnetite, hematite and rutile, which are accompanied by secondary minerals such as digenite, covellite, malachite, and iron hydroxide compounds. The fluid inclusion studies of quartz and barite minerals in copper-bearing ores and barite veins indicate that majority of primary inclusions are two-phase liquid-rich (L+V). Microthermometric studies show that the homogenization temperatures in quartz and barite vary in the range of 100 to 198 and 110 to 207 °C, respectively. Salinity in the primary inclusions of these two minerals shows the range from 0.88 to 8.55 and 4.96 to 7.86% wt% NaCl eq., respectively. Salinity in quartz and barite minerals is in the range of 0.88 to 8.55 and 4.96 to 7.86 wt% NaCl eq., respectively. Based on the results of microthermometric of fluid inclusions, cooling and dilution of hydrothermal fluids with atmospheric waters are the main reasons for the deposition of minerals in the studied deposit. The combination of the results obtained from geological, mineralogical, alteration and fluid inclusions reveals that the Lapeh-Zanak copper deposit has most similar to low-intermediate sulfidation epitermal-type deposits.  

Upgrade to premium to download articles

Sign up to access the full text

Already have an account?login

similar resources

Investigation of mineralization, alteration, and fluid inclusions of the Takht-e-Gonbad copper deposit (northeast of Sirjan, SE Iran)

The Takht-e-Gonbad copper mineralization is located about 63 km of northeast of Sirjan city. Hypogene mineralization occurred as stockwork vein-veinlets and thick quartz veins hosted by Oligo-Miocene micro-granodiorite body and Eocene pyroclastic materials (mainly tuff with intermediate composition). The stockwork vein-veinlets contain three generations of mineralization, (1) quartz + magnetite...

full text

Type of mineralization and studies of fluid inclusions of the Bolboli2 copper ore deposit, northeast of Sirjan, SE Iran

The Bolboli2 copper ore deposit is located about 110 km southwest of Kerman and lies in the Dehaj-Sarduieh metallogenic belt (Kerman Cenozoic Mamatic Arc, KCMA). This ore deposit is hosted by the Eocene extrusive igneous rocks (tuff, agglomerate, andesite, and dacite) and the Oligo-Miocene intrusive igneous body (granodiorite). These rocks are host the propylitic, phyllic, and silicic alteratio...

full text

Investigation of mineralization, REE geochemistry, and fluid inclusions studies of the Shalang vein-type polymetallic ore deposit, southwest of Kerman

The Shalang vein-type polymetallic ore deposit is located about 10 km southwest of Kerman and 70 km northeast of Sirjan, and lies in the central part of the Dehaj-Sarduieh metallogenic belt. This deposit is hosted by dacitic and andesitic vitric and crystal tuffs along with andesitic-dacitic lava flows of Eocene age. The alteration zones related to this deposit are propylitic, intermediate argi...

full text

The copper deposit of the Zamin Hossein district, Dehaj- Sarduiyeh metallogenic belt, SE Iran: Constraints on ore mineralization, alteration, and fluid inclusions

The Zamin Hossein copper deposit, as a part of the Dehaj- Sarduiyeh metallogenic belt, is located about 170 km southeast of Kerman city. This deposit is accompanied by Eocene volcanic (andesite, andesi-basalt and pyroclastic) and Eocene intrusive body (granodiorite and granite). The propylitic, sericitic, argillic-sericitic and silicic alterations are associated with this deposit. Chalcopyrite ...

full text

an investigation about the relationship between insurance lines and economic growth; the case study of iran

مطالعات قبلی بازار بیمه را به صورت کلی در نظر می گرفتند اما در این مطالعه صنعت بیمه به عنوان متغیر مستفل به بیمه های زندگی و غیر زندگی شکسته شده و هم چنین بیمه های زندگی به رشته های مختلف بیمه ای که در بازار بیمه ایران سهم قابل توجهی دارند تقسیم میشود. با استفاده از روشهای اقتصاد سنجی داده های برای دوره های 48-89 از مراکز ملی داده جمع آوری شد سپس با تخمین مدل خود بازگشتی برداری همراه با تعدادی ...

15 صفحه اول

Geochemistry and mineralization of the East Ridge ore zone in Mehdiabad zinc-lead- barite deposit, Yazd Province, Central Iran

Mehdiabad zinc-lead-barite deposit is located in the Central Iran structural zone and about 116 km southeast of Yazd. The host rock of this deposit is Lower Cretaceous dolomitic limestone of the Taft Formation . The main ore minerals in the Mehdiabad East Ridge ore zone include hemimorphite, hydrozincite, cerussite, and chalcophanite. Ore textures are mainly replacement, brecciated, and open-sp...

full text

My Resources

Save resource for easier access later

Save to my library Already added to my library

{@ msg_add @}


Journal title

volume 30  issue 2

pages  253- 266

publication date 2022-05

By following a journal you will be notified via email when a new issue of this journal is published.

Keywords

No Keywords

Hosted on Doprax cloud platform doprax.com

copyright © 2015-2023