Sorkhe‐Dizaj Iron Oxide–Apatite Ore Deposit in theCenozoicAlborz‐Azarbaijan Magmatic Belt,NW Iran

Abstract

The Sorkhe-Dizaj iron oxide-apatite deposit in the Cenozoic Alborz-Azarbaijan magmatic belt, NW Iran, is hosted mainly by a Late Eocene to Oligocene quartz-monzonitic body, and subordinately in the Eocene volcanic and volcanoclastic sequences. The Sorkhe-Dizaj intrusive body is an I-type granitoid of the calc-alkaline series. Mineralization is associated with actinolization, K-feldspar, sericitic, propylitic, and tourmaline alteration types. The orebodies are massive, banded, stockwork, and breccia in shape and occur mainly along the fault zones within the quartz-monzonitic intrusion, volcanic, and volcanoclastic rocks. Ore minerals dominantly comprise magnetite, apatite, and monazite, as well as minor amounts of chalcopyrite, bornite, and pyrite. Four major paragenetic stages are discriminated in the mineralization including early, oxide, sulfide, and late stage. The Sorkhe-Dizaj deposit is similar in the aspects of host rock lithology, alteration, and mineralogy to the Kiruna-type deposits associated with minor Cu sulfide minerals. Spatial and temporal association of the mineralization with the Late Eocene-Early Oligocene quartz-monzonite intrusive body suggests that the ore fluid was probably related to magmatic activity.

Geology, geochemistry, and some genetic discussion of the Chador-Malu iron oxide-apatite deposit, Bafq District, Central Iran

“…Similar magnetite and apatite REE patterns have widely been interpreted as an indicator of their common origin (see, e.g., Frietsch and Perdahl 1995;Nabatian et al 2012;Mokhtari et al 2013, among others). The REE patterns of the magnetite and apatite samples from Chador-Malu are very similar in terms of their LREE/HREE fractionation and negative Eu anomalies ( Fig.…”

The Shah-Ali-Beiglou Zn-Pb-Cu (-Ag) Deposit, Iran: An Example of Intermediate Sulfidation Epithermal Type Mineralization

“…THMP with 70-150 km wide and 300 km long hosts several epithermal Ag-Au and base-metal deposits including: low-sulfidation (Chargar, Nikuyeh), intermediate-sulfidation (Aqkand, Glojeh), and high-sulfidation (Chodarchay, Khalifehlu) deposits ( Figure 2; Table 1) [2,3,18,35,36]. Moreover, it hosts many iron oxide-apatite deposits (including Sorkheh-Dizaj, Aliabad, Morvarid and Zaker; [22,25,37]. All of these deposits were formed in a post-collisional environment, as a result of the Tertiary magmatism with the NW-SE strike within an arc tectonic setting [11,14,27,[38][39][40].…”

Fluid inclusions and C–H–O–S–Pb isotope systematics of the Senj Mo–Cu deposit, Alborz magmatic belt, northern Iran: implications for fluid evolution and regional mineralization

“…Similar to its adjacent areas, the Alborz magmatic belt hosts a variety of ore deposit types, particularly epithermal polymetallic deposits (B Hajalilo, unpub. PhD thesis, Beheshti Univ., Iran, 1999;Mehrabi et al 2016;Tale Fazel et al 2019;Zamanian et al 2020), Kiruna-type deposits (Nabatian et al 2013), Mo-Cu-Au mineralized deposits related to I-type granitoids (Jamali et al 2009;Aghazadeh et al 2015), and fluorite deposits (Shafiei Bafti et al 2021). Most of these deposit types are spatially and temporally related to Eocene-Oligocene calc-alkaline magmatic rocks (Berberian & King, 1981;Nabatian et al 2014), generated in subduction-related and postsubduction settings associated with closure of the Neo-Tethyan Ocean basins (e.g.…”