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Sangan iron mine with skarn type genesis is located in NE Iran (Khorasan Razavi Province), in the Central Iran zone and NE of Lut Block sub-zone. The Senjedak-III prospect area is one of the six eastern anomalies of Sangan iron mine that encompasses eastern terminal of Khaf- Kashmar- Bardaskan volcano-plutonic belt. The geology of this area consists of a series of igneous (dykes and intrusive bodies), metamorphic (skarn, slate and phyllite) and sedimentary rocks (sandstone, limestone and dolomite). The Senjedak complex is an exo-skarn and includes mineralization such as magnetite, pyrrhotite, chalcopyrite, pyrolusite, pyrite, arsenopyrite, hematite, goethite, limonite and malachite. Sulfide mineralization is associated with retrograde skranification stage whereas oxides/hydroxides mineralization is in connection with fault zones. Ground magnetic surveys show three magnetic anomalies of A, B, and C in the area. The A and B abnormalities have deep origin and may be related to each other. Separation in these abnormalities is attributed to the activity of secondary faults. The C magnetic anomaly that is consistent with the magnetite outcrop in the eastern parts of the range is weaker and has no deep-seated origin. The results of this research can be used to continue exploratory operations at deep anomalies.

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The Kuh-e-Band-e-Siah is located about 55 km northwest of Anarak and western part of the Central-East Iranian Microcontinent. In the studied area, the volcanic rocks of Eocene- Oligocene age with mafic to intermediate composition are exposed, and andesitic rocks are the predominant volcanic rocks. The most common textures of these rocks are porphyritic, glomeroporphyritic, trachytic, and microlitic porphyritic. The volcanic rocks of Kuh-e- Band-Siah are composed of primary minerals including clinopyroxene, plagioclase, amphibole, and quartz. Whole rock geochemical data reveal the calc-alkaline nature of volcanic rocks from Kuh-e- Band-Siah. The chondrite and primitive mantle normalized diagrams of the studied rocks show that these rocks have been enriched in LREE and LILE and have been depleted in HFSE. The negative anomalies of Ti, Nb, and Ta show that the studied samples are probably formed in a subduction zone and their similarity to volcanic rocks of continental arcs or convergent margins. The geochemical and tectonic setting studies of these rocks suggest that the parental magma has been derived from the partial melting of less than 15% of a metasomatized spinel lherzolite of lithospheric mantle.

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The studied area is located in the northeast of Hormozgan Province, in the structural divisions between the Zagros and Makran zones in the Kohnouj-Rodan-Minab ophiolitic belt. This area includes ultramafic rocks such as harzburgite,lherzolite, and dunite. The main minerals of these rocks include olivine, orthopyroxene, clinopyroxene, serpentinite, and chrome spinel. According to mineral chemistry, olivine crystals have a chrysolite-forsterite composition (Fo85 to Fo89). Orthopyroxenes and clinopyroxenes have bronzite-enstatite and diopside compositions, respectivley. Clinopyroxenes have crystallized at a temperature between 1037 and 1207 and a high pressure of about 6 to 10 kbar. Chrome spinel mineral mainly has a uniform composition, with enrichment in Al2O3 and TiO2 and mantle nature. It has the lowest depletion rate and shows a maximum of 14% partial melting. The ultramafic rocks of this region are within the Alpine type. The low Al2O3 and the high #Mg in orthopyroxenes and forsterite composition (Fo85 to Fo89) of olivines with low CaO content in them show that partial melting is the most important event. It is in the formation of ultramafic rocks of this region and the formation of these rocks is tectonically compatible with oblique subduction environment.