Studies of geological, mineralization and magnetite exploration geophysics in Senjedak-III area, the eastern anomaly of Sangan mine (Khorasan Razavi)
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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