The main effective factors on the mineralization of Sonajil porphyry-epithermal copper-gold deposit, using remote sensing, mineralogical and geochemical studies
Subject Areas :
Mohammad Maanijou
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Keywords: Copper-gold mineralization Porphyry-epithermal deposit Geochemistry Remote sensing NW Iran.,
Abstract :
In order to identify the main effective factors in the Sonajil Cu-Au porphyry-epithermal deposit, remote sensing, mineralogical and geochemical studies were carried on the deposit. After removing vegetation and topographic features by Normalized Difference Vegetation Index (NDVI), solar radiance, instrumental errors and albedo effects by Log Residual (LR), Band Ratio (BR), False Color Composite (FCC), Principal Component Analysis (PCA) and Mixture-Tuned Matched-Filtering (MTMF) were used to reveal main alteration zones of the study area. The phyllic, advanced argillic and propylitic altered rocks were identified and the results were validated by field and mineralogical studies. Also, geochemical data showed microdiorite, and shoshonite composition and also post-orogenic tectonic setting of the Sonajil porphyry-copper deposits. Eventually, the faulting density, composition, and the depth of mineralization were the affecting factors on the Sonajil deposit mineralization.
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