Remotely Sensed Ore Mineralization Potentials in Ramand Altered Region, North of Iran

Abstract

Abstract:In some regions the main geological occurrences contain igneous pyroclastics formations such as rhyodacite and rhyolithic tuffs. An extended region with dominant alterations has been detected by remote sensing techniques for sampling purposes according to field observation activities. Enhancement of alterations has been done in Ramand region after applying a Crosta-based selective principle component analysis technique on ETM photomaps. Advanced Silicification haloes are most important evidence indicate to Base and Precious metals potentials in postmagmatic environments. For identifying the Silica content and related variations in epithermal systems, Crosta technique is adequate. This method introduces to recognition some clay and iron-oxides aggregations as the main part of gold bearing hydrothermal alterations in prospected regions. Concluded photomaps of which signals have been improved by mathematical analysis contained number of unique digital numbers related to mineralization potentials in Ramand region, Qazvin province, Iran.

Multi-Sensor Satellite Remote-Sensing Data for Exploring Carbonate-Hosted Pb-Zn Mineralization: Akhlamad Area, Razavi Khorasan, North East Iran

“…Accordingly, the PC7 image can be used to map carbonate-bearing rocks as turquoise pixels in the study area (Figure 8d). Most of the carbonate units such as J md , J 11 , E 1 , and J l are mapped in the PC7. The PC6 shows a strong positive contribution in band 4 (0.52) and negative great loadings in bands 5 (−0.33) and band 6 (−0.58) (Table 4).…”

“…Hematite, limonite, illite, and jarosite J md , J 1 , E c , E 1 , and J 11 Quartz, muscovite, chlorite, and kaolinite Q t , J 1 , and J 11 Calcite, dolomite, pyrite, galena, and sphalerite J md…”

“…Mining 2024, 4 368 Landsat sensors (e.g., Landset-7) were used to detect hydrothermal alteration zones using image-processing methods such as false color composite (FCC), band ratio (BR), and principal component analysis (PCA) [11]. Landsat-8 collects images for nine visible, nearinfrared (VNIR) and shortwave infrared (SWIR) bands (termed the Operational Land Imager (OLI)) and two long-wave thermal bands (named the Thermal Infrared Sensor (TIRS).…”