REMOTE SENSING STUDIES FOR MAPPING OF IRON OXIDE REGIONS IN KEONJHOR DISTRICT, ODISHA, INDIADebasis Singh, Jagadish Kumar Tripathy and Sushree Sagarika Behera
Odisha is known for having a bounty of mineral resources, which are required for the economic and industrialdevelopment of the state. Ore minerals such as hematite, magnetite, pyrolusite, psilomelane, chromite etcare richly available in Odisha. A lot work has been done on the mineral property, texture, behaviour ofindividual ions in different chemical conditions within the domain of the aforesaid minerals and a very fewworks has reportedly been done on the spectral behaviour of these ore minerals. For the development ofhuman societies, economic and industrial demand of iron has been raised which resulted in search of newcost-effective techniques for the exploration of ore minerals containing Fe metal. Remote sensing methodsare now considered as modern and cost effective highly dynamic techniques for exploration of economic ore minerals containing iron oxides. In this study, various digitalimage processing techniques of remote sensingsuch as False Colour Composites (FCCs), Band Ratios (BRs), and Principal Components Analysis (PCA) were used on satellite derived images for mapping iron oxide mineralization zone. The results were compared with the already published maps and also with the field inspection. From the results, it was found that various band combinations of BRs and PCA may be used for mapping of iron oxide ore regions.