34579b56-abb0-4178-a4b9-0f288ede4e47 English MD_CharacterSetCode_utf8 Individual item (e.g. a one-off academic paper or single website) British Geological Survey Contact for the metadata enquiries@bgs.ac.uk pointOfContact 2024-11-07 ISO19115 2003/Cor.1:2006 mineral detection and band ratioing 2014-12-01 creation 2014-12-01 publication revision MICA WP3 2018-11-03T15:16:00 Record extracted from Batch 3 spreadsheet MICA_B3-127 https://www.mica-project.eu/ No other citation details provided a peer reviewed paper in the international journal of scientific and engineering research. Landsat 7ETM+ of Bwari local government area of Abuja federal Capital Territory located in the middle belt of Nigeria was used to detect and map locations of hydrothermal alterations. Image processing methods used includes image rectification, spatial and spectral enhancement, band ratio, false colour composition (FCC) and Crosta technique. Band ratios 3/1 and (4/5 – 4/3) suggested the presence of ferric iron minerals and hydroxyl minerals respectively. Clay mineralization was detected using band ratio 5/7. While false colour composite of bands 7:4:2 was employed to delineate potential locations of hydrothermal alterations. In both the band ratio and false colour composite there was interference from vegetation which affected the results. Subsequently, Principal Component Analysis (PCA) and Crosta technique were employed to supress the interference. Resultant grey tone images from PCA shows white pixels depicting iron-oxide and hydroxyl mineral deposits. To enhance the location of mineral deposits, false colour composite of the resultant images and a sum of the two images were displayed as RGB respectively. Hydrothermal alteration zones hosting the mineral deposits were identified. The identification of the hydrothermal alteration zones were correlated with the geological map and the ground-truth coordinates of already existing mines obtained from the study area. Website: https://www.ijser.org/researchpaper/Mineral-Detection-and-Mapping-Using-Band-Ratioing.pdf Purpose for data generation is not known International Journal of Scientific & Engineering Research Contact for the resource described by the metadata unknown unknown unknown https://www.ijser.org/researchpaper/Mineral-Detection-and-Mapping-Using-Band-Ratioing.pdf WWW:LINK-1.0-http--link https://www.ijser.org/researchpaper/Mineral-Detection-and-Mapping-Using-Band-Ratioing.pdf Link for further information on the resource Party that supplies the resource https://resources.bgs.ac.uk/images/minerals/micaGraphic/B3/MICA_B3-127.JPG MICA dataCentre Geological time MICA ontology (TemporalScheme) 2 General descriptive information / Paper MICA ontology (DataScheme) 2 Requirement for data generation: Voluntary Method of data or information generation: Academic research Exploration GEMET Concepts 2014-07-25 revision 2 Geology GEMET Concepts 2014-07-25 revision 2 Geophysical GEMET Concepts 2014-07-25 revision 2 Mineralogical GEMET Concepts 2014-07-25 revision 2 Minerals GEMET Concepts 2014-07-25 revision 2 Sciences dealing with the composition, structure, origin of the Earth's rocks GEMET Concepts 2014-07-25 revision 2 Gold INSPIRE commodities Silver INSPIRE commodities Copper INSPIRE commodities Lead INSPIRE commodities Tin INSPIRE commodities Tungsten INSPIRE commodities Tantalum INSPIRE commodities Sand and gravel INSPIRE commodities Dimension and building stone INSPIRE Enduse Potential Calcite for filler INSPIRE commodities Detailed geophysics MICA ontology (DomainScheme) 2 Remote sensing (including regional geophysics) MICA ontology (DomainScheme) 2 Available for free for all purposes Not confidential English geoscientificInformation economy Bwari area, Nigeria Region within a country (please provide more details) Individual item (e.g. a one-off academic paper or single website) Data uncertainty Are any uncertainty measures provided (e.g. standard errors, confidence intervals, etc.)? false Quality assurance procedures Are quality assurance procedures described? false Information generation methods Are data or information generation methods formally described? true Record review Reviewed by: British Geological Survey Record validation false Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services 2010-12-08 Organisation source implies that information should be of good quality Metadata is distributed with a CC BY-ND 4.0 (Attribution-NoDerivs 4.0 International) licence