Environmental Monitoring

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Mineral Mapping

Minerals are an essential physical resource that drives economic growth and puts pressure on the local environments. The detection and mapping of minerals is an integral part of sustainable growth. Exploiting the reflected radiation from the observed objects, multispectral satellite images are constantly used to identify and map minerals on the surface of the earth and other planets! Combining visible, near-infrared, and short wave infrared bands in pseudocolor composites, mineral deposits can be revealed. Spectral indices, such as NDVI, NDWI, NDGI, etc, are often used in RGB composites to visually enhance regions with different types of minerals.

 landsat 8 RGB 432

RGB 432

landsat 8 RGB 543

RGB 543

landsat 8 RGB 564

RGB 564

 landsat 8 RGB 652

RGB 652

 landsat 8 RGB 764

RGB 764

landsat 8 RGB NBRI NDMI NDSI

RGB NBRI-NDMI-NDSI

 Landsat 8 RGB composites in Cuprite area, USA

 

A very simple interactive example that demonstrates how minerals are revealed using different band composites is shown bellow. Left is a RGB pseudocolor composite using Landsat 8 bands from the short wave, near-infrared, and, blue spectrum. Right is a natural color composite of the same area.

minerals example

RGB pseudocolor composite in Cuprite area, USA