STUDY OF SPECTROSCOPY REFLECTANCE TO EXPLORING REE-BEARING MINERALS ASSOCIATED USING REMOTE SENSING IN SOUTH BANGKA REGION, BANGKA-BELITUNG PROVINCE
As one of the region traversed by the Southeast Asian tin belt, tin potential in Indonesia has a large amount. The potential are distributed well in the main tin producing areas, one of which is Bangka Island. The presence of tin is associated with several rare earth element (REE) bearing mineral...
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| Format: | Theses |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/54415 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | As one of the region traversed by the Southeast Asian tin belt, tin potential in
Indonesia has a large amount. The potential are distributed well in the main tin
producing areas, one of which is Bangka Island. The presence of tin is associated
with several rare earth element (REE) bearing minerals such as monazite, xenotime
and zircon. Considering that REE has many benefits, it is necessary to conduct
research and mapping to determine the abundance of REE so that it can provide an
overview the potential of REE in Indonesia especially in the South Bangka region.
Mapping can be done by studying the spectral characteristics of the REE bearing
minerals as a database for use in mapping using remote sensing. This research
aims to study the spectral characteristics of REE-bearing minerals and identify
their presence and mapping the distribution of these minerals using Sentinel-2
optical imagery and Sentinel-1 SAR imagery. The mapping method used is the band
ratio, band peak, band depth and band math. In addition, several laboratory
analyzes of field samples have been carried out, such as X-ray diffraction, scanning
electron microscopy/energy dispersive X?ray spectrometry and inductively coupled
plasma-mass-spectrometry analysis. Wavelengths that are key to the presence of
major REE-bearing minerals, especially at visible – near infrared wavelengths and
several in shortwave infrared The abundance of REE is indicated by the high TREE
found in the tailings and aluvial sample at a size fraction of +150#. Band 8a on
Sentinel-2 can be the key in detecting the presence of REE because it is related to
the Nd absorption feature. Areas with high indications of REE concentrations are
distributed in open areas without vegetation, which are abandoned tin mine sites.
With the results of this study, it is expected that the existence and abundance of REE
in Indonesia, especially in the South Bangka region, can be known. |
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