DISTRIBUTION PATTERNS AND RELATIONSHIPS OF ALLUVIAL TIN DEPOSITS AND RARE EARTH ELEMENTD IN AIR BIAT AREA, WEST BANGKA
The need for tin and its associated minerals is needed in this technological era. The need for tin and its associated minerals such as rare earth elements has increased, making the search for tin resources and rare earth elements increasing. One of the explorations for tin and rare earth eleme...
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| Format: | Final Project |
| Language: | Indonesia |
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| Online Access: | https://digilib.itb.ac.id/gdl/view/75921 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | The need for tin and its associated minerals is needed in this technological era. The
need for tin and its associated minerals such as rare earth elements has increased,
making the search for tin resources and rare earth elements increasing. One of the
explorations for tin and rare earth elements is through secondary enrichment. This
secondary enrichment is due to the process of erosion and transport of tin ore minerals
and rare earth elements in the fluvial process. In the Air Biat area, West Bangka, there
are seincreasing the search for tin resources and rare earth elements earth elements
in certain sediment layers. The location of the core drilling data is in the fluvial area
near the granite hill, Bukit Menumbing, which has tin enrichment mineralization. In
this study analysis of placer sediment samples was performed on three-grain size
fractions, namely the +48-mesh fraction (297-354 ?m), the +100-mesh fraction (149
?m), and the -100-mesh fraction (<149 ?m). The rare earth elements (REEs) are
lanthanum and cerium. From the analysis results, it can be concluded that the
correlation of the presence of tin, lanthanum, and cerium shows a strong association
between the fractions. The correlation between the presence of tin and cerium in each
fraction shows a moderate association. The correlation between the presence of tin and
lanthanum in each fraction shows a moderate association. The correlation between the
presence of lanthanum and cerium in each fraction shows a strong association. In this
study, one kaksa deposit and four mincan deposits were found at a depth of 35 m to 50
m from the ground surface. Kaksa and mincan have a melensa distribution pattern.
The presence of tin and REEs is generally found in cashier clastic sediments, namely
gravel, gravel, and coarse sand. The threshold values for tin, cerium, and lanthanum
are 16218 ppm, 1258.93 ppm and 1513.56 ppm respectively. The range of tin,
lanthanum and cerium values are 15.7 – 17847 ppm, 80.25 – 5671 ppm and 120.05 –
5804 ppm, respectively. |
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