CHARACTERIZATION OF TIN ASSOCIATED MINERALS IN PRIMARY, SECONDARY AND TAILING DEPOSITS IN SOUTHERN BANGKA

• Main Author: Oza Nabilla, Amrita
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/40022
• Institution: Institut Teknologi Bandung

The Bangka Belitung area is included in a tin belt which is an intrusion of granite pluton. Besides being a tin metal carrier, it is known that in granite rocks is also igneous rock carrying minerals Rare Earth Elements (REE) such as monasite, and xenotime. In the South Bangka region, it is indicated that there is potential for REE. REE has high economic value and an important role in the development of new technologies. This study aims to determine the radioactive value, abundance of levels, mineralogy and size of associated tin minerals in primary, secondary and tailings deposits in South Bangka. Sampling was carried out by grab sampling for alluvial, colluvial, tailing sediment samples, as well as concentrates and sampling chips for rock sediments. Sampling method by Random Sampling. The number of samples is 51 samples consisting of primary, collovial, alluvial, tailing, and concentrate samples. The samples were dried using an oven, then reduced using a splitter to obtain the appropriate sample volume. Sifting the sample was carried out using 5 fractions namely #+48, #+65, #+100, #+150, and #-150 to obtain uniformity of sample items. Radioactive analysis using scintillometers, grain minerals using the grain counting method, mineragraphy analysis with polish incisions, and X-Ray Diffraction (XRD) analysis in the form of powder samples is the analysis used in this study; The results showed a high radioactive value in the cluster sample concentrate, namely monasite and zircon minerals. Rutile mineralogy is only found in alluvial, colluvial and tailing clusters.