Email this article 
.png)
KARAKTERISASI MINERAL IKUTAN TIMAH PADA ENDAPAN PRIMER, SEKUNDER, DAN TAILING DI BANGKA SELATAN DAN BELITUNG
Abstract
ABSTRAK
Daerah Bangka Belitung termasuk dalam sabuk timah yang merupakan intrusi pluton granit. Selain merupakan pembawa logam timah, diketahui bahwa pada batuan granit juga merupakan batuan beku pembawa mineral-mineral Rare Earth Elements (REE) seperti monasit, dan xenotim. REE memiliki nilai ekonomis yang tinggi dan peran penting dalam perkembangan teknologi baru. Penelitian ini bertujuan untuk mengetahui kelimpahan kadar, mineralogi dan ukuran butir Mineral Ikutan Timah (MIT) pada endapan primer, sekunder, dan tailing di Bangka Selatan dan Belitung. Pengambilan sampel dilakukan secara acak (grab sampling) untuk sampel endapan aluvial, koluvial, tailing, serta konsentrat dan chip sampling untuk sampel endapan primer berbentuk batuan. Sampel dikeringkan menggunakan oven, kemudian direduksi menggunakan splitter hingga memperoleh volume sampel yang sesuai. Pengayakan sampel dilakukan menggunakan 5 (lima) fraksi yaitu #+48, #+65, #+100, #+150, dan #-150 untuk memperoleh keseragaman butir sampel. Metoda analisis yang digunakan dalam penelitian ini adalah analisa radioaktif menggunakan scintillometer, mineral butir menggunakan metode grain counting, analisa mineragrafi dengan sayatan poles, serta analisa X-Ray Diffraction (XRD) berupa sampel bubuk.
Kata kunci : Mineral Ikutan Timah, Rare Earth Elements, Grain Counting, Monasit, Xenotim.
ABSTRACT
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. 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 and Belitung. 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 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.
Kata kunci : Mineral Ikutan Timah, Rare Earth Elements, Grain Counting, Monasit, Xenotim.
Full Text:
PDFReferences
Barber. (2005). Tectonic Evolution. In A. J. Barber, M. J. Crow, & J. S. Milsom, Sumatra: Geology, Resources and Tectonic Evolution (pp. 234-257). Geological Society Memoar.
Cobbing, E. J. (2005). Granite. In B. A. J, C. M. J, & M. and J.S, Sumatra: Geology, Resources and Tectonic Evolution (p. 31). Geological Society Memoir.
Crow. (2005). Pre-Tertiary Volcanic Rocks. In Barber, Crow, & Milsom, Sumatra: Geology, Resources and Tectonic Evolution (p. 31). Geological Society Memoir.
Margono, U.Supandjono, R., & Partoyo, d. E. (1995). Peta Geologi Lembar Bangka Selatan. Bandung: Puslitbang Geologi.
Osberger. (1965). Geology of Bangka. Mining Geology Note, 36.
Adam, J. W. (1960). On the Geology of the Primary Tin-ore Deposits in the Sedimentary Formation of Billiton. Geologic Mijnb Vol. 39, 405-426.
Aleva, G. J. (1960). The Plutonic Igneous Rocks from Billiton, Indonesia. Geologic Mijnb Vol. 39, 427-436.
Badan Pusat Statistik Kabupaten Belitung. (2018). Kabupaten Belitung Dalam Angka 2018. Tanjungpandan: BPS Kabupaten Belitung.
Baharuddin, & Sidarto. (1995). Peta Geologi Lembar Belitung, Sumatera. Bandung: Pusat Penelitian dan Pengembangan Geologi.
Bemmelen, R. W. (1949). The Geology of Indonesia, Vol IA, General Geology of Indonesia and Adjacent Archipelagoes. The Hague: Martinus Njhoff.
Best, M. G. (2003). Igneous and Metamorphic Petrology. UK: Blackwell Publishing.
Binder, H. H. (1999). Lexikon der chemischen Elemente. Das Periodensystem in Fakten, Zahlen und Daten. Stuttgart: Hirzel.
Cahyo, F. A. (2015). Rare Earth Mineral (REE): Masa Depan Endapan. Geopangea Research Group Indonesia.
Chappell, B. W., & White, A. J. (2001). Two Contrasting Granite Types: 25 Years Later. Australian Journal of Earth Sciences, 489-499.
Evans, A. M. (1987). Ore Geology and Industrial Minerals: An Introduction. UK: Blackwell.
Gill, R. (2010). Igneous Rocks and Processes: A Practical Guide. UK: Blackwell.
Haxel dkk. (2005). Rare Earth Elements—Critical Resources for High. US Geological Survey.
Inatadon, N. F., Abdurrachman, M., & Aziz, M. (2015). Geologi dan Studi Logam Tanah Jarang Daerah Kacang Butor dan Sekitarnya, Kecamatan Badau, Kabupaten Belitung, Provinsi Kepulauan Bangka Belitung. Seminar Nasional Kebumian Ke-8 (pp. 744-753). Yogyakarta: Academia-Industry Linkage.
Jones dkk. (1977). Age of Tin Mineralization and Plumboteetonies, Belitung, Indonesia. ECON. GEOL Vol. 72, 745-752.
Lehmann, R., & Harmanto. (1990). Large-scale Tin Depletion in the Tanjungpandan Tin Granite, Belitung Island. ECON. GEOL Vol. 85, 99-111.
Lubis, I. A. (2017). Teknik Penambangan Timah Alluvial. PT TIMAH.
Osberger, R. (1962). Geologi dari Pulau Belitung. Arnhem, Netherlands, Billiton Co., Unpub rept., 160.
Pearce, J. (1996). Sources and Setting of Granitic Rocks. Episodes, Vol. 19/4, 120-125.
Priem dkk. (1975). Isotope Geochronology in the Indonesian Tin Belt. Geologie Mijnb Vol. 54, 61-70.
Raymond, L. A. (2002). The Study of Igneous, Sedimentary, and Metamorphic Rocks. New York: McGraw-Hill.
Rohmana, & Tain, Z. (2006). Inventarisasi Bahan Galian pada Wilayah PETI Daerah Kampar, Provinsi Riau. Bandung: Pusat Sumber Daya Geologi.
Rollinson, H. R. (1993). Using Geochemical Data: Evaluation, Presentation, Interpretation. England: Pearson Education Limited.
Schwartz, M. O., & Surjono. (1990). Greisenization and Albitization at the Tikus Tin-Tungsten Deposit, Belitung, Indonesia. Economic Geology Vol. 85, 691-713.
Schwartz, M. O., & Surjono. (1990). Greisenization and Albitization at the Tikus Tin-Tungsten Deposit, Belitung, Indonesia. Economic Geology Vol. 85, 691-713.
Selley, R. C. (1976). An Introduction to Sedimentology. London: Academic Press.
Setijadji, L. D. (2011). New Insight on Granitic Rocks and Their Associated Metallogeny in Indonesia. Proceedings of the 1st Asia Africa Mineral Resources Conference 2011.
Soepriadi, K. B. (2014). Prospeksi Unsur Tanah Jarang (Rare Earth Elements) Daerah Kacang Butor dan Sekitarnya, Kecamatan Badau, Kabupaten Belitung, Provinsi Bangka Belitung. Bandung: Pusat Sumber Daya Geologi.
Suprapto, S. J. (2009). Tinjauan Unsur Tanah Jarang. Bandung: Pusat Sumberdaya Geologi.
Verdiansyah, O. (2006). Karbonatit: Petrologi dan Geologi Ekonomi. Yogyakarta: UGM.
Wentworth, C. K. (1922). A Scale of Grade and Class Terms for Clastic Sediments. The Journal of Geology, 377-392.
Article Metrics
Abstract view : 1655 timesPDF - 1605 times
Refbacks
- There are currently no refbacks.
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.