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Identifikasi Batuan Sumber dan Deliniasi Sebaran Endapan Aluvial Mengandung Monasit di Kabupaten Bangka, Provinsi Kepulauan Bangka Belitung

Sukadana, I Gde (2012) Identifikasi Batuan Sumber dan Deliniasi Sebaran Endapan Aluvial Mengandung Monasit di Kabupaten Bangka, Provinsi Kepulauan Bangka Belitung. In: Seminar Nasional Pendayagunaan Iptek Nuklir, 17 Oktober 2012, PPGN - Batan.

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Abstract

Monazite (Ce, La, Th, Y (PO4)) is mineral, which has high economical value that contain radioactive and rare earth element. In Indonesia monazite formed in acid to medium igneous rocks, moderate to high degrees metamorphic rocks, sedimentary rocks especially sandstones, and alluvial deposits. This study is purpose to observe the source rocks and alluvial deposit that have possibility to contain monazite mineral in Bangka Region by geological mapping and rock/soil radioactivity measurement on 1:50.000 map scale, continued with heavy minerals and rock sampling for geochemical and petrography analysis. Geologically of Bangka-Belitung that composed by Klabat Granite, Tanjunggenting Sandstone and Alluvial deposits. Based on petrography analysis result shown that granite compose by quartz, plagioclase, k-feldspar, muscovite, monazite, zircon, biotite, serisite, chlorite, opaque minerals, and iron oxidized. Radioactivity measurement result shown of Pemali Complex Unit with radioactivity measured 35c/s – 290c/s, Tanjunggenting Sandstone Unit with radioactivity measured 40c/s – 75c/s, Klabat Granite Unit with radioactivity measured 200c/s – 600c/s, Ranggam clay-sand unit with radioactivity 75-125 c/s, and Alluvium deposits Unit with radioactivity measured 20c/s – 200c/s. According the result of radioactivity measurement, geochemical analysis shown the alluvial deposit that contain monazite is the alluvial deposits which correlated or spreading around the source rock (granite)

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Monazite, source rock, Alluvial, Bangka
Subjects: Daur Bahan Bakar Nuklir dan Bahan Maju > Bahan Galian Nuklir > Teknik Eksplorasi Bahan Galian Nuklir
Divisions: Pusat Teknologi Bahan Galian Nuklir
Depositing User: USER PTBGN BATAN
Date Deposited: 04 May 2018 09:50
Last Modified: 04 May 2018 09:50
URI: http://repo-nkm.batan.go.id/id/eprint/934

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