POTENSI LOGAM TANAH JARANG DI INDONESIA
Abstract
Beberapa unsur Logam Tanah Jarang (LTJ) keterdapatannya pada kerak bumi (secara rata-rata) ternyata lebih tinggi dari unsur-unsur yang selama ini kita kenal seperti Au, Mo, As dan Be namun LTJ jarang terakumulasi dalam jumlah yang cukup ekonomis untuk ditambang.Keterdapatan LTJ umumnya berasosiasi dengan batuan asam yang alkalis yang lazim berada di lingkungan geologi kontinen. Indonesia yang terletak di lingkungan geologi yang berbeda hanya menghasilkan LTJ sebagai produk sampingan dari penambangan timah.
Salahsatu LTJ di Indonesia adalah Serium yang diketemukan di Kecamatan Parmonangan, Kabupaten Humbang Hasundutan, Provinsi Sumatera Utara menunjukkan sumber daya tereka 2.546 ton (17.481 boot bijih) dan kadar 145,8 gram/ton.
Downloads
References
Anonim, 1988, Rare earth oxides: what and where are they ?; Minerals and Ore, Australian Journal of Mining, September 1988.
Bates, R.L. and J.A. Jackson, 1980, Glossary of Geology; American Geological Institute, Falls Church, Virginia.
Endang Suwargi dan Dwi Nugroho, 1991, Hasil penelitian logam jarang di Pegunungan Tigapuluh, Riau, Direktorat Sumberdaya Mineral, 1991, Laporan Tidak Diterbitkan.
Endang Suwargi, 2009, Mengenal Rare Earth Elements (REE), edisi revisi, Bandung
Földvári-Vogl, M., 1978, Theory and Practice of Regional Geochemical Exploration; Akadémi Kiadó, Budapest, 1978.
Kamitani, M., 1989, The World Rare-Earth Resources and Their Problems; Geological Survey of Japan.
Lehman, B., 1991, “WORSKHOP ON IGNEOUS PETROGY AND GRANITE – RELATED ORE FORMATION”, SEATRAD CENTRE AND UNDP, Ipoh-Malaysia.
Muecke, G.K. and P. Möller, 1988, The Not-So-Rare Earth.
O'Driscoll, M., 1988, Rare earths, Enter the Dragon; Industrial Minerals, November 1988.
Tampubolon, A., 2009, Laporan Eksplorasi Umum Mineral Logam Langka di Kabupaten Humbang Hasundutan, Provinsi Sumut, Pusat Sumberdaya Geologi, Laporan Tidak Diterbitkan.
Umi Kuntjara, 1997, Kegunaan Unsur Tanah Jarang, Bandung.
http://en.wikipedia.org/wiki/Rare_earth_element
http://www.ggg.gl/Rare-Earth-Elements/Rare-Earth-Elements.htm&h=370&w=672&sz65&tbnid=oHsRPVRq6ywPAM:&tbnh=76&tbnw=138prev=/images%3Fq%3Drare%2Bearth%2Belements&zoom=1&q=rare+earth+elements&hl=id&usg=__UK1-0E8E3KLGQtW2_nP8quJnJ1w%3D&sa=Xei=qigITfCUG4- rrAeDgYnVDg&ved=0CDcQ9QEwAw
Copyright (c) 2019 Buletin Sumber Daya Geologi
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
Authors whose manuscripts are published agree to the following terms:
The publication rights of all journal manuscript materials published on the Buletin Sumber Daya Geologi website are held by the editorial board with the knowledge of the author (moral rights remain with the manuscript’s author).
The formal legal provisions for access to digital articles in this electronic journal are subject to the terms of the Creative Commons Attribution-ShareAlike (CC BY-SA) license. This means that Buletin Sumber Daya Geologi has the right to store, convert media/formats, manage in the form of a database, maintain, and publish the article without requesting permission from the author, as long as the author’s name is cited as the copyright holder.
Manuscripts published in both print and electronic formats are open access for educational, research, investigative, and library purposes. Beyond these purposes, the editorial board is not responsible for any violations of copyright law.
