Karakteristik Cebakan Bauksit Laterit Di Daerah Sepiluk - Senaning, Kabupaten Sintang, Kalimantan Barat

Authors

  • Eko Yoan Toreno Pusat Sumber Daya Geologi Author
  • Moe'tamar Moe'tamar Pusat Sumber Daya Geologi Author

DOI:

https://doi.org/10.47599/bsdg.v7i2.102

Keywords:

bauksit, laterit, Sepiluk-Senaning, gibsit, felspar, cliachit

Abstract

Keberadaan bauksit laterit di daerah Sepiluk-Senaning, Kabupaten Sintang, Kalimantan Barat terbentuk pada kemiringan lereng 10° s.d. 14°. Batuan asal yang terdapat di daerah ini adalah batuan gunungapi pra-Tersier dengan jenis fonolit kaya akan kandungan unsur aluminium dengan mineral gibsit, felspar dan cliachit yang mudah larut kemudian mengalami proses laterisasi. Penyelidikan bauksit didaerah ini dilakukan dengan channel sampling pada sumur uji dengan ketebalan rata-rata bauksit laterit sebesar 2,6 m dan pengambilan conto sebanyak 39.Hasil korelasi antara penampang sumur uji, memperlihatkan penyebaran bauksit lateritmenipis ke arah tenggara-baratlaut. Berdasarkan hasil analisis kimia terhadap conto laterit diperoleh kadar rata-rata 52,64 % Al O ; 3,60% SiO ; 9,83 % Fe O dan 1,34 % TiO dengan faktor konkresi 0,58 %.

References

Anonim 2011, Eksplorasi Umum Bauksit di Kabupaten Sintang, Provinsi Kalimantan Barat, Pusat Sumber Daya Geologi.

Anonim 2007, Inventarisasi Dan Penyelidikan Mineral Dan Batubara Daerah Perbatasan Sintang, Provinsi Kalimantan Barat Dengan Malaysia, Pusat Sumber Daya Geologi.

Anonim 2000, Tata Cara Pembuatan Sumur Uji Secara Manual (SNI 03-6376-2000), Badan Standarisasi Nasional.

Anonim 1999, Penentuan Faktor Konkresi Bijih Bauksit (SNI 13-6179-1999), Badan Standarisasi Nasional.

Anonim 1994, Laporan Eksplorasi ANTAM, Daerah KP DU. 1144/KALBAR, Kabupaten Sanggau, Kalimantan Barat, PT. ANTAM.

Anonim 1974,On The Establishment of Bauxite Mining Alumina Refining and Aluminum Smelting Enterprises in Indonesia, Volume I & II, PT. Alcoa Mineral of Indonesia.

Casimiro and d'Avila, 1975, Laterite Type Bauxite and Clayed Bauxite in Municipio de Lajes, Santa Catarina.

Eggleton, R. A. (ed.) 2001,The Regolith Glossary: surficial geology, soils and landscapes. CRC LEME, Wembley.

Heryanto. R, Harahap. B.H, Sanyoto.P, Williams.P.R, Pieters.P.E,1993; Geologi Lembar Sintang, Kalimantan, Skala 1 : 250.000, Puslitbang Geologi, Bandung.

Winchester, J.A., Floyd, P.A., 1977. Geochemical discrimination of different magma series and their differentiation products using immobile elements. Chemical Geology 20, page 325-344.

Downloads

Published

2012-08-08

Issue

Vol. 7 No. 2 (2012): Buletin Sumber Daya Geologi

Section

Buletin Sumber Daya Geologi

License

Authors whose manuscripts are published in Buletin Sumber Daya Geologi agree to the following terms:

  1. Publication rights to all published materials are held by Buletin Sumber Daya Geologi with the knowledge of the authors, while the moral rights remain with the authors.
  2. All articles are published under the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License (CC BY-NC-SA 4.0).
  3. Under this license, anyone may copy, redistribute, and adapt the work for non-commercial purposes, provided that appropriate credit is given to the authors and the journal, a link to the license is provided, any changes are indicated, and adapted works are distributed under the same license.
  4. Commercial use of the published material requires written permission from the publisher.
  5. Authors may deposit the published version of their article in institutional repositories, personal websites, or academic networks, provided that the original publication in Buletin Sumber Daya Geologi is acknowledged with its DOI.