The Occurences of Heavy Mineral Placer at Kendawangan and Its Surrounding, West Kalimantan Province

Agus Setyanto, Maman Surachman

Abstract


The main objective of this study is to identify and to determine the variation and content of heavy mineral placer of Kendawangan coastal, offshore and its surrounding area. Sediment samples were taken from 18 locations, such as 12 samples from offshore and 6 samples from coastal area. For this analysis the heavy metals were identified and analyzed using isodynamic separator and binocular microscopic. The result indicates that heavy minerals consist of zircon, cassiterite, rutile, ilmenite, topaz, chalcopyrite, epidote, pyrite, hematite, hornblende and magnetite. Cassiterite and zircon are also found in sediment samples in all locations and potentially to be further developed. 

Keywords: Heavy minerals placer, Zircon, Cassiterite, Kendawangan, West Kalimantan

 

Tujuan penelitian ini adalah untuk mengidentifikasi dan menentukan variasi kandungan mineral berat plaser pada sedimen pantai dan lepas pantai Kendawangan dan sekitarnya. Sampel sedimen diambil dari 18 lokasi yang terdiri atas 12 sampel sedimen lepas pantai dan 6 sampel sedimen pantai. Analisis dilakukan dengan menggunakan isodinamik separator dan mikroskop binokular. Hasil analisis menunjukkan bahwa mineral berat terdiri atas zircon, kasiterit, rutil, ilmenit, topas, kalkopirit, epidot, pirit, hematit, hornblende, dan magnetit. Kasiterit dan zircon juga dijumpai pada sampel sedimen di semua lokasi yang dianalisis dan berpotensi untuk dikembangkan lebih lanjut. 

Kata kunci: Mineral berat plaser, Zirkon, Kasiterit, Kendawangan, Kalimantan Barat


Keywords


Heavy minerals placer; Zircon; Cassiterite;Kendawangan;West Kalimantan

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References


Basu, A., Molinaroli, E., 1989. Provenance characteristics of detrital opaque Fe-Ti oxide minerals: Journal of Sedimentary Research 59, 922-934.

Bateman, R.M. & Catt, J.A. 2007. Provenance and Paleo environment Interpretation of Superficial Deposits, With Particular Reference to Post-Depositional Modification of Heavy Mineral Assemblages. In: Mange M.A & Wright D.T. eds. Heavy Mineral in Use, Development in Sedimentology 58, pp. 151-188. Elsevier, Amsterdam.

Berger, B.R., Ayuso, R.A., Wynn, J.C., and Seal, R.R., 2008. Preliminary model of porphyry copper deposits: U.S. Geological Survey Open-File Report 2008–1321, 55 p.

Boggs Jr., Sam., 1992. Petrology of Sedimentary Rocks, New York : Macmillan Publishing Company.

Friedman, G.M. and Sanders, J.E., 1987. Principles of Sedimentology. John Wiley & Sons, 792 p.

Herman, D.Z., 2007. Kemungkinan sebaran zirkon pada endapan placer di Pulau Kalimantan. Jurnal Geologi Indonesia, Vol. 2 No. 2 Juni 2007: 87-96.

Jensen, M.L and Bateman, A.M, 1981. Economic Mineral Deposits. John Wiley & Sons, New York, 593 pages.

Morton, A.C. & Hallsworth, C. 1999. Processes Controlling The Composition of Heavy Mineral Assemblages in Sandstones. Sedimentary Geology 124, 3-29.

Morton and Chenery, 2009. Detrital Rutile Geochemistry and Thermometry as Guides to Provenance of Jurassic-Paleocene Sandstones of the Norwegian Sea. Journal of Sedimentary Research, July 1, 2009; 79(7): 540 - 553.

Pickard, 1967. Descriptive Physical Oceanography.An Introduction. Pergamon Press. Oxford. 200 p.

Setyanto, Agus., Surachman M, Mustofa Akrom, and Hersenanto C.W., 2015. Penelitian Tinjau Endapan Plaser Pembawa Unsur Tanah Jarang (REE) Perairan Kendawangan, Kabupaten Ketapang, Propinsi Kalimantan Barat. P3GL, Bandung, 2015. Internal report (unpublished).

Rustandi E., and de Keyser, 1993. ”Peta Geologi Lembar Ketapang Lembar 1414, Skala 1:250000”. Pusat Pengembangan dan Penelitian Geologi (PPPG) Departemen Pertambangan dan Energi, Bandung. Internal report (unpublished).




DOI: http://dx.doi.org/10.32693/bomg.32.1.2017.319