KONTROL STRUKTUR GEOLOGI PADA ALTERASI DAN MINERALISASI DI DAERAH CIBALIUNG, KABUPATEN PANDEGLANG, PROVINSI BANTEN

CONTROL OF GEOLOGICAL STRUCTURE ON ALTERATION AND MINERALIZATION IN CIBALIUNG AREA, PANDEGLANG REGENCY, BANTEN PROVINCE

  • Abdul Bari
  • Mega Fatimah Rosana
  • Iyan Haryanto
Keywords: vein, structure, alteration, mineralization, prospect, Cibaliung

Abstract

Cibaliung is located in the Honje Igneous Complex, which is a Miocene volcanic complex, having two economically mineable quartz veins, i.e. Cikoneng and Cibitung veins. These veins have been mined and produced by PT Cibaliung Sumber Daya - subsidiary of PT Aneka Tambang Tbk. In the production process, the veins have reached the maximum limit.  Therefore, a new reserve must significantly be discovered.  The research methodology includes observation of geological structures with topographic lineament analysis, circular feature, river lineament analysis using Digital Elevation Model, and measurement of brecciation structure, shear fracture and gash fracture. The results of field data interpretation from 328 observation locations with 8,114 geological structure data both for shear fracture and gash fracture show that the presence of geological structures  is directly proportional to the intensity of alteration and mineralization. From the structural and fault movement analysis and the correlation with mineralization and alteration data, there can be delineated 14 prospect areas, namely the Cikoneng-Cibitung, Cibengang, Rorah Kadal, Cikeni, Ramada, Mastar, Muara Cikeni, Cipatat, Ciburial, Cikamancing, Sompok Uara, North Batulawang, Cikarae-Cingenge, and Ciparay Prospects. From these prospects, it is recommended to conduct further exploration on six prospects, namely Cibengang, Ramada, West Cikoneng, Cikamancing, North Sompok and the North Batulawang Prospects.

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Author Biographies

Abdul Bari

Fakultas Teknik Geologi Universitas Padjadjaran

PT Aneka Tambang Tbk.

Mega Fatimah Rosana

Fakultas Teknik Geologi Universitas Padjadjaran

Iyan Haryanto

Fakultas Teknik Geologi Universitas Padjadjaran

References

Angeles, C.A., Prihatmoko, S., and Walker, J.S. (2002): Geology and Alteration-Mineralization Characteristics of the Cibaliung Epithermal Gold Deposit, Banten, Indonesia. Resource Geology,52 (4), 329 – 339.

Atmadja, R, S., dan Noeradi, D. (2006): Distribution of Early Tertiary volcanic rocks in south Sumatra and west Java, The Island Arc 14, 679 – 686.

Carlile, J.C. dan Mitchel. (1994): Magmatic arcs and associated gold and copper mineralization in Indonesia. Journal of Geochemical Exploration, 50, 91 – 142.

Handayani, L., dan Harjono, H. (2008): Perkembangan Tektonik Daerah Busur Muka Selat Sunda dan Hubungannya dengan Zona Sesar Sumatera, Jurnal Riset Geologi dan Pertambangan, Jilid 18 No.2, 31 –40.

Harding, T.P. (1985): Seismic Characteristics and Identification of Negative Flower Structures, Positive Flower Structures, and Positive Structural Inversion. Bulletin of the American Association of Petroleum Geologists, 69(4), 582 – 600.

Harijoko, dkk. (2007): Characteristics of the Cibaliung Gold Deposit: Miocene Low‐Sulfidation‐Type Epithermal Gold Deposit in Western Java, Indonesia. Resource Geology Vol. 57 No.2, 114-123.

Hedenquist, J. W. (1996): Epithermal Gold Deposit: styles, characteristics, and Exploration. Resources Geology Special Publication Number 1.

Hilmi, F., dan Haryanto, I. (2008): Pola Struktur Regional Jawa Barat, Bulletin of Scientific Contribution, Vol 05 No 01, 57 – 66.

Kurniawan, A., dkk. (2012): Internal Report Tim Eksplorasi Emas Unit Geomin, PT Antam Tbk.

Marcoux, E. and Milesi, J.P., (1994):Epithermal gold deposit in West Java, Indonesia: Geology, age and crustal source. In: van Leeuwen, T.M., Hedenquist, J.W., James, L.P., and Dow, J.A.S. (eds.), Indonesian mineral deposits: Discoveries of the past 25 years. Journal of Geochemical Exploration. 50, Amsterdam, p.393-408. DOI: 10.1016/0375-6742(94)90033-7

McClay, K.R. (1987): The Mapping of Geological Structure, London, 161 halaman.

Sudana, D. dan Santosa, S. (1992): Geology of the Cikarang Quadrangle, Java, Pusat Penelitian dan Pengembangan Geologi, Bandung, 13.

Usman, D.N., Sulaksana, N., Hirnawan, F., Haryanto, I., dan Bahri, N.S. (2017): Analisis Struktur Kekar Zona Mineralisasi Emas Miosen Akhir. Prosiding SNaPP2017 Sains dan Teknologi, Vol 7 No.2.

Usman, D.N., Sulaksana, N., Hirnawan, F., dan Haryanto, I. (2018): Gold-Silver Mineralization in the Neo-Tectonism of Honje Formation and Cipacar Formation, in Cibaliung Block, Banten Province. Journal of Geoscience Engineering, Environment, and Technology, Vol 03 No 04.

Published
2020-08-23
Section
Buletin Sumber Daya Geologi