ALTERATION AND MINERALIZATION STUDIES IN THE JEBLOGAN AREA, KARANGTENGAH, WONOGIRI, CENTRAL JAVA

  • Awang Subang Negara Universitas Pembangunan Nasional "Veteran" Yogyakarta
DOI: https://doi.org/10.33579/krvtk.v9i1.4687
Keywords: Hydrothermal Alteration, Karangtengah, Mineralization, Wonogiri

Abstract

The research area is located in Jeblogan, Karangtengah, Wonogiri, Central Java. This study aims to investigate the hydrothermal alteration and mineralization. Geological structures present in the research area include faults and fractures. These faults are well-developed trending NE-SW, NW-SE, and N-S as pathways for fluid ascent to the surface, thereby influencing alteration patterns. Mineral alteration assemblages in the research area, based on petrographic, mineragraphy, and XRD analysis, result from hydrothermal processes and include mineral assemblage zones such as Quartz ± Silica ± Pyrite, Alunite + Pyrophyllite ± Zunyite ± Quartz ± Hematite, Illite + Halloysite ± Smectite ± Kaolinite ± Quartz, and Chlorite + Calcite + Epidote ± Pyrite. Mineralization found in the research area includes Chalcopyrite, Sphalerite, Pyrite, Chalcocite, and Galena. Based on the characteristic parameters of the deposit type and laboratory analysis, the deposit type at the research location is low-sulfidation epithermal deposit and intermediate-sulfidation deposit.

Downloads

Download data is not yet available.

References

[1] R. Abdissalam, S. Bronto, A. Harijoko, dan A. Hendratno, “Identifikasi Gunung Api Purba Karangtengah di Pegunungan Selatan, Wonogiri, Jawa Tengah,” Jurnal Geologi Indonesia, 4, 235-267, 2009.
[2] C. Abdullah, N. Magetsari, dan H. Purwanto, “Analisa Dinamik Tegasan Purba pada Satuan Batuan Paleogen-Neogen di Daerah Pacitan dan Sekitarnya, Provinsi Jawa Timur Ditinjau dari Studi Minor dan Kekar Tektonik,” Prosiding ITB Sains dan Teknologi. 35A (2), pp. 111-127. Bandung: Institut Teknologi Bandung, 2003.
[3] G. Corbett, “Epithermal Gold for Explorationists,” Australian Institute of Geoscientist Journal - Applied Geoscientific Practice and Research in Australia, 2002.
[4] G. Corbett, and T. M. Leach, “Southwest Pacific Rim Gold-Copper System: Structure, Alteration, Mineralization,” Colorado, USA: Society of Economic Geologist, Inc, 1998.
[5] J. Craig, and D. Vaughan, Ore Microscopy and Ore Petrography, Canada: Jhon Wiley and Sons, Inc. 1994.
[6] J. B. Gemmell, “Low and Intermediate sulfidation Epithermal Deposits,” Center of Ore Deposit Research. University of Tasmania, 2004.
[7] J. Hedenquist and B. Haughton, “Epithermal Gold Mineralisation and its Volcanic Environment,” Sydney: The Foundation, 1987.
[8] J. Hedenquist and N. White, “Epithermal Gold Deposits: Style, Characteristic, and Exploration,” Society of Economic Geology Newsletter , 23, 1-13, 1995.
[9] Sandi Stratigrafi Indonesia, Komisi Sandi Stratigrafi Indonesia, Jakarta: Ikatan Ahli Geologi Indonesia, 1996.
[10] J. Lowell and J. Guilbert, “Lateral and Vertikal Alteration-Mineralization Zoning in Phorpyry Ore Deposits,” Economic Geology Vol. 65, 373-408, 1970.
[11] D. Marshall, C. D. Anglin, and M. Hamid, Ore Mineral Atlas, Newfoundland, Geological Association of Canada – Mineral Deposits Division, 2004.
[12] H. Samodra, S. Gafoer, dan S. Tjokrosapoetro, Geologi Lembar Pacitan, Bandung, Indonesia: Pusat Penelitian dan Pengembangan Geologi, 1992.
[13] R. H. Silitoe and W. Hedenquist, “Linkages between Volcanotectonic Settings, Ore-Fluid Compositions, and Epithermal Precious Deposits,” Society of Econoc Geologists, 2003.
[14] R. H. Sillitoe, “Styles of High-Sulphidation Gold, Silver and Copper Mineralisation in Porphyry and Epithermal Environments,” Pacrim’99, Bali Indonesia, 1999.
[15] R. H. Sillitoe, “Porphyry Copper Systems,” Society of Economic Geologists, Inc, 2010.
[16] R. H. Sillitoe, “Epithermal Paleosurface,” Mineralium Deposita, International Jurnal of Geology, Mineralogy and Geochemistry of Mineral Deposit, 767-793, 2015.
[17] R. Soeria-Atmadja, R. Maury, H. Bellon, H. Pringgoprawiro, M. Polve, M, and B. Priadi, “Tertiary Magmatics Belts In Java,” Journal of Southeast Asia Earth Science Vol. 9(1-2), 13-27, 1994.
Published
2024-04-17
How to Cite
[1]
A. S. Negara, “ALTERATION AND MINERALIZATION STUDIES IN THE JEBLOGAN AREA, KARANGTENGAH, WONOGIRI, CENTRAL JAVA”, Journal Technology of Civil, Electrical, Mechanical, Geology, Mining, and Urban Design, vol. 9, no. 1, pp. 73-82, Apr. 2024.
Issue
Vol 9 No 1 (2024): Energy Management and Sustainable Environment
Section
Articles

Copyright (c) 2024 Awang Negara

Creative Commons License

This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.

This journal provides immediate open access to its content on the principle that making research freely available to the public supports a greater global exchange of knowledge.

All articles published Open Access will be immediately and permanently free for everyone to read and download.  We are continuously working with our author communities to select the best choice of license options, currently being defined for this journal as follows:
• Creative Commons Attribution-ShareAlike (CC BY-SA)

Creative Commons License
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.