MINERAL POTENTIAL MAPPING USING GEOGRAPHIC INFORMATION SYSTEMS (GIS) FOR GOLD MINERALIZATION IN WEST JAVA, INDONESIA

Seang Sirisokha; Lucas Donny Setijadji; I Wayan Warmada

doi:10.22146/jag.26980

MINERAL POTENTIAL MAPPING USING GEOGRAPHIC INFORMATION SYSTEMS (GIS) FOR GOLD MINERALIZATION IN WEST JAVA, INDONESIA

https://doi.org/10.22146/jag.26980

Seang Sirisokha^(1*), Lucas Donny Setijadji⁽²⁾, I Wayan Warmada⁽³⁾

(1) Geo-resources and Geotechnical Engineering, Institute of Technology of Cambodia
(2) Geological Engineering Department, Faculty of Engineering, Gadjah Mada University
(3) Geological Engineering Department, Faculty of Engineering, Gadjah Mada University
(*) Corresponding Author

Abstract

Western Java is a part of the Sunda Banda magmatic belt. This belt is well known to be host for several gold deposits in Indonesia, the distribution of 107 Au occurrences in this area was examined in terms of spatial association with various geological phenomena. The goal of this project is to use GIS to conduct weights of evidence (WofE) model for gold mineralization in West Java, Indonesia. A Geographic Information System (GIS) is a computer system for capturing, storing, querying, analyzing, and displaying geospatial data and weight of evidence method is one of the most important datadriven methods for mapping in GIS. The method is a probability based on technique for mapping mineral potential using the spatial distribution of known mineral occurrences. Therefore this method is very useful for gold potential mapping. There are six evidences maps such as NE–SW lineaments NW–SE Lineament, host rocks, heat sources, clay alteration and limonitic alteration, have been combined using a weights of evidence model to predict gold potential in West Java. The best predictive map generated by this method deﬁnes 21.62% (9902 km) of study area as favourable zones for gold mineralization further exploration work. It predicts correctly 74 (92.5%) of the 80 model deposits and predicts correctly 26 (96.35%) of the 27 validation deposits, has 6 main 2 prospective target for future exploration are located in Bayah Dome, southern mountain, Honjie Igneous Complex and Bogor zone, Purwakarta. Bayah Dome is highest potential area for gold deposit like Gunung Pongor, Cikidang, Cirotan, Ciawitali, Cikotok destricts and other deposits. The potential area of Au occurrences in research area is associated with NE–SW and NW–SE structure/ lineaments, dominated surrounding the Tertiary intrusive rock unit and hosted in Miocene to Pleistocene lithology rock unit.

Keywords

GIS, Weight of evidence method, Mineral potential mapping, Bayah Dome, Bogor, West Java

Full Text:

PDF

References

Alzwar, M., Akbar, N., and Bachri, S. (1992) Systematic geological map. International Journal of Remote Sensing, 21, pp. Indonesia, quadrangle Graut 1208-6 and Pameungpeuk 12083, scale 1: 100.000, Geological Research and Development Center, Bandung. Basuki, N.I., Prihatmoko, S., and Suparka, E. (2012) Gold mineralization systems in Southern Mountain Range, West Java. Proceedings of Banda and Eastern Sunda Arcs 2012 MGEI Annual Convention 26-27 November 2012, Malang, East Java, Indonesia. Bonham-Carter, G., Wright, D., and Agterberg, D. (1989) Weights of evidence modeling with GIS: A new approach to mapping mineral deposits. Geological Survey Canada Paper, 899: 171–183.Carranza, E.J.M. (2002) Geologically- constrained Mineral Potential Mapping. PhD Thesis, Delft University of Technology, The Netherlands, 480p. Carranza, E.J.M. (2003) Practical Exercise: Weight of Evidence Modeling for Mineral Potential Mapping. MREE Elective Module 9, 29pp. Claproth, R. (1989) Petrology and Geochemistry of Volcanic Rocks from Ungaran, Central Java, Indonesia. Doctor of Philosophy Thesis, Department of Geology, University of Wollongong. Idrus, A., Fadlin, Putri, R.I. and Hatmanda, M. (2013) Styles and Characteristics of Precious and Base Metal Mineralization at the Southern Part of West Java Region, Indonesia, The 5th AUN/SEED-Net Regional Conference on Geological Engineering 15-16 January 2013, Kuala Lumpur, Malaysia. Marcoux, E., and Mil´esi, J.P. (1994) Epithermal gold depositsin West Java, Indonesia: geology, age and crustal sources: in van Leeuwen, T.M., Hedenquuist, J.W., James, L.P., and Dow, J.A.S., eds., Mineral deposits in Indonesia, Discoveries of the Past 25 years: Journal of Geochemical Exploration, v. 50, pp. 393408. Martodjojo, S., 1984, Evolusi Cekungan Bogor, Jawa Barat, Doctoral Dissertation, Department of Geology, Institut Teknologi Bandung, Bandung, 355p. Mil´esi, J.P., Marcoux, E., Nehlig, P., Sunarya, Y., Sukandar, A., and Felenc, J. (1994) Cirotan, West Java, Indonesia: a 1.7 Ma hybrid epithermal Au–Ag–Sn–W deposit. Economic Geology 89: 227– 245. Mil´esi, J.P., Marcoux, E., Sitrous, T., Simandjuntak, M., Leroy, J., and Baily L. (1999) a Pliocene supergene-enriched epithermal AuAg-(Mn) deposit. Mineral deposita 34: 131149. Setijadji, L.D., Kajino, S., Imai, A., and Watanabe, K. (2006) Cenozoic island arc magmatism in Java Island (Sunda Arc, Indonesia): Clues on relationships between geodynamics of volcanic centers and ore mineralization. Resource Geology Smyth, H. R, Hall, R., Hamilton, P.J., and Kinny,P. (2005) East Java: Cenozoic basins, volcanoes and ancient basement. Jakarta Proceedings, Indonesian Petroleum Association Annual Convention, 30th, pp. 251–266. Suparka, E., Aziz, M., Abdullah, C.I., and Suparka, 2007. Mineralization of Cu-Au porphyry deposits in Cihurip and Surrounding area, Garut Regency, West Java. Joint Convention The 36 IAGI Annual Convention and Exhibition, Bali. th Syafrizal, Indriati, T., Heriawan, M.N., Hede, A., N., H., Hutabarat, Y., and Saing, S., (2011) Base-metal and gold mineralization in Jampang Complex, Cigaru Local Mine, West Java, Indonesia, Proceedings of the 1st Asia Africa Mineral Resources Conference 2011, Fukuoka, Japan. Soeria-Atmadja, R. Maury, R. C., Bellon, H.,Pringgoprawiro, H., Polves, M. and Priadi, B. (1994) Tertiary magmatic belts in Java. Journal of Southeast Asian Earth Science 9: 13–27. Subandrio, A.S, and Basuki, N.I. (2010) Alteration and vein textures associated with gold mineralization at the Bunikasih Area, Pangalengan, West Java, Jurnal Geologi Indonesia, v. 5(4), pp. 247-261. Utoyo, H. (2007) Alteration and mineralization of ancient caldera in Cupunagara, Subang, West Java. Proceedings Joint Convention Bali 2007, The 32nd HAGI, The 36th IAGI, And The 29th IATMI Annual Conference And Exhibition. van Bemmelen, R.W. (1949) The Geology of Indonesia. V.F.A. Govermment. Printing ofﬁce. The Hague, 732p.

DOI: https://doi.org/10.22146/jag.26980