PENENTUAN DAERAH PROSPEK MINERALISASI MENGGUNAKAN METODE GEOKIMIA TANAH, DAERAH NANGA BANGIK, KECAMATAN BOYAN TANJUNG, KABUPATEN KAPUAS HULU, PROVINSI KALIMANTAN BARAT
DETERMINATION OF MINERALIZATION PROSPECTS BY SOIL GEOCHEMISTRY METHOD IN NANGA BANGIK AREA, BOYAN TANJUNG DISTRICT, KAPUAS HULU REGENCY, WEST KALIMANTAN PROVINCE
Abstract
The tropical climate of Indonesia causes rock weathering. Soil from weathered rocks can be analyzed to determine the anomalies element to define the mineralization prospect areas using the geochemical methods. This study was carried out in the Nanga Bangik area with geological conditions favorable for mineralization.
A total of 135 soil samples were collected from horizon B along ridge and spurs with sample intervals 75 - 100 meters. All samples were analyzed at the laboratory of the Center for Mineral Coal and Geothermal Resources in Bandung. Geochemical analysis was conducted using the Atomic Absorption Spectroscopy method, for the elements of Cu, Pb, Zn, Fe, Mn, Ag, and Au. Statistical distribution analysis, threshold calculation using mean+2SDEV and Median+2MAD and correlation between Factor Analysis were combined to determine the anomalies areas.
Based on the calculation of the threshold using two different statistical methods, several anomalous values and groups of three factors were obtained: Factor 1: Pb-Fe-Zn-Ag Factor 2: Mn-Cu and Factor 3 in the form of element Au which was interpreted by the presence of metal mineralization. Three mineralization prospect areas were found in Bukit Empajak, Bukit Pirang and Bukit Limau.
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References
Bradshaw, P.M.D., Lett, R.E.W. 1980. Geochemical exploration for uranium using soils.J. Geochem. Explor. 13, 305–319.
Carranza, E.J.M. 2008. Geochemical Anomaly and Mineral Prospectivity Mapping in GIS. Handbook of Exploration and Environmental Geochemistry, vol. 11. Elsevier, Amsterdam.
Carroll, J.B. 1953. An analytic solution for approximating simple structure in factor analysis. Psychometrika 18, 23–38.
Closs LG, Nichol I. 1975. The role of factor and regression analysis in the interpretation of geochemical reconnaissance data. Can J of Ear Sci 12: 1316-1330.
Garrett RG, Kane VE, Zeigler K. 1980. The management and analysis of regional geochemical data. J Geochem Explore 13:115-152.
Grunsky, E.C. 2010. The interpretation of geochemical survey data. Geochem. Explor. Environ.Anal. 10, 27–74.
Harman, H.H. 1976. Modern Factor Analysis, 3rd edition. University of Chicago Press, Chicago.
Hawkes, H.E., Webb, J.S. 1962. Geochemistry in Mineral Exploration. New York 7 Harper.
Hendrickson, A.E., White, P.O. 1964. PROMAX: a quick method for rotation to oblique simple structure. Br. J. Stat. Psychol. 17, 65–70.
Joseph, I., Bhaumik, B.K. 1997. Improved estimation of the Box-Cox transform parameter and its application to hydrogeochemical data. Mathematical Geology 29(8): 963-976.
Kaiser, H.F. 1958. The Varimax criterion for analytic rotation in factor analysis. Psychometrika 23, 187–200.
Kisman, Bambang Pardiarto. 2015. Eksplorasi Umum Emas dan Mineral Ikutannya di Kecamatan Boyan Tanjung Kabupaten Kapuas Hulu Provinsi Kalimantan Barat. Pusat Sumber Daya Geologi. Bandung.
Kisman, Ernowo, Sulaeman. 2018. Prospeksi Lanjut Mineral Logam Di Daerah Nanga Bangik dan Sekitarnya Kecamatan Boyan Tanjung Kabupaten Kapuas Hulu Provinsi Kalimantan Barat. Pusat Sumber Daya Mineral Batubara dan Panas Bumi. Bandung.
Laurent M, Robin OP, Jean-Pierre T. 2010. Multivariate statistikal analysis of trace elements in soil on Spoil Heap, South East Congo-Brazzaville. African Journal of Basic and Applied Sciences 2: 81-88.
Miesch, A.T. 1977. Log-transformation in geochemistry. Mathematical Geology 9(2): 191-194.
Pieters, P.E., Surono dan Y. Noya, T.O. 1993. Peta Geologi Lembar Putissibau, Kalimantan, skala 1 : 250.000. Pusat Penelitian dan Pengembangan Geologi. Bandung.
Reimann, C., Filzmoser, P. 1999. Normal and lognormal data distribution in geochemistry: death of a myth. Consequences for the statistikal treatment of geochemical and environmental data. Environmental Geology 39(9): 1001-1014.
Reimann, C., Filzmoserb, P., Garrett, R.G. 2002. Factor analysis applied to regional geochemical data: problems and possibilities. Appl. Geochem. 17, 185–206.
Reimann, C., Filzmoserb, P., Garrett, R.G. 2005. Background and threshold: critical comparison of methods of determination. Sci. Total Environ. 346, 1–16.
Rose, A. W., Hawkes. H. E., Webb. J. S. 1979. Geochemistry in Mineral Exploration. 2nd edn. London: Academic Press.
Vistelius, A.B. 1960. The skew frequency distributions and the fundamental law of the geochemical processes. Journal of Geology 68(1):1-22.
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