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Pemodelan Geologi dan Estimasi Sumberdaya Uranium Di Sektor Lemajung, Kalan, Kalimantan Barat

Syaeful, Heri and Suharji, suharji and Sumaryanto, Agus (2014) Pemodelan Geologi dan Estimasi Sumberdaya Uranium Di Sektor Lemajung, Kalan, Kalimantan Barat. In: Seminar Nasional Teknologi Energi Nuklir 2014, 19 Juni 2014, Pontianak.

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Abstract

In 2013 core drilling carried out in Lemajung Sector for 5 drill hole with a depth of 300 meters each. Target of drilling is to determine and verify the horizontal and vertical extension of uranium mineralization. The uranium mineralization in Lemajung contained in favorable layer of metasiltstone and schistose metapelite in between the sterile layer of andalusite metapelite and biotite metapelite. The purpose of this research is to construct geological models of ore and re-evaluation of uranium resources in Lemajung. Geological modeling and resource estimation performed by Surpac software program. In the early stages database compiled based on 42 core drilling and 7 non-core drilling. Grade and thickness of mineralization plane resulted from gamma ray log interpretation using the total area method. Ore body as much as 51 pieces obtained from the correlation. Correlations conducted on ore which is parallel to the foliation plane of S1. Resource estimation done by the method of inverse distance estimation statistics (IDE), block model size of 4x4x2 m and sub-blocks 0,5x0,5x0,25 m, the radius of influence for the measured and indicated resource set 25 m and 50 m, with cut-off grade of 0,01 %U3O8. The result of estimation is measured resource of 708 ton eU3O8 grading at 0,081 %U3O8, and indicated resource of 199 ton eU3O8 grading at 0,076 %U3O8.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Lemajung, Kalan, uranium, modeling, resource
Subjects: Daur Bahan Bakar Nuklir dan Bahan Maju > Bahan Galian Nuklir > Teknik Eksplorasi Bahan Galian Nuklir
Divisions: Pusat Teknologi Bahan Galian Nuklir
Depositing User: USER PTBGN BATAN
Date Deposited: 04 May 2018 10:30
Last Modified: 04 May 2018 10:30
URI: http://repo-nkm.batan.go.id/id/eprint/1000

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