Putra, Arya Nur Dewangga (2021) Pengoptimalan Dugaan Mineral Mangan (Mn) Dengan Korelasi Metode Resistivitas 2D dan Polarisasi Terinduksi 2D di Lapangan “X”, Kabupaten Timor Tengah Utara, Nusa Tenggara Timur. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Penelitian yang telah dilakukan pada tahun 2015 dengan menggunakan metode geolistrik resistivitas 2D konfigurasi Wenner mendapatkan hasil sebaran zona yang berpotensi mengandung mangan. Namun, penelitian tersebut tidak memuat informasi terkait posisi dan jumlah dugaan secara detail. Hal ini ditunjukkan dengan hasil pit test, dimana hanya ada satu titik yang berhasil dieksploitasi dari 9 titik yang dianggap berpotensi. Penelitian kali ini bertujuan untuk memperoleh dugaan mineral mangan yang lebih optimal dengan menggunakan korelasi metode geolistrik resistivitas dan polarisasi terinduksi (IP) dengan konfigurasi Wenner. Selain itu, perhitungan volume aproksimasi volumetrik bangun sederhana (tabung) juga dilakukan untuk membandingkan hasil penelitian terbaru (zona primer (PPr)) dan hasil penelitian tahun 2015 (sekunder (PPs)). Penelitian ini memuat data resistivitas dan chargeability dari 273 lintasan yang tersebar di area prospek. Berdasarkan hasil penelitian, didapatkan resistivitas mangan pada rentang nilai 0.1 Ωm hingga 0.6 Ωm dengan rata-rata error 3% hingga 6%. Sedangkan, rentang nilai chargeability mangan adalah 9 msec hingga 14 msec dengan rata-rata error 1% hingga 3%. Penelitian menunjukkan bahwa metode korelasi dapat memberikan informasi mengenai lempung limonit yang merupakan asosiasi sedimen lempung dan logam. Hal ini membuat korelasi metode lebih optimal karena memperkecil kesalahan interpretasi mangan atau lempung limonit. Sebaran dugaan potensi mangan yang didapatkan berada di 74 titik yaitu, LK 1D (T2, T6, T7, T9), LK 2D (T3), LK 4D (T2, T4, T5, T6, T7, T8, T10), LK 5D (T6, T8), LK 6D (T10), LK 7D (T6, T10), LK 8D (T3, T4, T9), LK 10D (T3, T4, T5, T6), LK 12D (T4, T10), LK 13D (T1), LK 14D (T3, T4, T6, T7), LK 17D (T1, T4), LK 19D (T7, T10), LK 20 (T1, T4, T5, T6, T7, T8, T9, T10), LK 21 (T2, T3, T5, T6, T8, T9), LK 22D (T1, T5, T8, T10), LK 23 (T3, T4, T5, T9), LK 24 (T1, T3, T6), LK 26 (T1, T3, T7, T8, T9), LK 27 (T2, T3), LK 28 (T7, T8, T9), LK 29 (T2, T3), LK 33 (T2), LK 35 (T1).
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A research conducted in 2015 using 2D geoelectric resistivity method with Wenner configuration obtained the distribution of manganese potentially zones. However, this study represented less information about position and number of allegations in detail. This was indicated by the results of the pit test, where only one point was successfully exploited from the nine points that were considered potential. This research aims to obtain a more optimal prediction of manganese minerals by the correlation of resistivity and chargeability using geoelectrical method with Wenner configuration. In addition, volume approximation data from simple shape (tubes) was used to compare the volumetric results of the latest research (Primary Zone (PPr)) and the research in 2015 (Secondary Zone (PPs)). This research contains resistivity and chargeability data from 273 lines scattered in the prospect area. Based on the research, manganese resistivity value range is 0.1 Ωm to 0.6 Ωm with an average error of 3% to 6%. Meanwhile, the manganese chargeability value range is 9 msec to 14 msec with an average error of 1% to 3%. Also, the correlation method can provide information about limonite clay which is an association of clay sediments and metals. This makes the correlation method is more optimal because it minimizes the misinterpretation of manganese or limonite clat which has a low resistivity and high chargeability. The distribution of the estimated potential manganese obtained is at 74 points, namely, LK 1D (T2, T6, T7, T9), LK 2D (T3), LK 4D (T2, T4, T5, T6, T7, T8, T10), LK 5D (T6, T8), LK 6D (T10), LK 7D (T6, T10), LK 8D (T3, T4, T9), LK 10D (T3, T4, T5, T6), LK 12D (T4, T10), LK 13D (T1), LK 14D (T3, T4, T6, T7), LK 17D (T1, T4), LK 19D (T7, T10), LK 20 (T1, T4, T5, T6, T7, T8, T9 , T10), LK 21 (T2, T3, T5, T6, T8, T9), LK 22D (T1, T5, T8, T10), LK 23 (T3, T4, T5, T9), LK 24 (T1, T3 , T6), LK 26 (T1, T3, T7, T8, T9), LK 27 (T2, T3), LK 28 (T7, T8, T9), LK 29 (T2, T3), LK 33 (T2), LK 35 (T1).
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Uncontrolled Keywords: | Induceed Polarization (IP), Mangan, Perhitungan Volumetrik, Resistivitas, Induceed Polarization (IP), Manganese, Volumetric Calculation, Resistivity |
| Subjects: | Q Science > QE Geology > QE571 Sedimentation and deposition. Sediment transport. Erosion. Q Science > QE Geology > QE604 Deformation T Technology > TN Mining engineering. Metallurgy |
| Divisions: | Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Geophysics Engineering > 33201-(S1) Undergraduate Thesis |
| Depositing User: | Arya Nur Dewangga Putra |
| Date Deposited: | 07 Mar 2021 20:51 |
| Last Modified: | 07 Mar 2021 20:51 |
| URI: | http://repository.its.ac.id/id/eprint/83702 |
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