Siantori, Alfadeo Vulgar (2019) Aplikasi Metode Induced Polarization Untuk Identifikasi Zona Mineralisasi Endapan Emas. Sarjana thesis, Universitas Brawijaya.
Abstract
Telah dilakukan penelitian mengenai identifikasi zona mineralisasi endapan emas menggunakan metode induced polarization di PT. Antam Tbk. Penelitian ini menggunakan data sekunder hasil akuisisi data yang dilakukan oleh PT Antam, Tbk. Penelitian ini bertujuan mengidentifikasi zona mineralisasi emas (Au) berdasarkan data nilai resistivitas dan chargeabilitas batuan. Data yang digunakan terdiri dari 7 lintasan dengan jarak antar lintasan 100 m dan panjang masing-masing lintasan berkisar 1000 m. Metode pengukuran yang digunakan yaitu time domain dengan konfigurasi dipole-dipole dan spasi antar elektroda (a) sebesar 50 m. Adapun untuk pengolahan data menggunakan metode inversi. Kemudian dapat dilakukan interpretasi yang dikorelasikan dengan data geologi dilokasi penelitian. Nilai resistivitas yang didapatkan sangat bervariasi, antara 0– 327 Ohm.m. Adapun pada penelitian ini, rentang nilai resistivitas dibagi menjadi 3 yaitu resistivitas rendah, sedang, dan tinggi. Nilai resistivitas rendah yaitu antara 0–21 Ohm.m, nilai resistivitas sedang yaitu antara 21-132 Ohm.m, dan nilai resistivitas tinggi yaitu antara 132-327 Ohm.m. Nilai chargeabilitas yang didapat bervariasi antara 0-521 mV/V. Nilai chargeabilitas dibagai kedalam rentang nilai chargeabilitas rendah, sedang, dan tinggi. Nilai chargeabilitas rendah yaitu antara 0–19 mV/V, nilai chargeabilitas sedang yaitu antara 19- 174 mV/V, dan nilai chargeabilitas tinggi yaitu antara 174-521 mV/V. Berdasarkan dari hasil pengolahan data maka diketahui terdapat zona silifikasi dengan kemenerusan nampak pada lintasan CBCU-1 hingga CBCU-5. Sementara itu berdasarkan model 3D secara vertikal menunjukkan zona silifikasi muncul pada elevasi 600 meter dan semakin membesar kebawah hingga elevasi 575 meter.
English Abstract
Research has been conducted on the identification of gold deposit mineralization zones using the induced polarization method at PT. Antam Tbk. This study uses secondary data from data acquisition conducted by PT Antam, Tbk. This study aims to identify zones of gold mineralization (Au) based on rock resistivity and chargeability values. The data used consists of 7 tracks with a distance between tracks 100 m and the length of each track ranges from 1000 m. The measurement method used is a time domain with dipole-dipole configuration and spacing between electrodes (a) of 50 m. The data processing uses inversion method. Then an interpretation can be made that is correlated with geological data at the location of the study. The resistivity values obtained vary greatly, between 0–327 Ohm.m. As for this study, the range of resistivity values is divided into 3, namely low, medium, and high resistivity. Low resistivity values are between 0-21 Ohm.m, medium resistivity values are between 21-132 Ohm.m, and high resistivity values are between 132-327 Ohm.m. The chargeability value obtained varies between 0-521 mV / V. The chargeability value is divided into the low, medium, and high chargeability value ranges. Low chargeability value is between 0–19 mV / V, moderate chargeability value is between 19-174 mV / V, and high chargeability value is between 174-521 mV / V. Based on the results of data processing, it is known that there is a silification zone with visible continuity on the CBCU-1 to CBCU- 5 paths. Meanwhile, based on a vertical 3D model, the silification zone appears at an elevation of 600 meters and grows bigger down to an elevation of 575 meters.
Other obstract
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| Item Type: | Thesis (Sarjana) |
|---|---|
| Identification Number: | SKR/MIPA/2019/306/051910977 |
| Uncontrolled Keywords: | Induced Polarization, Mineralisasi, Resistivitas, Chargeabilitas. Induced Polarization, Mineralization, Resistivity, Chargeability. |
| Subjects: | 500 Natural sciences and mathematics > 549 Mineralogy |
| Divisions: | Fakultas Matematika dan Ilmu Pengetahuan Alam > Fisika |
| Depositing User: | Budi Wahyono Wahyono |
| Date Deposited: | 19 Jul 2020 08:31 |
| Last Modified: | 31 Jul 2020 07:09 |
| URI: | http://repository.ub.ac.id/id/eprint/179415 |
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