Rahayu, Elfi Agustini (2026) Identifikasi Zona Potensi Mineralisasi Emas (Au) Menggunakan Metode Resistivitas dan Induced Polarized (IP) pada Prospek “S” di Kabupaten Banyuwangi, Jawa Timur. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Survey metode geofisika resistivitas dan induced polarization (IP) telah dilakukan di prospek”S”, Kabupaten Banyuwangi, Jawa Timur, Indonesia untuk mengidentifikasi zona potensi mineralisasi emas (Au). Secara geologi prospek “S” terletak di lingkungan endapan epitermal dengan formasi batuan yang menjadi host rock adalah Formasi Batu Ampar. Formasi ini terdiri dari batuan vulkanik dan vulkaniklastik yang menjadi ciri wilayah pegunungan di selatan Pulau Jawa. Alterasi yang berkembang di wilayah ini sangat kompleks dengan karakteristik zona oksidasi di permukaan. Data sekunder hasil survey metode resistivitas dan IP dengan konfigurasi pole – dipole digunakan dalam penelitian ini. Data pada penelitian ini terdiri dari 3 line dengan panjang lintasan masing-masing 2600 meter. Data kemudian diolah dan diinversi menggunakan software Res2Dinv. Hasilnya berupa penampang 2D resistivitas dan chargeability yang kemudian diinterpretasi. Dilakukan pula pemodelan 3D dengan menggabungkan nilai hasil inversi ke dalam software Leapfrog Geo. Model 3D kemudian dikorelasi dengan data bor yang tersedia pada lokasi penelitian. Hasil korelasi menunjukkan hubungan yang positif. Dari penelitian ini ditemukan zona potensi mineralisasi emas di lokasi penelitian. Secara umum, zona potensi mineralisasi memiliki nilai chargeabilitas tinggi (>32 ms) dan nilai resistivitas yang bervariasi (10 – 3000 Ωm). Sementara zona non mineralisasi memiliki nilai resistivitas rendah (< 50 Ωm) dan chargeability yang rendah (<20 ms). Survei lebih lanjut dan integrasi dengan metode geofisika lain dibutuhkan untuk mengonfirmasi temuan ini. Hasil penelitian ini juga diharapkan bisa menjadi rujukan untuk kegiatan pertambangan selanjutnya.
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Geophysical surveys using resistivity and induced polarization (IP) methods were conducted at the “S” prospect, Banyuwangi Regency, East Java, Indonesia, to identify potential gold (Au) mineralization zones. Geologically, the “S” prospect is situated within an epithermal deposit environment, with the Batu Ampar Formation serving as the host rock. This formation consists of volcanic and volcaniclastic rocks characteristic of the southern mountainous region of Java Island. The alteration developed in this area is highly complex, marked by a distinctive oxidation zone at the surface. Secondary data from the resistivity and IP surveys, acquired using a pole-dipole configuration, were utilized in this study. The data consist of 3 lines, each with a profile length of 2,600 meters. The data were then processed and inverted using Res2Dinv software, producing 2D resistivity and chargeability cross-sections for interpretation. Furthermore, 3D modeling was performed by integrating the inversion values into Leapfrog Geo. The 3D model was subsequently correlated with available drillhole data at the study site, demonstrating a positive correlation. This study successfully identified potential gold mineralization zones within the research area. Generally, the potential mineralization zones are characterized by high chargeability values (greater than 32 ms) and highly variable resistivity values (10 to 3,000 Ωm). Conversely, non-mineralized zones exhibit low resistivity (less than 50 Ωm) and low chargeability (less than 20 ms) values. Further surveys and integration with other geophysical methods are required to confirm these findings. The results of this study are also expected to serve as a reference for subsequent mining activities.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Resistivitas, Induksi Polarisasi, Mineralisasi Emas, Banyuwangi, Resistivity, Induced Polarization, Gold Mineralization |
| Subjects: | T Technology > TN Mining engineering. Metallurgy > TN269 Prospecting--Geophysical methods |
| Divisions: | Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Geophysics Engineering > 33201-(S1) Undergraduate Thesis |
| Depositing User: | Elfi Agustini Rahayu |
| Date Deposited: | 02 Aug 2026 11:00 |
| Last Modified: | 02 Aug 2026 11:00 |
| URI: | http://repository.its.ac.id/id/eprint/142110 |
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