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All Journal Jurnal Teknik Industri Terintegrasi (JUTIN) Journal of Geology and Exploration
Malureng, Niciawati Dg
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Decision Sciences, Operations Research & Management Earth & Planetary Sciences Energy Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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Netralisasi air limbah penambangan emas di Blok Jalur 7 Bolaang Mongondow dengan menggunakan larutan kapur Malureng, Niciawati Dg; Suryanto, Andi; Yani, Setyawati
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 8 No. 1 (2025): January
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v8i1.42067

Abstract

The Bolaang Mongondow region, especially in Tanoyan Selatan Village within the Lolayan District, presents considerable promise for the extraction of economically significant minerals, including gold ore. In this region, the practice of small-scale gold mining frequently utilizes cyanidation methods, which present significant environmental hazards. This research endeavors to investigate the effectiveness of Lobong lime and Kemindo lime in neutralizing the pH of mining wastewater, with particular emphasis on the impact of lime type and concentration on pH levels. The methodology for treating wastewater entailed the incorporation of lime powder into mining wastewater at diverse concentrations of 0.03 g, 0.04 g, 0.05 g, 0.08 g, 0.10 g, and 0.12 g, accompanied by stirring intervals of 1 minute, 3 minutes, 5 minutes, 7 minutes, and 10 minutes. The results indicated that Kemindo lime consistently surpassed Lobong lime in elevating pH levels. Moreover, the level of lime demonstrated a direct positive relationship with the enhancement of pH; increased lime concentrations led to markedly higher pH values. The findings highlight the essential importance of choosing the correct type and concentration of lime in wastewater treatment to improve both water and soil quality, consequently reducing environmental repercussions.
Characteristics of Epithermal Mineralization in Block Jalur 7 Bolaang Mongondow Regency, North Sulawesi Firdaus F; Malureng, Niciawati Dg; Hasbi Bakri; Wakila, Muhamad Hardin; Anshariah, Anshariah; Rizky Nurul Aulia
Journal of Geology and Exploration Vol. 4 No. 2 (2025): Journal of Geology and Exploration, December 2025
Publisher : CV Insight Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58227/jge.v4i2.250

Abstract

Indonesia has the potential as an area containing large reserves of gold and sulfide minerals. One of the areas with the potential to produce gold is Bolaang Mongondow Regency, North Sulawesi Province. This study aims to identify the characteristics of epithermal deposition mineralization, including texture and the presence of mineralization, to determine its paragenesis. The analysis methods used are petrography, mineralogy, and X-ray Diffraction (XRD). As many as six samples in the test well are described megascopically and polarization microscopically, which have been ground into clay-sized fractions and analyzed using the X-ray Diffraction (XRD) method to detect clay minerals and other altered mineral associations. The quartz texture present at the research location based on megascopic observations is generally dominated by saccharoidal, vuggy, mold, banded, and chalcedonic textures. The identified minerals are generally dominated by base metal minerals, with paragenesis in sequence being pyrite, chalcopyrite, galena, hematite, ilmenite, and geothite. Alterations in the research area are in the form of Argillic, Silicic, Silica-Carbonate, and propylitic zones. The study's results concluded that the type of mineralization in Bolaang Mongondow Regency, North Sulawesi, is of the low-sulfidation epithermal type.
Co-Authors Andi Suryanto Anshariah, Anshariah Firdaus F Hasbi Bakri Rizky Nurul Aulia Wakila, Muhammad Hardin Yani, Setyawati