Publication Search

Carbonate rocks are one of the most important geological resources with a significant role in various industrial sectors, particularly as the main raw material in cement, lime, and construction industries. This study aims to review the characteristics, quality, and industrial potential of three major carbonate rock types—limestone, dolomite, and marble—based on relevant scientific literature. The research employed a literature review method using a qualitative-descriptive approach through analysis and synthesis of previous studies. Data were collected from scientific publications addressing the mineralogical, chemical, and physical aspects of carbonate rocks and their implications for industrial performance. The findings indicate that the quality of carbonate rocks is largely determined by mineral composition (calcite and dolomite), chemical purity (CaO and MgO), and the presence of impurities such as silica, alumina, and iron oxides. High-purity limestone rich in calcite is identified as the most efficient raw material for cement and lime industries due to its stable processing behavior and lower energy requirements. Conversely, dolomite with high magnesium content requires process adjustments to prevent excessive MgO formation during calcination. Marble, both in natural and waste powder form, shows promising potential as a supplementary material in sustainable cement production. Overall, this study emphasizes that understanding the mineralogical and chemical variations of carbonate rocks is essential for optimizing their processing strategies and promoting sustainable industrial utilization 

Rock stability and service life in geotechnical and mining engineering are highly dependent on the rock's mechanical and physical parameters, where the variation in sandstone grain size is a crucial intrinsic factor. This study aims to comprehensively analyze the correlation between sandstone grain size with uniaxial compressive strength (UCS) and resistance to weathering (Slake Durability Index) in samples taken from the Balikpapan and Pulau Balang Formations in the Samarinda area, East Kalimantan. The research methodology involved a series of standard laboratory tests, including rock physical properties analysis, grain size distribution analysis, UCS testing, and slake durability testing through three cycles. The test results show a significant correlation: sandstone with finer grain sizes and higher density consistently demonstrates greater UCS values and a higher Durability Index, indicating superior mechanical and physical resistance. Specifically, the Pulau Balang Formation exhibits a more compact structure and finer grain size, resulting in better durability values compared to the Balikpapan Formation. These findings are important as a geomechanical data basis for slope design planning, rock mass stability analysis, and material selection in infrastructure projects or mining operations involving both formations.

Rock mining is a key sector contributing to economic development, including in Gorontalo Regency. However, this activity often generates negative environmental impacts such as erosion, water pollution, and ecosystem degradation. This study aims to analyze environmental management policies in rock mining activities using a literature review approach. The research was conducted by examining relevant literature published in the last five years, including national and regional regulations, as well as case study reports. The findings reveal that Indonesia has established a comprehensive regulatory framework through Law No. 32 of 2009 and Government Regulation No. 22 of 2021, which mandate Environmental Impact Assessment (AMDAL) as a key instrument for environmental protection. At the regional level, Gorontalo Provincial Regulation No. 2 of 2019 serves as the main guideline; however, its implementation faces challenges such as weak oversight and inadequate law enforcement. A case study in Motoduto Village shows actual environmental impacts in the form of erosion and sediment load increases in the Paguyaman River, although still within acceptable limits. Additionally, some companies operate without proper AMDAL or legal permits. Therefore, strengthening institutional capacity, digitizing permit data, and engaging communities are essential steps. Policy recommendations include consistent law enforcement, implementation of post-mining reclamation, and integration of spatial data-based policies. This study underscores the importance of a holistic approach to ensure a balance between the economic benefits of the mining sector and environmental conservation.

This community service is carried out to help teachers and schools, especially in improving numeracy literacy and the use of technology in the learning process. One form of community service that is carried out is through mentoring in the Kampus Mengajar program which is one of the eight superior programs offered by the Minister of Education and Culture. The mentoring referred to here is mentoring students who have passed the selection for the teaching program at school as Field Mentor Lecturers for the Kampus Mengajar program. Lecturers guide 3-4 students from several state and private campuses domiciled in Pamekasan or Sumenep and are placed at SDN Kowel 1 Pamekasan, SDN Groom Pamekasan and SDN Batuan 1 Sumenep. This mentoring has a direct impact on both the school including teachers, students, principals and of course students. For students, it is able to improve numeracy and literacy. For teachers, it increases knowledge related to technology and for students, it increases experience in teaching at school and how to collaborate with teachers. For schools, it helps with management and administration.