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All Journal Buletin Sumber Daya Geologi Akrab Juara : Jurnal Ilmu-ilmu Sosial Jurnal Ilmiah Riset dan Pengembangan
Priatna
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GEOLOGI, MINERALOGI, DAN GEOKIMIA ENDAPAN BAUKSIT LATERIT DI DESA MUKTI JAYA, KABUPATEN SANGGAU, KALIMANTAN BARAT: GEOLOGY, MINERALOGICAL, AND GEOCHEMICAL LATERITE BAUXITE DEPOSITS IN MUKTI JAYA VILLAGE, SANGGAU DISTRICT, WEST KALIMANTAN Permatasari, Aisha; Sabtanto Joko Suprapto; Priatna; Tatik Handayani; Dedi Sunjaya
Buletin Sumber Daya Geologi Vol 19 No 2 (2024): Buletin Sumber Daya Geologi
Publisher : Pusat Sumber Daya Mineral Batubara dan Panas Bumi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47599/bsdg.v19i2.477

Abstract

The geology of West Kalimantan, especially Sanggau Regency, contains a wide range of acidic to intermediate rocks of Lower Cretaceous age with stable tectonic conditions that meet the requirements for the formation of bauxite on an economical scale. The research area is in Mukti Jaya Village, Sanggau Regency, West Kalimantan Province. This research aims to determine the geology, mineralogical, and geochemical characteristics of bauxite deposits. The research methodology includes geological mapping, test pits, and laboratory analysis using XRF, A total of 390 bauxite samples were analyzed by XRF, 5 bauxite samples were analyzed by XRD, 4 bedrock samples and 2 bauxite samples were analyzed petrographically, and 2 bauxite concretion samples were analyzed mineragraphically. Based on the results of geological mapping, granodirite, quartz diorite and tonalite rocks were found. Bauxite is composed of the minerals quartz, gibbsite, kaolinite, hematite, biotite, boehmite, goethite, diaspor, muscovite, plagioclase, chlorite, and magnetite. From the results of XRF analysis content obtained 16.63% – 52.56% Al2O3; 14.5% – 66.69% TSiO2; 0.47% – 10.2% RSiO2; and 3.56% – 32.92% Fe2O3. The results of the correlation analysis showed a very strong and negatively correlated level of relationship between Al2O3 and TSiO2, as well as a very low level of relationship between Al2O3 and RSiO2. From the results of the regression analysis, it was found that TSiO2 had an effect on Al2O3 and RSiO2 had no effect on Al2O3.
ESTIMASI SUMBER DAYA BAUKSIT MENGGUNAKAN METODE ORDINARY KRIGING DI KECAMATAN MELIAU, KALIMANTAN BARAT: ESTIMATION OF BAUXITE RESOURCES BASED ON ORDINARY KRIGING METHODS AT KECAMATAN MELIAU, WEST KALIMANTAN Westia Alifah Surya Pratiwi; Denny Lumban Raja; Priatna; Sarah Mutia; Dedi Sunjaya
Buletin Sumber Daya Geologi Vol 19 No 2 (2024): Buletin Sumber Daya Geologi
Publisher : Pusat Sumber Daya Mineral Batubara dan Panas Bumi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47599/bsdg.v19i2.492

Abstract

The estimation of mineral resources is crucial in mining, particularly in determining production targets, pit design, and investment decisions. Accurate resource estimation results will facilitate optimal mine planning. The objective of this study is the application of estimation techniques that consider geostatistics, namely ordinary kriging, in estimating bauxite deposit resources. The research location is in the laterite arc of West Kalimantan. The data used for estimation are exploration data from 212 test pit locations. The aim of this study is to identify the lithology of the bauxite deposit, distribution of grades, and estimate bauxite resources as well as determine the optimal spacing of test pits as a basis for resource classification in the study area. Petrographic analysis was conducted on four samples to determine the lithology. The study results indicate that the lithology forming the bauxite deposit consists of granodiorite, quartz diorite, and granite. The bauxite deposits in the study area are predominantly derived from granodiorite with high content, thus characterizing the bauxite as kaolinitic bauxite. The bauxite resource estimation results, based on a cut-off grade of >35%, <8%, dan ≤30%, amounted to 722,720 tons of washed bauxite, with an average grade of 39,78% , dan 25,05% , with a concretion factor of 48.44%. The inferred washed bauxite resources are 146,962 tons, the indicated resources are 550,482 tons, and the measured resources are 221,643 tons. Based on the sill variogram calculation, the optimal spacing for test pits for bauxite exploration in the study area with resource classification is 100 m for inferred, 50 m for indicated, and 25 m for measured resources.
GEOLOGI, MINERALOGI, DAN GEOKIMIA ENDAPAN BAUKSIT LATERIT DI DESA MUKTI JAYA, KABUPATEN SANGGAU, KALIMANTAN BARAT: GEOLOGY, MINERALOGICAL, AND GEOCHEMICAL LATERITE BAUXITE DEPOSITS IN MUKTI JAYA VILLAGE, SANGGAU DISTRICT, WEST KALIMANTAN Permatasari, Aisha; Sabtanto Joko Suprapto; Priatna; Tatik Handayani; Dedi Sunjaya
Buletin Sumber Daya Geologi Vol 19 No 2 (2024): Buletin Sumber Daya Geologi
Publisher : Pusat Sumber Daya Mineral Batubara dan Panas Bumi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47599/bsdg.v19i2.477

Abstract

The geology of West Kalimantan, especially Sanggau Regency, contains a wide range of acidic to intermediate rocks of Lower Cretaceous age with stable tectonic conditions that meet the requirements for the formation of bauxite on an economical scale. The research area is in Mukti Jaya Village, Sanggau Regency, West Kalimantan Province. This research aims to determine the geology, mineralogical, and geochemical characteristics of bauxite deposits. The research methodology includes geological mapping, test pits, and laboratory analysis using XRF, A total of 390 bauxite samples were analyzed by XRF, 5 bauxite samples were analyzed by XRD, 4 bedrock samples and 2 bauxite samples were analyzed petrographically, and 2 bauxite concretion samples were analyzed mineragraphically. Based on the results of geological mapping, granodirite, quartz diorite and tonalite rocks were found. Bauxite is composed of the minerals quartz, gibbsite, kaolinite, hematite, biotite, boehmite, goethite, diaspor, muscovite, plagioclase, chlorite, and magnetite. From the results of XRF analysis content obtained 16.63% – 52.56% Al2O3; 14.5% – 66.69% TSiO2; 0.47% – 10.2% RSiO2; and 3.56% – 32.92% Fe2O3. The results of the correlation analysis showed a very strong and negatively correlated level of relationship between Al2O3 and TSiO2, as well as a very low level of relationship between Al2O3 and RSiO2. From the results of the regression analysis, it was found that TSiO2 had an effect on Al2O3 and RSiO2 had no effect on Al2O3.
ESTIMASI SUMBER DAYA BAUKSIT MENGGUNAKAN METODE ORDINARY KRIGING DI KECAMATAN MELIAU, KALIMANTAN BARAT: ESTIMATION OF BAUXITE RESOURCES BASED ON ORDINARY KRIGING METHODS AT KECAMATAN MELIAU, WEST KALIMANTAN Westia Alifah Surya Pratiwi; Denny Lumban Raja; Priatna; Sarah Mutia; Dedi Sunjaya
Buletin Sumber Daya Geologi Vol 19 No 2 (2024): Buletin Sumber Daya Geologi
Publisher : Pusat Sumber Daya Mineral Batubara dan Panas Bumi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47599/bsdg.v19i2.492

Abstract

The estimation of mineral resources is crucial in mining, particularly in determining production targets, pit design, and investment decisions. Accurate resource estimation results will facilitate optimal mine planning. The objective of this study is the application of estimation techniques that consider geostatistics, namely ordinary kriging, in estimating bauxite deposit resources. The research location is in the laterite arc of West Kalimantan. The data used for estimation are exploration data from 212 test pit locations. The aim of this study is to identify the lithology of the bauxite deposit, distribution of grades, and estimate bauxite resources as well as determine the optimal spacing of test pits as a basis for resource classification in the study area. Petrographic analysis was conducted on four samples to determine the lithology. The study results indicate that the lithology forming the bauxite deposit consists of granodiorite, quartz diorite, and granite. The bauxite deposits in the study area are predominantly derived from granodiorite with high content, thus characterizing the bauxite as kaolinitic bauxite. The bauxite resource estimation results, based on a cut-off grade of >35%, <8%, dan ≤30%, amounted to 722,720 tons of washed bauxite, with an average grade of 39,78% , dan 25,05% , with a concretion factor of 48.44%. The inferred washed bauxite resources are 146,962 tons, the indicated resources are 550,482 tons, and the measured resources are 221,643 tons. Based on the sill variogram calculation, the optimal spacing for test pits for bauxite exploration in the study area with resource classification is 100 m for inferred, 50 m for indicated, and 25 m for measured resources.
SAFETY TALK COMMUNICATION STRATEGY AT PT. COALINDO ADHI PERKASA Sapitri; Priatna
Akrab Juara : Jurnal Ilmu-ilmu Sosial Vol. 10 No. 4 (2025): November
Publisher : Yayasan Azam Kemajuan Rantau Anak Bengkalis

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Abstract

Work safety is a crucial aspect in the mining industry due to the high risks of accidents that may occur. PT. Coalindo Adhi Perkasa, as a mining company, is committed to creating a safe working environment through various efforts, one of which is the regular implementation of safety talk. This study aims to describe the communication strategies applied in conducting safety talk at PT. Coalindo Adhi Perkasa and how these strategies are implemented. The research uses a qualitative method with a case study approach, where data are collected through in-depth interviews with management and employees, direct observation during the sessions, and documentation review related to the materials and communication processes. The findings reveal that the communication strategy in safety talk at PT. Coalindo Adhi Perkasa emphasizes an interactive approach that encourages active employee participation, the use of simple language, and the utilization of visual media and real-life case examples relevant to daily work. Furthermore, full support from management and the consistency of safety talk implementation are important factors in executing the communication strategy. Adaptive and innovative communication strategies were also found to tailor the material according to the needs and conditions on site, thus helping to build a strong safety culture within the workplace.
THE EFFECTIVENESS OF WHATSAPP GROUPS AS A COMMUNICATION MEDIA IN THE DIVISION OF WORK AT PT. SATUNADA Sari Putri Rizki; Priatna
Akrab Juara : Jurnal Ilmu-ilmu Sosial Vol. 10 No. 4 (2025): November
Publisher : Yayasan Azam Kemajuan Rantau Anak Bengkalis

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Abstract

This study aims to analyze the utilization of WhatsApp as an organizational communication medium for work distribution at PT. Satunada. WhatsApp was chosen due to its practical features, cost efficiency, and accessibility to all employee levels. This research employed a descriptive qualitative approach through in-depth interviews with key informants, including the manager, administrative staff, and field operators at PT. Satunada. The findings revealed that WhatsApp plays a significant role in accelerating information delivery, facilitating cross-division coordination, and supporting real-time documentation of work distribution. The group feature in WhatsApp enables all team members to receive messages simultaneously, thereby reducing the risk of miscommunication and enhancing transparency in task assignments. Nevertheless, the study identified challenges such as potential disruption of employees’ rest time due to messages sent outside working hours, as well as the blending of personal and work-related messages. Therefore, it is recommended that the company establish clear and structured digital communication policies to optimize WhatsApp usage without creating additional psychological burdens for employees.
ANALYSIS OF WHATSAPP USE IN IMPROVING THE QUALITY OF ADMINISTRATIVE PROCUREMENT DOCUMENT PROCESSING SERVICES AT PT MITRA MANDIRI INFORMATIKA Amalia Wahyuni; Priatna
Akrab Juara : Jurnal Ilmu-ilmu Sosial Vol. 10 No. 4 (2025): November
Publisher : Yayasan Azam Kemajuan Rantau Anak Bengkalis

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Abstract

PT Mitra Mandiri Informatika is a company engaged in the field of Information Technology, specializing in electronic procurement, cybersecurity, IT infrastructure, and software. This study aims to analyze the use of the WhatsApp application in improving the quality of administrative procurement document services at PT Mitra Mandiri Informatika. WhatsApp was chosen due to its ability to facilitate fast, efficient, and accurate communication, both in verbal and written forms. This research uses a qualitative approach with data collection techniques including observation, interviews, and documentation. The results of the study show that the use of WhatsApp provides positive benefits in supporting service processes, particularly in terms of ease of communication, speed of information delivery, cost efficiency, information accuracy, as well as enhancing satisfaction and responsiveness in completing administrative documents. WhatsApp has proven to be an effective and efficient communication tool in improving the quality of procurement administrative services within the company.
EFFECTIVENESS OF USING INSTAGRAM AS A MEDIA FOR DISSEMINATION OF LEGAL INFORMATION IN THE DISTRICT PROSECUTOR'S OFFICE OF BOGOR REGENCY Chelsya Eunike Rompas; Priatna
Akrab Juara : Jurnal Ilmu-ilmu Sosial Vol. 10 No. 4 (2025): November
Publisher : Yayasan Azam Kemajuan Rantau Anak Bengkalis

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Abstract

This study aims to determine the effectiveness of Instagram's use as a medium for disseminating legal information at the Bogor Regency District Attorney's Office. The research used a descriptive qualitative approach through a case study method. Data were collected through in-depth interviews with account managers and members of the public, observations of official Instagram account activity, and documentation from archives and social media content. Data analysis employed the Miles and Huberman interactive model, which encompasses data reduction, data presentation, and conclusion drawing. The results indicate that Instagram is quite effective in conveying legal information to the public, particularly young people. Effectiveness is evident across cognitive, affective, and conative dimensions, although obstacles remain, such as limited human resources, less interactive content, and the lack of structured content evaluation. These findings confirm that social media, particularly Instagram, has significant potential to support the prosecutor's office's role in providing legal education while encouraging public participation in understanding legal issues.
THE ROLE OF POLITICAL INFLUENCERS AND DIGITAL CAMPAIGNERS IN BUILDING LONG-TERM VOTER LOYALTY IN INDONESIA AFTER THE 2024 ELECTION Azhar Hutomo; Romi Syahril; Priatna; A.Rafiq
Akrab Juara : Jurnal Ilmu-ilmu Sosial Vol. 10 No. 4 (2025): November
Publisher : Yayasan Azam Kemajuan Rantau Anak Bengkalis

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Abstract

This study aims to understand the role of political influencers and digital campaigners in shaping long-term loyalty among young Indonesian voters post-2024 elections. Using a qualitative approach through case study methods and digital content analysis, this study examines the communication styles, political narratives, and personal interactions of influencers through social media in shaping sustainable political perceptions. The analysis shows that political influencers are able to form significant emotional and cognitive attachments with voters through educational and interactive content. The resulting voter loyalty depends not only on affiliation with political parties or political ideology, but also on the credibility and consistency of the influencer's communication. These findings demonstrate a shift in the dynamics of contemporary political communication and the importance of strengthening digital political literacy post-campaign.
BURNOUT AS A MEDIATOR OF TRAIN DRIVERS’ PERFORMANCE IN WORK SHIFTS STUDY AT PT KERETA API INDONESIA (PERSERO) Priatna; Dwiputrianti, Septiana; Jubaedah, Edah; Pradesa, Hafid Aditya
Irpia : Jurnal Ilmiah Riset dan Pengembangan Vol 11 No 1 (2026): Irpia : Jurnal Ilmiah Riset dan Pengembangan
Publisher : Institut Riset dan Pengembangan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71040/jirp.v11i1.311

Abstract

Safety and performance of train drivers are crucial factors in railway operations. Shift work systems involving night shifts, irregular rotations, and long working hours can lead to work-related fatigue (burnout), which impacts performance. This study aims to analyze the effect of work shifts on train driver performance with burnout as a mediating variable at PT Kereta Api Indonesia (Persero). The research uses a quantitative approach with a survey of 2,184 train drivers. Data analysis is conducted using Partial Least Squares–Structural Equation Modeling (PLS-SEM). The results reveal that work shifts have a significant positive effect on burnout (β = 0.608), work shifts have a significant negative effect on train driver performance (β = –0.339), and burnout has a very strong negative effect on performance (β = –0.839). Burnout significantly mediates the relationship between work shifts and performance, with a mediation effect of 51%. These findings emphasize that the decline in train driver performance is more influenced by burnout than by direct effects of work shifts. Comparatively, Japan’s fatigue management practices through a Fatigue Risk Management System (FRMS) are more systematic and preventive compared to Indonesia. This research contributes to strengthening the role of burnout as a mediating variable in the Job Demands–Resources framework and offers practical implications for PT KAI in reforming shift work policies for safety.
Co-Authors A.Rafiq Amalia Wahyuni Azhar Hutomo Chelsya Eunike Rompas Dedi Sunjaya Denny Lumban Raja Dwiputrianti, Septiana Hafid Aditya Pradesa Jubaedah, Edah Permatasari, Aisha Romi Syahril Sabtanto Joko Suprapto Sapitri Sarah Mutia Sari Putri Rizki Tatik Handayani Westia Alifah Surya Pratiwi