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All Journal Bulletin of Scientific Contribution : Geology Indonesian Journal of Applied Sciences IJOG : Indonesian Journal on Geoscience Jurnal RISET Geologi dan Pertambangan Journal of Engineering and Technological Sciences Jurnal Teknologi Mineral dan Batubara Journal of Geoscience, Engineering, Environment, and Technology Jurnal Geologi dan Sumberdaya Mineral (Journal of Geology and Mineral Resources) JLBG (Jurnal Lingkungan dan Bencana Geologi) (Journal of Environment and Geological Hazards) BULLETIN OF THE MARINE GEOLOGY Indonesian Mining Journal Buletin Sumber Daya Geologi JURNAL METEOROLOGI DAN GEOFISIKA Jurnal Geologi Kelautan: Media Hasil Penelitian Geologi Kelautan KURVATEK Indonesian Journal on Geoscience Indonesian Journal on Geoscience Jurnal Locus Penelitian dan Pengabdian Berita Sedimentologi Jurnal Geologi dan Sumberdaya Mineral (Journal of Geology and Mineral Resources) Jurnal Teknologi Mineral dan Batubara Journal of Geosciences and Applied Geology Jurnal Meteorologi dan Geofisika Indonesian Mining Journal
Ildrem Syafri
Fakultas Teknik Geologi, Universitas Padjadjaran
Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Materials Science & Nanotechnology Mathematics Physics Social Sciences

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PERUBAHAN LINGKUNGAN PENGENDAPAN PADA KALA MIOSEN AKHIR-PLIOSEN AWAL BERDASARKAN KUMPULAN FORAMINIFERA BENTONIK KECIL PADA LINTASAN KALI JRAGUNG, KABUPATEN DEMAK, JAWA TENGAH Jurnaliah, Lia; Syafri, Ildrem; Sudrajat, Adjat; Kapid, Roebiyanto
Bulletin of Scientific Contribution Vol 15, No 1 (2017): Bulletin of Scientific Contribution
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

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Abstract

ABSTRACTResearch area is located in Demak regency, Northern Central Java. Sixteen samplesediments was carried out from 140 meter section in Jragung River with 10 meter interval.Species and specimen of small benthic foraminifera was quantified in every 1 (one) gramdry sample sediment. Cluster analyses of small benthic foraminifera assemblages showedthat research area is comprises of 4 (four) biofacies. There are Biofacies A-JR (deep seawith middle bathyal zone), biofacies B-JR (shallow sea with outer shelf zone), biofacies C-JR (deep sea with middle bathyal – abyssal zone) and biofacies D-JR (deep sea withmiddle bathyal – lower bathyal zone). Eventually, during Late Miocene – Early Pliocenethere were 8 (eight) times fluctuate environmental (bathymetric zone) changes from deepsea to shallow sea.Key words: Small benthic foraminifera, biofacies, deep sea, shallow seaABSTRAKDaerah penelitian terletak di Kabupaten Demak, Jawa Tengah. Sebanyak 16 sampelsedimen diambil pada LIntasan Kali Jragung sepanjang 140 meter dengan interval 10meter. Penghitungan jumlah spesies dan jumlah individu foraminifera bentonik kecildilakukan pada setiap 1 (satu) gram sampel sedimen kering. Berdasarkan analisis klusterterhadap kumpulan foraminifera bentonik kecil, daerah penelitian terbagi menjadi 4(empat) biofasies, yaitu: Biofasies A-JR dengan lingkungan laut dalam (zona batialtengah); Biofasies B-JR dengan lingkungan laut dangkal (zona paparan luar); BiofasiesC-JR dengan lingkungan laut dalam (zona batial tengah-zona abisal) dan Biofasies D-JRdengan lingkungan laut dalam (zona batial tengah-zona batial bawah). Selama KalaMiosen Akhir-Pliosen Awal daerah penelitian mengalami 8 (delapan) kali perubahanlingkungan laut (zona batimetri) yang fluktuatif dari laut dalam menjadi laut dangkal.Kata Kunci: Foraminifera bentonik Kecil, biofasies, laut dalam, laut dangkal
IDENTIFIKASI MINERAL LEMPUNG PADA ENDAPAN HIDROTERMAL PROSPEK TABOBO-MALIFUT, HALMAHERA UTARA PROVINSI MALUKU UTARA Madi, Almun; Syafri, Ildrem; Rosana, Mega Fatimah
Bulletin of Scientific Contribution Vol 16, No 1 (2018): Bulletin of Scientific Contribution GEOLOGY
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

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Abstract

Daerah penelitian terletak di Desa Tabobo, Kecamatan Malifut, Kabupaten Halmahera Utara, Provinsi Maluku Utara. Daerah penelitian juga merupakan bagian dari areal ekplorasi (IUP) PT. Beringin Halmahera Mineral. Secara geografis, daerah penelitian terletak pada koordinat 127049’- 127047’19 BT dan 1011’-1011’ LU. Penelitian ini bertujuan untuk mengidentifikasi mineral-mineral lempung yang terdapat di lokasi Tabobo. Metode penelitian yang dilakukan adalah survey lapangan, analisis laboratorium berupa analisis petrografi dan X-Ray Diffraction. Berdasarkan hasil penelitian di lapangan dan analisis laboratorium, teridentifikasi mineral-mineral lempung seperti klorit, smektit montmorillonit, halloysit dan kaolinit. Hasil ini dapat dikatakan bahwa tipe alterasi mineral lempung Tabobo lebih menunjukkan pada tipe mineralisasi epitermal sulfida rendah.Kata kunci: Tabobo, Lempung, Mineral.
Potensi, Kebijakan dan Pemanfaatan Logam Tanah Jarang (LTJ) Menuju Net Zero Emission (NZE) di Indonesia Puspita, Ramelia Eka; Syafri, Ildrem; Sendjaja, Yoga Andriana; Ramzis, Novaldo
Jurnal Locus Penelitian dan Pengabdian Vol. 4 No. 5 (2025): JURNAL LOCUS: Penelitian & Pengabdian
Publisher : Riviera Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58344/locus.v4i5.4124

Abstract

Salah satu mineral yang masuk dalam kategori mineral kritis dan strategis yaitu Logam Tanah Jarang (LTJ), yang menunjukkan betapa pentingnya mineral ini untuk kemajuan industri berbasis teknologi ramah lingkungan (green energy). LTJ merupakan bahan baku/ komponen dasar pembuatan barang elektronik serta teknologi tinggi lainnya. Sebagai komponen dasar, tentunya perlu diketahui berapa besar potensinya, kebijakan yang sudah dibuat oleh pemerintah, dan pengolahan atau ekstraksi logam tanah jarang sehingga dapat dimanfaatkan agar target Net Zero Emission (NZE) dapat tercapai seperti yang sudah disepakati pada persetujuan paris terkait strategi mengatasi perubahan iklim. Penelitian ini bertujuan untuk mengetahui seberapa besar potensi LTJ di Indonesia, kebijakan pengelolaan LTJ, pemanfaatan LTJ sebagai komponen dasar pembuatan teknologi dan energi yang ramah lingkungan sehingga sejalan dengan strategi Pemerintah dalam program NZE. Metode penelitian yang dilakukan yaitu dengan pengambilan sampel di lokasi penelitian berada di Daerah Tanjung Binga dan sekitarnya, Kabupaten Belitung dan analisis menggunakan XRF, ICP-MS dan sayatan tipis untuk variabel potensi logam tanah jarang serta analisis SWOT untuk variabel potensi, kebijakan, pemanfaatan dan net zero emission. Dari hasil pengamatan menggunakan analisis petrogarfi di dapat bahwa pada tiga sample diklasifikasikan ke dalam batuan granitik dari formasi Granit Tanjungpandan dengan paragenesis bervariasi, sedangkan hasil analisis geokimia nya belum ditemukan mineral sulfida akan tetapi dilihat dari formasinya mengandung mineralisasi timah dan memperlihatkan kecenderungan pengayaan Na2O dan Light Rare Earth Elements (LREE), diharapkan hasil penelitian ini bisa menjadi informasi dalam pemetaan potensi LTJ, pembuatan kebijakan yang tepat sehingga LTJ dapat dikelola dengan baik dan mampu mencapai target NZE.
QUARTZ VEIN INFILL STRUCTURE MODE IN KENCANA DEPOSIT, GOSOWONG GOLDFIELD, INDONESIA Electricia, K.S.; Rosana, Mega F.; Yuningsih, Euis Tintin; Syafri, Ildrem; Viqnoriva, S.N.
Bulletin of Scientific Contribution Vol 15, No 1 (2017): Bulletin of Scientific Contribution
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

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Abstract

ABSTRACTGosowong province has economic mineralisation which is classified as low sulphidation epithermal veining system containing high-grade of gold and silver. It is characterizes by various veins hosted in Holocene Quaternary volcanic rocks, mineralisation generally occurs in host rock andesite. The Kencana epithermal vein system in Gosowong Au-Ag district hosted by two main sub-parallel North-West trending major fault structures, named Kencana One (K1) and Kencana Two (K2) with strike lenght extend up to 600m. Both structures joined by link structures, appears to be Kencana Link (K-Link) as the thickest link structure. The Kencana One (K1) is the first underground mine in Gosowong district. The nature of underground conditions at Kencana has a high variability of gold grades. Thus due to extremely high grades ore in Kencana, it is need to be precise and thoroughly handling to obtain best results. Primary mineralisation occurs in multistage veins, breccias and stockwork veins as infill structures. This study confirming that there is a strong correlation between quartz vein infill structure mode versus gold grade which classified into (1) 1.01-3.0g/t Au, dominated with wall-rock breccia and stockwork, (2) 3.01-6.0g/t Au, dominated with wall-rock breccia follows by stockwork, (3) 6.01-20.0g/t Au, dominated with wall-rock breccia follows by quartz lode and stockwork, (4) 20.01-80.0g/t Au, dominated by wall-rock breccia follows by vein breccia and quartz lode, (5) >80g/t Au, dominated by wall-rock breccia. In terms of production quartz vein infill mode together and quartz vein texture with gold grade has been used as the main reference for geologist to make a direction in the process of ore drive determination in underground mining operations. Keywords: Kencana, low sulphidation epithermal, quartz vein infill modeSARIGosowong memiliki mineralisasi ekonomis yang merupakan epitermal sulfida rendah yang mengandung emas dan perak dengan kadar tinggi. Cebakan dicirikan dengan kehadiran urat yang bervariasi dengan batuan vulkanik kuarter sebagai batuan induk berumur Holosen, mineralisasi umumnya terjadi di dalam batuan induk andesit. Kencana berada di dalam area Cebakan Au-Ag Gosowong. Kencana terdiri dari dua struktur besar yang berdampingan, dinamakan Kencana Satu (K1) dan Kencana Dua (K2) dengan arah jurus sepanjang 600m. Keduanya dihubungkan dengan struktur yang dinamakan Kencana Link (K-Link) yang merupakan struktur bukaan yang paling tebal. K1 adalah tambang bawah tanah pertama di Gosowong. Kondisi bawah tanah di Kencana menunjukkan variasi tubuh bijih emas yang mengandung kadar emas yang bervariasi. Dengan adanya kadar emas yang tinggi, maka penangannya harus tepat dan seksama untuk mendapatkan hasil terbaik. Secara umum mineralisasi terjadi secara bertahap dalam urat kuarsa, breksiasi, dan urat stockwork. Penelitian ini menegaskan bahwa terdapat korelasi yang kuat antara tipe struktur urat kuarsa dengan kadar emas yang diklasifikasikan menjadi (1) 1.01-3.0 g/t Au, didominasi oleh breksiasi batuan dinding dan stockwork, (2) 3.01-6.0 g/t Au, didominasi oleh breksiasi batuan dinding diikuti oleh stockwork, (3) 6.01-20.0 g/t Au, didominasi oleh breksiasi batuan dinding diikuti oleh quartz lode dan stockwork (4) 20.01-80.0 g/t Au, didominasi oleh breksiasi batuan dinding diikuti oleh breksiasi urat kuarsa dan quartz lode (5) > 80g/t Au, didominasi oleh breksiasi batuan dinding. Di dalam proses produksi, tipe struktur urat kuarsa dan  tekstur urat kuarsa bersama dengan kadar emas menjadi petunjuk untuk geolog dalam menentukan arah penambangan emas di dalam tambang bawah tanah.Kata kunci: epitermal sulfida rendah, Kencana, tipe struktur urat kuarsa
PENENTUAN STRUKTUR BAWAH PERMUKAAN MENGGUNAKAN APLIKASI GAYABERAT PADA DAERAH PANAS BUMI SOLOK Mayasari, Verna; Syafri, Ildrem; Haryanto, Agus Didit; Sugianto, Asep
Bulletin of Scientific Contribution Vol 16, No 1 (2018): Bulletin of Scientific Contribution GEOLOGY
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

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Abstract

Metode gayaberat dapat menggambarkan kondisi struktur bawah permukaan berdasarkanvariasi medan gravitasi bumi yang disebabkan oleh perbedaan densitas antar batuan di bawahpermukaan pada daerah panas bumi Solok. Hasil metode gayaberat berupa peta anomalibouguer, peta anomali bouguer regional, peta anomali bouguer residual beserta penampangyang akan memberikan gambaran keadaan batuan bawah permukaan. Hasil pemodelangayaberat menunjukkan liniasi kontur yang mengindikasikan struktur geologi berupa sesardengan arah baratdaya-timurlaut dengan nilai densitas batuan2.85 gr/cc yang berada padalapisan batuan vulkanik tersier. Penelitian ini diharapkan dapat memberikan pemahamanterhadap karakteristik anomali gayaberat dan membantu tahapan eksplorasi lebih lanjut. Kata kunci : anomali, bouguer, densitas, gayaberat, regional, struktur bawah permukaan,panas bumi.
THE IMPACT OF TOTAL MOISTURE AND ASH ON CALORIFIC VALUE: COAL RESEARCH IN BERAU SUB-BASIN, EAST KALIMANTAN Sugiarto, Wahyu; Muljana, Budi; Syafri, Ildrem; Rizal, Yan; Prasetya, Muhammad Nurul Huda
KURVATEK Vol 10 No 1 (2025): Energy Management and Sustainable Environment
Publisher : Institut Teknologi Nasional Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33579/krvtk.v10i1.5519

Abstract

Coal quality is one of the key factors in determining the effectiveness of processing and utilization. Coal quality assessment involves analyzing physical and chemical aspects to determine its characteristics. Coal quality is also influenced by geological conditions at the mining site, which affect the quality and amount of carbon in the coal. To ensure consistency, it is necessary to implement coal quality control based on physical and chemical parameters from the mining process in the pit to storage in the stockpile. Analysis of the effect of total moisture and ash on the calorific value of coal is the purpose of this study. The method used is a ROM (Run of Mine) coal sample located at the stockpile location. The relationship between Total Moisture and the calorific value of coal shows a negative linear correlation where the influence value for a 1% increase in Total Moisture is -71.343 kcal/kg and so is between Ash and the calorific value of coal 1% increase in Ash is -82.588 kcal/kg, which shows a negative linear correlation. Total Moisture increases by 1%, reducing the calorific value of coal by 71 kcal/kg, and increasing Ash content by 1% reduces the calorific value of coal by 83 kcal/kg.
Ichnofossil of Nanggulan Deltaic System: Case Study of Watupuru Cross Section in Kulon Progo, Central Java, Indonesia Nuraini , Siti; Syafri, Ildrem; Muljana, Budi; Sudradjat, Adjat
Indonesian Journal on Geoscience Vol. 11 No. 2 (2024)
Publisher : Geological Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17014/ijog.11.2.295-312

Abstract

The Nanggulan Formation in Kulon Progo, Yogyakarta, Indonesia, is rich in ichnofossils as observed in a cross-section of the Watupuru River. This research aims to explore the relationship between ichnogenera, their behaviours and patterns during the deposition of the Nanggulan Formation in the Middle to Upper Eocene period. The study involved analyzing measured sections along the Watupuru River, paleocurrent measurements, and palynology. Seventeen ichnogenera were identified and linked to seven depositional facies within the Nanggulan Formation, i.e. Nummulites bank, prodelta, strand plain, delta front, delta plain, sandflat, and fluvial sand, categorized into autochthonous and allochthonous rock units. Allochthonous rocks, like tempestite and turbidite, were discovered within the autochthonous Nanggulan Formation with ichnogenera present in both types of rocks. Ichnofossils associated with the prodelta facies in autochthonous rocks included into Bergaueria, Siphonichnus, Phycodes, Trypanites, Treptichnus, Teredolites, Chondrites, and Thalassinoides, tend to indicate a muddy suspension environment. In contrast, the delta plain facies (FDP) indicating a calm oxidizing environment with ichnogenera contents like Teredolithes, Bergaueria, Scoyenia, Aulichnitus, Helminthopsis, Chondrites, Gastrochaelites, Ophiomorpha, and Siphonichnus were recognized. Factors influencing ichnofossil diversity include lighting, behaviour or adaptation to the environment, sedimentation rate, current control, and burrow infilling. The diversity of ichnofossils in allochthonous tempestite layers was influenced by post-catastrophic storm events. Barren ichnogenera at the base of tempestite layers indicated early storm surges, while the upper layers contained diverse ichnogenera such as Gastrochaelites, Psilonichnus, Bergaueria, and Planolites in the delta front facies (FDF). Tempestite layers in the sandflat facies (FSF) containing ichnogenera such as Thalassinoides, Bergaueria, Rhizocoralleum, Planolites, Cylindrichnus, and Siphonichnus, tend to show a favorable environment for organism post-storm.
Secondary Enrichment of REE in Weathered Granite, South Bangka, Indonesia Tampubolon, Armin; Syafri, Ildrem; Rosana, Mega Fatimah; Yuningsih, Euis Tintin
Indonesian Journal on Geoscience Vol. 11 No. 1 (2024)
Publisher : Geological Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17014/ijog.11.1.141-165

Abstract

Rare earth elements (REEs) are essential materials for the manufacture of advanced technology. Secondary REE indications were found in alluvial and lateritic tin deposits within Southeast Asia Tin Belt. This study aims at the REE enrichment of weathering profiles underlain by Toboali Pluton of the main range S-type granite of this belt. Granite and weathering samples were collected and analyzed using XRF, ICP-MS/OES, XRD, SEM-EDX, and EPMA. The Chondrite-normalized REE patterns of granite in Toboali showed enrichment in REE with the highest value of 1,126 ppm. The Toboali Pluton is enriched in LREE and depleted in HREE. The enrichment of REE from the upper to lower horizon of weathering profiles was pointed out by the increase in REE values from a range of 156-188 ppm (horizon B) to 196-268 ppm (horizon C) in Toboali, and from a range of 230-330 ppm (horizon B) to 342-450 ppm (horizon C) in Air Gegas. These coincided with the presence of kaolinite with elevated REE and CeO2 in horizon C of weathering profile. Leaching test result proved that kaolinite plays a role in REE enrichment in the weathering profile through ion adsorption mechanisms in the Air Gegas. The weathering process of REE fluoro-carbonate (bastnäsite-(Ce)) and parisite-(Ce) in granite is believed to contribute in enrichment due to its high dissolution rate, which enhances kaolinite adsorption. In contrast, REE phosphates such as monazite-(Ce) and xenotime-(Y), because of their strong resistance and low solubility, are thought to be only slightly soluble, and most of these minerals remain in Toboali weathering products.
Enhanced 3D Seismic Image Resolution by Applied Attributes for Improved Carbonate Reservoir Characterization in Karawang Region, North West Java Sudarsana, Muhammad Rizki; Syafri, Ildrem; Agus Nur, Andi; Abdurrokhim, Abdurrokhim
Indonesian Journal on Geoscience Vol. 12 No. 3 (2025)
Publisher : Geological Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17014/ijog.12.3.401-412

Abstract

The study focuses on the enhancement of 3D seismic data to improve the interpretation of carbonate growth phases within Middle Miocene limestone formations in the Karawang region, north west Java. By applying a sequential workflow of various seismic attributes, including the second derivative, phase shift, frequency filter, structural smoothing, and iterative trace Automatic Gain Control (AGC), the vertical resolution of seismic events is significantly improved, from an initial dominant frequency of 22 Hz (38 m tuning thickness) to a final effective dominant frequency of 33 Hz after all enhancements. These enhancements facilitate a clearer delineation of stratigraphy, depositional patterns, and the geometry of carbonate growth cycles. The integration of well data, including wireline logs and synthetic seismograms, with enhanced 3D seismic sections provides a comprehensive understanding of subsurface features and porosity development in the target area. The enhanced data enabled the identification of four distinct carbonate growth phases, revealing complex thickness variations and depositional architectures controlled by sea-level fluctuations. This integrated approach demonstrates the critical role of optimized seismic attribute application for detailed carbonate reservoir characterization and optimizing well placement for hydrocarbon exploration and exploitation.
TIPE INTERVAL T2- HUMMOCKY PADA ENDAPAN BADAI (TEMPESTIT), FORMASI NANGGULAN, PEGUNUNGAN KULON PROGO, YOGYAKARTA Nuraini, siti; Syafri, Ildrem; Muljana, Budi; Sudradjat , Adjat
KURVATEK Vol 10 No 2 (2025): Energy Management and Sustainable Environment
Publisher : Institut Teknologi Nasional Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33579/krvtk.v10i2.5800

Abstract

The composition of storm deposit layers (tempestites) is described as a normal sedimentary deposit or fining upward-deposit, divided into 3 units: the lower part, the middle part, and the upper part. The lower part is characterized by coarse clastics, the middle part known as T2 consists of a combination of hummocky and swalley layers containing finer clastics with good sorting. The upper part shows deposition of layering in increasingly calm current conditions with fine clastics: clay. The T2 interval is often considered a characteristic of turbidite deposit models due to gravity flow. However, on the other hand, the nature of storm-induced currents (hummocky-swalley) is more varied due to the role of 3 controlling currents: oscillatory currents, bottom currents, and combined currents. This study will investigate the characteristics of storm interval T2 (tempestites) in the Nanggulan Formation. The method applied is to generate stratigraphic sections for 3 sections (Kali Clumprit, Watupuru, and Songgo), age correlation and of paleocurrents analysis. Storm deposits are found in the Middle Eocene-aged Nanggulan Formation, showing a polymodal direction with opposing and branching within T2 interval. This pattern reflects two opposing directions: bottom currents and storm oscillatory currents. On the other hand, a combination current emerges, branching off from the main current pattern. The T2 Watupuru layer consists of overlapping hummocky layers that extend in a northwestward direction, indicating an ancient coastal or land area.
Co-Authors A. Sudradjat A. Sudradjat A. Sudradjat Abdurrokhim Almabrury Abdurrokhim ⠀ Abdurrokhim, . Achmad Noerkhaerin Putra Adi Hardiyono Adjat Sudradjat Adjat Sudradjat Adjat Sudradjat Adjat Sudradjat Adjat Sudradjat Adjat Sudradjat Adjat Sudrajat Adjat Sudrajat Adriano Mazzini Agus Didit Haryanto Agus Didit Haryanto -, Agus Didit Haryanto Agus Nur, Andi Agustiany, Irfani Agustina Djafar Agustinus, Eko Tri Sumarnadi Agustya Agustya Ahadi Ahmat Lamburu Ahmad Luthfi Aini, Hana Nur Ajat Sudrajat Almun Madi Amitama, Emilia Bunga Andi Agus Nur Andi Agus Nur, Andi Agus Antonius Bambang Yuniarto -, Antonius Bambang Yuniarto Aprillia, Belinda Rizka Ardiansyah, Reza Arief Prabowo Asep Mohamad Ishaq Shiddiq Aton Patonah Awaludin, Winarno Benyamin Benyamin Benyamin Benyamin, Benyamin Benyamin, Benyamin Billy G. Adhiperdana Bonar Tua Halomoan Marbun Brian Christiantoro Budhy Agung Budi Muljana Budiadi, E. Christiantoro, Brian Deni Wahyuadi Denis, Mutebi Deny Setiady Dicky Muslim Djadjang Jedi Setiadi Djajang Sukarna Dwandari Ralanarko Dwandari Ralanarko E. T. Paripurno E. T. Paripurno Edy Sunardi Eko Tri Sumarnadi Agustinus Eko Tri Sumarnadi Agustinus Electricia, K.S. Elfitra, Dhanu Embara, Patra Emi Sukiyah Emy Sukiyah Euis Tintin Yuningsih Euis Y. Yuningsih, Euis Y. Evaristus Budiadi F. G, Aiwoy Fachrudin, Kurnia Arfiansyah Fadhly, Ahmad Febri Hirnawan Febriwan Mohamad Febriwan Mohammad, Febriwan Febyani, Siska Firman Herdiansyah, Firman G. Hartono G. Hartono Ginanjar, Asep Hadian, Muhamad Sapari Dwi Hadian, Muhamad Sapari Dwi Hana Morina, Hana Hananto kurnio Hananto Kurnio Hartawi Riskha Hartawi Riskha, Hartawi Hartono, G. Hartono, Udi Haryadi Permana Hastowo Resesiyanto Hendarmawan Hendarmawan Heri Hermiyanto Zajuli Heri Hermiyanto Zajuli, Heri Hermiyanto Hermes Panggabean Hermes Panggabean Hermes Panggabean Herry -, Herry Hilarius Rodriguez Hilarius Rodriguez, Hilarius Hill Gendoet Hartono Hutabarat, Johannes ilmi, irpan Iqbal Ramadhan, M. Iqbal, M. Irfani Agustiany Irzon, Ronaldo Irzon, Ronaldo Iskandar Zulkarnain Ismawan Ismawan Ismawan Ismawan, Ismawan Iwan Setiawan Januar Arifin Johanes Hutabarat Johanes Hutabarat Johannes Hutabarat K, Mohammad Fatahillah Pradana Kapid, Roebiyanto Karyono Karyono Kuntadi Nugrahanto Kurnia Arfiansyah Kurnia Arfiansyah, Kurnia kurnio, Hananto kurnio, Hananto Lia Jurnaliah Lili Fauzielly M. Iqbal M. Iqbal Manwarjit, Manwarjit Marbun, Bonar Tua Halomoan Masturyono Masturyono Mayasari, Verna Mega F. Rosana, Mega F. Mega Fatimah Rosana Mega Fatimah Rosana Moeh. Ali Jambak Moeh. Ali Jambak, Moeh. Ali Moh. Heri Hermiyanto Zajuli Moh. Heri Hermiyanto Zajuli Muhamad Sapari Dwi Hadian Muhammad Kurniawan Alfadli Muhammad Zulfikar Muhammad Zulfikar Nana Sulaksana Nana Suwarna Nana Suwarna Nana Suwarna Nanda Natasia Nazar Nurdin Noor Cahyo Dwi Aryanto Noor Cahyo Dwi Aryanto Novianti Wahyuni Purasongka, Novianti Wahyuni Nuarihidayah, Gilang Diesty Nugroho, Sigit Dwi Nuraini , Siti Paripurno, E. T. Petra Wattimury Prabowo, Arief Pranowo Nugroho Pranowo Nugroho Prasetio, Rasi Prasetio, Rasi Prasetya, Muhammad Nurul Huda Purnama Sendjaja Purnama Sendjaja Puspita, Ramelia Eka Rahmola, Wiryadi Rizkiputra Ralanarko, Dwandari Ramzis, Novaldo Rasi Prasetio Resesiyanto, Hastowo Reza Ardiansyah Reza Ardiansyah Ridho Kresna Wattimena Ridho Kresna Wattimena Rivaldy, Mohammad Rodriguez, Hilarius Roebyanto Kapid Ronaldo Irzon Ronaldo Irzon Ronaldo Irzon Rusman Rinawan -, Rusman Rinawan Satrio Satrio Satrio, Satrio Satrio, Satrio Sendjaja, Purnama Sendjaja, Purnama Sendjaja, Purnama Shaska Zulivandama Shiddiq, Asep Mohamad Ishaq Siti Nuraini Soffian Hadi Stefanus Suryo Cahyono SUBAGJA, MUHAMAD AGAM Suci Sarah Andriany, Suci Sarah Sudarsana, Muhammad Rizki Sudradjat , Adjat Sudradjat, A. Sudradjat, A. Sudradjat, Adjat Sudradjat, Adjat Sudrajat, Adjat Sugianto, Asep Supriyanto Rohadi Suwarna, Nana Swasty Aninda Piranti Syaiful Alam Syaiful Bachri Tampubolon, Armin Taufan, Yoqi Ali Udaya Kamiludin Udi Hartono Udi Hartono Vijaya Isnaniawardhani Viqnoriva, S.N. Wahyu Sugiarto Wattimury, Petra Wiguna, Purwa Wilda Aini Nurlathifah Winantris Winantris Winarti Winarti Wrahaspati Rulandoko Yan Rizal, Yan Yoga Andriana Sendjaja Yogi Fernando, Yogi Yudi Darlan Yusriyah, Dzakiyah Zakaria, Firman Zarkasyi, Ahmad ZULFAHMI ZULFAHMI Zulfialdi Zakaria, Zulfialdi Zulkarnain, Iskandar ⠀, Abdurrokhim ⠀, Winantris