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All Journal IJOG : Indonesian Journal on Geoscience Jurnal technoscientia Jurnal RISET Geologi dan Pertambangan Seminar Nasional Teknik Kimia Kejuangan Journal of Degraded and Mining Lands Management Eksplorium : Buletin Pusat Pengembangan Bahan Galian Nuklir Jurnal Pengabdian Kepada Masyarakat (Indonesian Journal of Community Engagement) Jurnal Ilmiah Dinamika Rekayasa (DINAREK) UNEJ e-Proceeding Journal of Geoscience, Engineering, Environment, and Technology Jurnal Geologi dan Sumberdaya Mineral (Journal of Geology and Mineral Resources) Jurnal Geomine Indonesian Mining Journal PROMINE Buletin Sumber Daya Geologi Jurnal GEOSAPTA International Journal of Community Service Learning TEKNOLOGIA Al-Ard: Jurnal Teknik Lingkungan KURVATEK Jurnal Abdi: Media Pengabdian Kepada Masyarakat Prosiding Seminar Teknologi Kebumian dan Kelautan (SEMITAN JURNAL TEKNOLOGI TECHNOSCIENTIA Indonesian Journal on Geoscience Indonesian Journal on Geoscience Journal of Applied Geology SRIWIJAYA JOURNAL OF ENVIRONMENT Ophiolite : Jurnal Geologi Terapan Jurnal Locus Penelitian dan Pengabdian International Journal of Hydrological and Environmental for Sustainability INTAN Jurnal Penelitian Tambang Prosiding Seminar Nasional Rekayasa Teknologi Industri dan Informasi ReTII Jurnal Ilmiah Geologi pangea Jurnal Ilmiah Geomatika Jurnal Geologi dan Sumberdaya Mineral (Journal of Geology and Mineral Resources) Asian Journal of Social and Humanities Indonesian Mining Journal Eksplorium : Buletin Pusat Pengembangan Bahan Galian Nuklir

Arifudin Idrus

Departemen Teknik Geologi Fakultas Teknik Universitas Gadjah Mada

Author-ID : 285193

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CHARACTERISTICS AND LIQUEFACTION OF COAL FROM WARUKIN FORMATION, TABALONG AREA, SOUTH KALIMANTAN–INDONESIA Edy Nursanto; Arifudin Idrus; Hendra Amijaya; Subagyo Pramumijoyo
Journal of Applied Geology Vol 5, No 2 (2013)
Publisher : Geological Engineering Department Universitas Gadjah Mada

Since the coal characteristic is the main controlling factors in coal liquefaction, thus five coal seams with different coal rank from Warukin Formation in Tabalong Area, South Kalimantan have been used in this study. Three seams were low rank coal (Wara 110, Wara 120, Wara 200) while two seams were medium rank (Tutupan 210 and Paringin 712). The objectives of this study was to investigate the effect of coal rank on the rate of coal conversion factor. Coal liquefaction was conducted in an autoclave on low pressure (14.7 psi) and temperature 120°C. Experiments were designed with time intervals 30, 60 and 90 minutes, respectively. The average coal properties of seam Wara 110, Wara 120 and Wara 200 were 26.65%, 5.08%, 46.26% and 30.60% for inherent moisture, ash content, volatile matter and. fixed carbon, respectively. In contrast, coal properties for seam Tutupan 210 and Paringin 712 were 18.42%, 1.81%, 23.02% and 35.76% for inherent moisture, ash content, volatile matter and fixed carbon, respectively. The maximum yields for Wara 110, Wara 120 and Wara 200 were 48.60% (30 minutes), 51.27% (60 minutes) and 46.72% (90 minutes). In comparison, Tutupan 210 and Paringin 712 resulted maximum yields of 8.22% (30 minutes), 18.35% (60 minutes), 6.23% (90 minutes). In conclusion, low rank coal has higher yield conversion compared to medium rank coal since it has higher H/C ratio. Keywords: Coal liquefaction, low rank coal, Kalimantan.

HIGH SULFIDATION EPITHERMAL MINERALIZATION AND ORE MINERAL ASSEMBLAGES OF CIJULANG PROSPECT, WEST JAVA, INDONESIA Myo Min Tun; I Wayan Warmada; Arifudin Idrus; Agung Harijoko; Okki Verdiansyah; Koichiro Watanabe
Journal of Applied Geology Vol 6, No 1 (2014)
Publisher : Geological Engineering Department Universitas Gadjah Mada

Cijulang is a high-sulfidation epithermal system hosted in the calc-alkaline rocks of andesite lava and lapilli tuff. Mineralization in the prospect is characterized by pyrite-enargite-gold and associated acid sulfate alteration. Studies on ore and gangue mineral assemblages and their mutual textural relationships were carried out in order to explore the paragenetic sequence of mineralization. Hypogene mineralization primarily occurs in the silicic core and the advanced argillic zone in the form of massive replacement, fracture-filling veinlets, vug-filling, patches and dissemination. Mineralization is apparently controlled by both lithology and structures. Common ore minerals include pyrite, enargite, luzonite, tennantite, chalcopyrite, covellite, galena, emplectite and Te-bearing minerals. The paragenetic study indicates that the epithermal prospect evolved from an early stage of intense acid leaching resulting in the formation of vuggy silica and advantage argillic mineral assemblage which was followed by the sulfides deposition. Two metal stages were identified during ore deposition: an early Fe-As-S stage and the later Cu-Fe-As-S stage. The former stage is char- acterized high-sulfidation state sulfides such as enargite/ luzonite+covellite whereas a later stage of Cu- Fe-As–S is represented by intermediate sulfidation state sulfides assemblage of tennantite+chalcopyrite. Gold is probably introduced in the early stage within the ore system and more abundant in the late stage. Keywords: Cijulang, high-sulfidation, acid sulfate, mineralization, enargite, paragenetic, metal stages

FLUID INCLUSION STUDIES OF THE EPITHERMAL QUARTZ VEINS FROM SUALAN PROSPECT, WEST JAVA, INDONESIA Myo Min Tun; I Wayan Warmada; Arifudin Idrus; Agung Harijoko; Okki Verdiansyah; Koichiro Watanabe
Journal of Applied Geology Vol 6, No 2 (2014)
Publisher : Geological Engineering Department Universitas Gadjah Mada

Sualan prospect is located at Talegong Sub-district of Garut Regency, West Java, Indonesia. The area constitutes calc-alkaline volcanic and volcaniclastic rocks of Tertiary age. The rocks have experienced regional propylitic and argillic alteration. Fluid inclusions from quartz veins were studied in order to constrain the nature, characteristics and evolution of fluids. Microthermometric measurements on fluid inclusion were carried out by freezing and heating experiment. Temperatures of homogenization (Th) and final melting of ice (Tm) were measured for primary, liquid-dominated, two-phase inclusions. The values of Th range from 160°C to 210°C and salinities range from 0.35 to 4.96 wt.% NaCl equiv. Formation temperature of the quartz veins are estimated at 180°C and 190°C and paleo-depth of formation are at 80m and 140m, respectively. Microthermometric data indicates that fluid mixing and dilution were important processes during the evolution of hydrothermal system. Based on fluid inclusion types, microthermometric data, trapping temperature, paleo-depth, texture of quartz and hydrothermal alteration types, quartz veins from prospect were developed under epithermal environment. Keywords: Quartz vein, fluid inclusions, microthermometry, salinities, formation temperature, paleo-depth, epithermal, Sualan prospect.

Hydrothermal Alteration and Mineralization of the Randu Kuning Porphyry Cu-Au and Intermediate Sulphidation Epithermal Au-Base Metals Deposits in Selogiri, Central Java, Indonesia Sutarto Sutarto; Arifudin Idrus; Agung Harijoko; Lucas Donny Setijadji; Franz Michael Meyer; Sven Sindern; Sapto Putranto
Journal of Applied Geology Vol 1, No 1 (2016)
Publisher : Geological Engineering Department Universitas Gadjah Mada

The Randu Kuning Porphyry Cu-Au prospect area is situated in the Selogiri district, Wonogiri regency, Central Java, Indonesia, about 40 km to the South-East from Solo city, or approximately 70 km east of Yogyakarta city. The Randu Kuning area and its vicinity is a part of the East Java Southern Mountain Zone, mostly occupied by both plutonic and volcanic igneous rocks, volcaniclastic, silisiclastic and carbonate rocks. Magmatism-volcanism products were indicated by the abundant of igneous and volcaniclastic rocks of Mandalika and Semilir Formation. The Alteration zones distribution are generally controlled by the NE–SW and NW–SE trending structures. At least eight types of hydrothermal alteration at the Randu Kuning area and its vicinity had been identified, i.e. magnetite + biotite ± K-feldspar ± chlorite (potassic), chlorite + sericite + magnetite ± actinolite, chlorite + magnetite ± actinolite ± carbonate (inner propylitic), chlorite + epidote ± carbonate (outer propylitic), sericite + quartz + pyrite (phyllic), illite + kaolinite ± smectite (intermediate argillic), illite + kaolinite ± pyrophyllite ± alunite (advanced argillic) and quatz + chlorite (sillisic) zones. The Randu Kuning mineralization at Selogiri is co existing with the porphyry Cu-Au and intermediate sulphidation epithermal Au-base metals. Mineralization in the porphyry environment is mostly associated with the present of quartz-sulphides veins including AB, C, carbonate-sulphides veins (D vein) as well as disseminated sulphides. While in the epithermal prospect, mineralization is particularly associated with pyrite + sphalerite + chalcopyrite + carbonate ± galena veins as well as hydrothermal breccias. The Randu Kuning porphyry prospect has copper gold grade in range at about 0.66–5.7 gr/t Au and 0.04–1.24 % Cu, whereas in the intermediate sulphidation epithermal contain around 0.1–20.8 gr/t Au, 1.2–28.1 gr/t Ag, 0.05–0.9 % Zn, 0.14–0.59 % Pb and 0.01–0.65 % Cu.

Occurrences and Characteristics of Gold Mineralization in Rampi Block Prospect, North Luwu Regency, South Sulawesi Province, Indonesia Arifudin Idrus; Suaib Mansur; Ahmad Ahmad; Rahmayuddin Rahmayuddin; Abdul Abdul
Journal of Applied Geology Vol 1, No 2 (2016)
Publisher : Geological Engineering Department Universitas Gadjah Mada

This study is aimed to identify the occurences, characterisatics and genetic type of gold mineralization, and to elucidate the preliminary gold potential in the study area. Research method includes field observation of prospect geology, hydrothermal alteration and ore mineralization. Laboratory analysis consists of petrography, ore microscopy and ore chemistry. Geologically, quartz ± gold veins were found in Rampi block prospect, which are mainly hosted by metamorphic and metasediment rocks. The quartz veins has structurally segmented with massive, brecciated and laminated textures. Orientation and distribution of veins is controlled by NW–SE and NE–SW trending structures. Sulfides are present with minor abundance (<1 %). Pyrite is obviously observed and partially oxidized. Arsenopyrite and stibnite are minor, while basemetal (Pb, Zn) sulfides are very rare. Gold mineralization occurred in quartz veins and closely related to silica-clay and silicic alteration. Gold grade varies from 0.1 to 11 ppm Au (29 samples). Quartz veins contained high gold grade (>9 ppm) commonly show laminated and brecciated texture and has been undergone a supergene enrichment. According to several characteristics above, gold deposit in Rampi block prospect tends to meet the criteria of orogenic/mesothermal gold type (cf. Groves et al., 2003). The deposit shares similarities with Awak Mas prospect, which is already confirmed to be a mesothermal type in Luwu district (cf. Querubin and Walters, 2011). Therefore, discoveries of economic mesothermal gold deposits are still open in the metamorphic terrains, and thus, it requires a systematic exploration based on the genetic model of the deposit.

GEOLOGY AND ORE MINERALISATION OF NEOGENE SEDIMENTARY ROCK HOSTED LS EPITHERMAL GOLD DEPOSIT AT PANINGKABAN, BANYUMAS REGENCY, CENTRAL JAVA, INDONESIA Arifudin Idrus; Fahmi Hakim; I Wayan Warmada; Mochammad Aziz; Jochen Kolb; Franz Michael Meyer
Journal of Applied Geology Vol 7, No 2 (2015)
Publisher : Geological Engineering Department Universitas Gadjah Mada

Low suphidation (LS) epithermal gold deposits were recently found in the Paningkaban area, Central Java province, Indonesia, with more than ﬁve hundred artisanal gold miners currently operating in the area. This study is aimed to understand the geological factors controlling the gold mineralization and to characterize the alteration and ore mineralogy of the deposit. Several epithermal veins/veinlets trending N–S, NW–SE, and NE–SW are hosted by Tertiary turbiditic volcanoclastic sedimentary rocks of the Halang formation. This formation is composed of looping gradation of sandstone and siltstone units. Pre- and syn-mineralization structures such as extension joints, normal sinitral fault and sinitral fault control the gold mineralization. Fault movements formed dilational jogs manifested by NW-SE-trending en-echelon tension gash veins. Four main alteration zones are identiﬁed: (a) phyllic, (b) argillic, (c) sub propylitic and (d) weak subpropylitic. Ore minerals consist of native gold, electrum, native silver, pyrite, chalcopyrite, sphalerite, galena, arsenopyrite, cubanite, marcasite, covellite and tennantite, which are commonly associated withargillic alteration. Vein structures such as massive, swarm and low angle veins, stockwork and veins dispersed in diatreme breccia are present. Normal banded, cockade, crustiform, bladed carbonates as well as, comb and saccharoidal features are the typical vein textures. It is noteworthy that the veins are basically composed of carbonate with minor quartz at gold grades of up to 83 g/t Au. Based on the vein structures and textures, four stages of ore mineralization were developed consisting of (a) early stage (ﬂuidized breccia and quartz vein), (b) middle stage (carbonate base metal), (c) late stage (late carbonate), and supergene stage. Gold mineralization originated mainly during middle and late stages, particularly in association with cockade, crustiform, bladed carbonate base metal veins. Based on those various features, the LS epithermal deposit in the study area is categorized as carbonate-base metalgold mineralization type.

VEINS AND HYDROTHERMAL BRECCIAS OF THE RANDU KUNING PORPHYRY Cu-Au AND EPITHERMAL Au DEPOSITS AT SELOGIRI AREA, CENTRAL JAVA INDONESIA Sutarto Sutarto; Arifudin Idrus; Agung Harijoko; Lucas Donny Setijadji; Franz Michael Meyer
Journal of Applied Geology Vol 7, No 2 (2015)
Publisher : Geological Engineering Department Universitas Gadjah Mada

The Randu Kuning prospect is situated at Selogiri area, Wonogiri, Central Java, Indonesia. This location is about 40 km to the south-east from Solo city or approximately 70 km east of Yogyakarta city. Many Tertiary dioritic rocks related alterationmineralisation were found at the Randu Kuning area and its vicinity, including hornblende microdiorite, hornblende-pyroxene diorite and quartz diorite. Mineralisation type of the Randu Kuning prospect was interpreted as porphyry Cu-Au and a number epithermal Au-base metals deposits in its surrounding. The closed existing of porphyry Cu-Au and epithermal Au-base metals type deposits at the Randu Kuning area produced a very complex of veins and hydrothermal breccias crosscutting relationship. A lot of porphyry veins types were found and observed at the Randu Kuning area, and classiﬁed into at least seven types. Most of the porphyry veins were cross cut by epithermal type veins. Many epithermal veins also are found and crosscut into deeply porphyry vein types. There are genetically at least two type of hydrothermal breccias have recognized in the research area, i.e. magmatic-hydrothermal breccia and phreatomagmatic breccia. Magmatic hydrothermal breccias are mostly occured in contact between hornblende microdiorite or quartz diorite and hornblende-pyroxene diorite, characterized by angular fragments/clasts supported or inﬁlled by silicas, carbonates and sulphides matrix derived from hydrothermal ﬂuids precipitation. Phreatomagmatic breccias are characterized by abundant of the juvenile clasts, indicated contact between hot magma with ﬂuid or water as well as many wall rock fragments such as altered diorites and volcaniclastic rock clasts set in clastical matrix. The juvenile clasts usually compossed by volcanic glasses and aphanitic rocks in rounded-irregular shape. Both veining and brecciation processes have an important role in gold and copper mineralisation of the Randu Kuning Porphyry Cu-Au and epithermal Au-base metals deposits, mostly related to the presence of quartz veins/veinlets containing signiﬁcant sulphides, i.e., quartz with thin centre line sulphides (Abtype) veins, pyrite±chalcopyrite (C type) veinlets, pyrite+quartz± chalcopyrire±carbonate (D type) veins of porphyry types as well as epithermal environment quarts+ sulphides+carbonate veins.

Geology, Geochemistry and Hydrothermal Fluid Characteristics of Low Sulfidation Epithermal Deposit in the Sangon Area, Kokap, Special Region of Yogyakarta Pranayoga Pramumijoyo; Arifudin Idrus; I Wayan Warmada; Kotaro Yonezu
Journal of Applied Geology Vol 2, No 1 (2017)
Publisher : Geological Engineering Department Universitas Gadjah Mada

On the basis of the previous studies and reconnaissance survey in the studyarea covering Sangon, Kalirejo, Kokap Sub-district, Kulon Progo Regency, Special Region of Yogyakarta, it reveals some facts of the occurrence of quartz veins with massive, crustiform, comb, drusy cavity, saccharoidal, granular, and reniform/mammillated textures, the appearance of lattice bladed barite and hydrothermal breccia veins. Referring to those characteristics, the deposit type in the study area is interpreted to be low sulfidation epithermal type. This study is aimed to understand and characterize the geological condition, rock and ore geochemistry and the mineralizing fluids. The alteration and ore mineralization are almost observed in entire rock units particularly the intrusive andesite 1. Their formation is controlled by the tension fractures (NW–SE and NE–SW) which associate with sinistral strike slip faults (NE–SW), dilational jog (NNW–SSE), oblique normal fault (WNW–ESE), and predictable normal fault at the NE of study area (NW–SE). The alteration zones are developed to be silica-clay (quartz-illite-kaolinite-kaolinite/smectite), argillic (smectite-illite/smectite), and propylitic (chlorite-calcite±epidote). The precipitationof ore minerals is controlled by boiling, mixing, and wall-rock alteration, and canbe found in the quartz veins (quartz-adularia-sericite) and disseminated in the alteration zones, which their high variability is only can be found in the quartz veins, including pyrite, sphalerite, chalcopyrite, galena, marcasite, and arsenopyrite. Based on the ICPAES measurement of 5 quartz vein samples, the Cu, Zn, Pb, and As grade reach about 5,171 ppm, 8,995 ppm, 6,398 ppm, 34.1 ppm, and 1,010.5 ppm, respectively. Gold is not detected. Fluid inclusion microthermometric analysis shows Th of 242.1–257.6 °C and salinity of 1.57–3.87 wt.% NaCl equiv., which indicate a depth below the paleosurface of 384–516 m, and pressure of 101.7–136.6 bar. The ore deposit in the study area is interpreted to be a deep basemetal low sulfidation epithermal type. Gold might be depleted in this epithermal type.

Hydrothermal Alteration of High Sulfidation Epithermal Deposits in Secang Area, Tulungagung, East Java, Indonesia Anastasia Dewi Titisari; Septyo Uji Pratomo; Arifudin Idrus
Journal of Applied Geology Vol 5, No 2 (2020)
Publisher : Geological Engineering Department Universitas Gadjah Mada

This research aims to determine geological condition and alteration in an epithermal high sulfidation mineralization as an initial guide for further exploration stages. Detailed geological mapping with scale of 1:12,500 is conducted to identify geological aspects and distribution of alteration zones. Selected rocks samples were prepared for laboratory analysis which are petrography, XRD (X-Ray Diffraction), and FA-AAS (Fire Assay-Atomic Absorption Spectrometry) analyse. Geological condition of the study area consists of six rock units including andesite lava, andesite breccia, diorite intrusion, polymict breccia, limestone, and alluvial deposit. Geological structures found are left strike-slip fault with right strike-slip fault as accompany. Result of XRD analysis shows the presence of clay minerals group: smectite, kaolinite, illite, diaspore, alunite, and pyrophillite. The alteration zones of study area are propylitic, argillic, advance argillic, and silisification zones. The further exploration stage is recommended to focus at the southwest and northeast of study area.

Low-Sulfidation Epithermal Carbonate-Base metal-Gold Mineralization Hosted by Tertiary Sedimentary Rocks in Bastem Prospect, Luwu District, Sulawesi Island, Indonesia: A Preliminary Study Arifudin Idrus; Irzal Nur; Sufriadin Sufriadin; Fadlin Fadlin; Indra Sanjaya; Rohaya Langkoke
Journal of Applied Geology Vol 5, No 1 (2020)
Publisher : Geological Engineering Department Universitas Gadjah Mada

In Indonesia, gold is typically mined out from epithermal, porphyry and skarn deposit types occurred within volcanic belts along magmatic arc or active continental margin setting. Numerous gold prospects, however, are recently discovered in association with metamorphic and sedimentary rocks. This paper is aimed to discuss a preliminary study on the occurrences and characteristics of the sedimentary rock-hosted low-sulfidation (LS) epithermal gold mineralization in Bastem (Bessengan Tempe) prospect, Luwu district, Sulawesi Island, Indonesia. Detailed geological and hydrothermal alteration mapping was performed to understand the distribution and characteristics of ore mineralization. Representative ore samples taken were analysed for ore chemistry by means of Fire Assay – Atomic Absorption Spectrometry (FA-AAS) and Acid Geochemical Digest - Atomic Absorption Spectrometry (GA-AAS). The results from this work that the Bastem prospect is stratigrapically occupied by Tertiary sedimentary rocks of Toraja formation, which is adjacent to volcanic rocks of Lamasi formation. Gold-bearing quartz±carbonate veins are hosted by mudstone and siltstone of Toraja formation. The quartz-carbonate veins show a typical LS epithermal open space filling texture containing erratic gold grade of up to 7.16 g/t with relatively high besemetals (Pb and Zn) grades of up to >0.4 and >1%, respectively. Based on those various features, the LS epithermal deposit is categorized as “carbonate-basemetal-gold mineralization type”, which might be originated in back arc rift/basin setting. This ‘unconventional’ sedimentary rock hosted-gold mineralization type would be the new target of gold exploration in Indonesia.

Co-Authors A. Harijoko A. Harijoko A. Imai A. Imai A. M. Imran Abdul Abdul Abdul, Abdul Abrar, Miftahul Afrilita, Afrilita Agung Harijoko Agung Harjoko Agus Prasetya Ahmad Ahmad Ahmad Ahmad Akira Imai Alyna Azarine Aminatun, Tien Anastasia Dewi Titisari Anjarwati, Retno Anna Rakhmawati Araki, Naoto Arfan Siregar Asfaro, Raden Muhammad Asih, Yekti Asrafil Asrafil Ati, E. M. Atmoko, Didik Dwi Atmoko, Didik Dwi Bambang Priadi Cendi D. P. Dana Chun-Kit Lai Dana, Cendi D. P. Danny, Rama Danny, Rama Dian Yesy Fatimah Didik Dwi Atmoko Didik Dwi Atmoko Djoko Wintolo Djoko Wintolo Djoko Wintolo, Djoko Donatus Hendra Amijaya Dwi Fitri Yudiantoro E. M. Ati E. M. Ati Eddy Winarno Edy Nursanto Edy Nursanto Edy Nursanto Ernowo Ernowo Ernowo Ernowo Ernowo Harjanto Ernowo Harjanto, Ernowo Ernowo, Ernowo Esti Handayani Esti Handayani F. M. Meyer F. M. Meyer F. Thamba F. Thamba Fadlin Fadlin Fadlin Fadlin Fadlin Fadlin Idrus Fadlin, Fadlin Faesal, Andi Faruqi, M.Dzulfikar Feddy Yurniadi Fenny Tamba Ferian Anggara Franklin Franklin Franklin Franklin Franklin, Franklin Franz M Meyer Franz Michael Meyer Franz Michael Meyer Franz Michael Meyer, Franz Michael Godang, Shaban Godang, Shaban Hakim, Fahmi Hakim, Fahmi Hamzah, Wildan Nur Handayani, Esti Harijoko, A. Harjoko, Agung Harjoko, Agung Hasria Hasria Hasria Hasria Hasria Hasria, Hasria Heimbach, Ivano Herfien Samalehu Herfien Samalehu Hermansyah, Wahyu Hidayatullah Hidayatullah Hill Gendoet Hartono Himawan Tri Bayu Murti Petrus Hinode, Hirofumi HTBM Petrus I Gde Sukadana I Gde Sukadana I Gede Budi Irawan Budi Irawan I Wayan Warmada I. Nur I. Nur I. Nur Idrus, Fadlin Ignas A. Meak Ilmawan, Ilham Imai, A. Imai, Akira Imam Suyanto Indra Sanjaya Indra Sanjaya Irwan Endrayanto, Irwan Irzal Nur Irzal Nur, Irzal Isyqi Isyqi Iwan Setiawan Iwan Setiawan Iwan Setiawan Iwan Setiawan Jochen Kolb Johan Arif Johan Arif, Johan Kaharuddin Kaharuddin Kaharuddin, Kaharuddin Kant, Win Khant, Win Koichiro Watanabe Koichiro Watanabe Koichiro Watanabe, Koichiro Kolb, Jochen Kotaro Yonezu Kris Ramlan Kurniawan, Winarto L. D. Setijadji L. D. Setijadji Lai, Chun-Kit Leeuwen, Theo Van Lia Novelia Agung Lia Novelia Agung, Lia Novelia Lucas D Setijadji Lucas Donny Setijadji Mansur, Suaib May Thwee Aye Meak, Ignas A. Mersi Abadi Meyer, F. M. Meyer, Franz M Meyer, Franz M Mochammad Aziz Mochammad Aziz Mochammad Aziz, Mochammad Moetamar Moetamar Moetamar Moetamar Moetamar, Moetamar Mohamad Anis Mohamad Anis Mohamad Anis Mohamad Anis Mohamad Anis, Mohamad Mudinillah, Adam Muhammad Arba Azzaman Muhammad Muhsin Al Hakim Myaing, Yu Yu Myo Min Tun Myo Min Tun Naoto Araki Nhatinombe, Hernani Vitorino Nugroho Imam Setiawan Nur, I. Nur, I. Nurkhamim Nurkhamim Nurkhamim Nurkhamim Nurkhamim Okki Verdiansyah Okki Verdiansyah Okki Verdiansyah Okki Verdiansyah Pambudi, Setia Por, Vannak Pramumijoyo, Pranayoga Pramumijoyo, S. Pranayoga Pramumijoyo Prasetyawati Umar, Emi Prastistho, Widyawanto Pratiwi, Fadiah Pratomo, Septyo Uji Priadi, Bambang Prihatmoko, Sukmandaru Putranto, Sapto Putranto, Sapto Putranto, Sapto Raden Isnu Hajar Sulistyawan, Raden Isnu Hajar Rahmah, Yuyun Prihatining Rahmayuddin Rahmayuddin Rahmayuddin, Rahmayuddin Rama Danny Rangga Bintang Ardaraja Rangga Bintang Ardaraja Resurrection, Augustus C. Retno Anjarwati Retno Anjarwati Rika Ernawati Rika Ernawati Riyadi, Hasan Rizal, Khairu Rohaya Langkoke Rohaya Langkoke S. Pramumijoyo S. Pramumijoyo Samalehu, Herfien Sapto Putranto Sapto Putranto Satriadi Abdullah Satriadi Satriadi SATRIYAS ILYAS Setia Pambudi Setiawan, Iwan Setiawan, Iwan Setijadji, L. D. Setijadji, Lucas D Setijadji, Lucas D Shaban Godang Shaban Godang Simbolon, Doly Sindern, Sven Siti Rahmawati H. Budiawan SRI ATUN Suaib Mansur Subagyo Pramumijoyo Subagyo Pramumijoyo Subagyo Pramumijoyo Subagyo Pramumijoyo, Subagyo Subagyo Subagyo Subagyo Subagyo Subagyo Subagyo Subagyo Subagyo Sufriadin, Sufriadin Sujangka, Arsyad Sukadana, I Gde Sukamandaru Prihatmoko Sukamandaru Prihatmoko, Sukamandaru Sukmandaru Prihatmoko Sukmandaru Prihatmoko Supit, Jance Mudjani Suryawan, Eka Harris Sutarto Sutarto Sutarto Sutarto Sutarto Sutarto Sutarto Sutarto Sutarto Sutarto Sutijan Sven Sindern Syafruddin Maula Syafruddin Maula Takahashi, Ran Takahashi, Ryohei Tamba, Fenny Thamba, F. Theo Van Leeuwen Theresia Fernandha Samuels Thwee Aye, May Timotius, Daniel Tun, Myo Min Ubaidillah, Aji Syailendra Wahyu Widodo Wahyu Widodo Waterman Sulistyana Bargawa Wawan Budianta Wibowo, Decka Pynka Win Kant Win Khant Wiwit Suryanto Yonezu, Kotaro Yu Yu Myaing Yuni Kusumastuti, Yuni Yurniadi, Feddy Yuyun Prihatining Rahmah

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