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All Journal Bulletin of Scientific Contribution : Geology IJOG : Indonesian Journal on Geoscience Jurnal RISET Geologi dan Pertambangan Geoscience Journal 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) Buletin Sumber Daya Geologi Indonesian Journal on Geoscience Indonesian Journal on Geoscience Jurnal Geologi dan Sumberdaya Mineral (Journal of Geology and Mineral Resources) Journal of Geosciences and Applied Geology
Euis Tintin Yuningsih
Fakultas Teknik Geologi Universitas Padjadjaran
Chemistry Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Education Energy Engineering Environmental Science Physics

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Epithermal Gold-Silver Deposits in Western Java, Indonesia: Gold-Silver Selenide-Telluride Mineralization Yuningsih, Euis Tintin; Matsueda, Hiroharu; Rosana, Mega Fatimah
Indonesian Journal on Geoscience Vol 1, No 2 (2014)
Publisher : Geological Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17014/ijog.1.2.71-81

Abstract

DOI: 10.17014/ijog.v1i2.180The gold-silver ores of western Java reflect a major metallogenic event during the Miocene-Pliocene and Pliocene ages. Mineralogically, the deposits can be divided into two types i.e. Se- and Te-type deposits with some different characteristic features. The objective of the present research is to summarize the mineralogical and geochemical characteristics of Se- and Te-type epithermal mineralization in western Java. Ore and alteration mineral assemblage, fluid inclusions, and radiogenic isotope studies were undertaken in some deposits in western Java combined with literature studies from previous authors. Ore mineralogy of some deposits from western Java such as Pongkor, Cibaliung, Cikidang, Cisungsang, Cirotan, Arinem, and Cineam shows slightly different characteristics as those are divided into Se- and Te-types deposits. The ore mineralogy of the westernmost of west Java region such as Pongkor, Cibaliung, Cikidang, Cisungsang, and Cirotan is characterized by the dominance of silver-arsenic-antimony sulfosalt with silver selenides and rarely tellurides over the argentite, while to the eastern part of West Java such as Arinem and Cineam deposits are dominated by silver-gold tellurides. The average formation temperatures measured from fluid inclusions of quartz associated with ore are in the range of 170 – 220°C with average salinity of less than 1 wt% NaClequiv for Se-type and 190 – 270°C with average salinity of ~2 wt% NaClequiv for Te-type.
Diagnostic Genesis Features of Au-Ag Selenide-Telluride Mineralization of Western Java Deposits Yuningsih, Euis Tintin; Matsueda, Hiroharu; Rosana, Mega F.
Indonesian Journal on Geoscience Vol 3, No 1 (2016)
Publisher : Geological Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17014/ijog.3.1.67-76

Abstract

DOI: 10.17014/ijog.3.1.67-76The ore mineralogy of the westernmost part of West Java such as Pongkor, Cibaliung, Cikidang, Cikotok, and Cirotan are characterized by the dominance of silver-arsenic-antimony sulfosalt with silver selenides and rarely tellurides over the argentite, whereas the eastern part of West Java including Arinem and Cineam deposits are dominated by silver-gold tellurides. Mineralogy of Se-type deposits at Pongkor, Cikidang, Cibaliung, Cisungsang, and Cirotan and Te-type deposits at Arinem and Cineam shows their different geochemical characteristics. Mineralogical and geochemical differences can be explained by variation of physico-chemical conditions that existed during gold-silver deposition by applying the phase relation among sulfide, telluride, and selenide mineral association in the deposits. The relative values of ƒSe2(g), ƒTe(g), and ƒS2(g) control the actual presence of selenide or telluride minerals within the West Java deposits, which also depend on their concentrations in the hydrothermal fluid. Even though the concentration of selenium in the hydrothermal fluid of Te-type deposits might have been similar or even higher than that in the Se-type, early substitution of selenium in the sulfide minerals prevents its concentration in the hydrothermal fluid to the levels for precipitating selenide minerals. Therefore, early sulfide mineral deposition from reduction fluids will not increase the ƒSe2(g)/ƒS2(g) ratio to form selenide minerals in Te-type deposits of Arinem and Cineam, other than selenium-bearing sulfide mineral such as Se-bearing galena or Se-bearing pyrargyrite-proustite.
Morphotectonics of Mount Rendingan Area Related To the Appearances of Geothermal Surface Manifestations Gentana, Dewi; Sulaksana, Nana; Sukiyah, Emi; Yuningsih, Euis Tintin
Indonesian Journal on Geoscience Vol 6, No 3 (2019)
Publisher : Geological Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17014/ijog.6.3.291-309

Abstract

DOI: 10.17014/ijog.6.3.291-309The researched area is situated at Mount Rendingan and its surrounding area, Lampung Province, the southern part of Sumatra Island. It has a big potential of geothermal resource in line with a unique graben like bowl landform and geothermal surface manifestations. This research was carried out using remote sensing and field observation methods. The remote sensing method used topography and Shuttle Radar Topography Mission -Digital Elevation Model (SRTM-DEM) maps to analyze morphotectonic attributes, and the result was validated by morphotectonic data analysis from field observation. The purpose of this research is to evaluate the relation between morphotectonic and the appearances of geothermal surface manifestations. The interpretation of SRTM-DEM and topographic maps are supported by morphotectonic analyses,which indicate that the geothermal surface manifestations in this area are controlled by tectonic activity. It has various levels of lift which are shown by the values of valley height weight ratio (Vf) from 0.16 to 3.31 and the values of mountain front sinuosity (Smf) from 1.05 to 2.09. The morphotectonic characteristics can describe the geological structure activity levels which are reflected in the landform and its rock. The volcanic areas consist of igneous rocks which have small primary permeabilities. However, the development of geological structure can cause fractures in the rock that step in as a medium for passing geothermal fluid from depth to surface. They are found on the fault intersection zone system trending NE-SW and NW-SE, NNE-SSW and NNW-SSE, and WE system directions that indicate the fault system is correlated with the appearances of geothermal manifestations.
KARAKTERISTIK ZONASI BATUAN RESERVOAR BERDASARKAN PETROGRAFI, SERBUK BOR, UJI TEKANAN DAN TEMPERATUR DI LAPANGAN PANAS BUMI SOKORIA, KABUPATEN ENDE, PROVINSI NUSA TENGGARA TIMUR: RESERVOIR CHARACTERISTICS BASED ON PETROGRAPHY, CUTTING, PRESSURE AND TEMPERATURE TEST IN SOKORIA GEOTHERMAL FIELD, ENDE REGENCY, NUSA TENGGARA TIMUR PROVINCE Purbiyantoro, Aldila Jasmine; Agus Didit Haryanto; Euis Tintin Yuningsih; Haris Siagian
Buletin Sumber Daya Geologi Vol. 15 No. 2 (2020): 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.v15i2.291

Abstract

Sokoria Geothermal Field is located at Sokoria Village, Ende Regency, Nusa Tenggara Timur Province. Petrographic analysis and Methylene Blue test (MeB) were carried out to estimate the illite-smectite ratio and occurence of other alteration minerals as indicator for cap rock, transition and reservoir zones. Pressure and temperature test (P&T test) was also performed to determine those zonation. The result concludes the geothermal caprock zone is distributed from the surface to the dept of 700 mVD (meter vertical depth), indicated by medium to high MeB index (20 – 80%), as smectite characteristic temperature up to 100°C. The transition zone is located from the depth of 700 mVD to 1100 mVD, with low MeB index (6 – 20%), as illite and illite–smectite characteristic and well temperature up to 200°C. Reservoir zone is located at 1100 mVD, indicated by very low MeB index (<10%),as characteristic of illite, with first appearance of epidote in well W-1 at 1119 mMD (meter measured depth) and well W–2 at 1338 mMD. P&T test shows reservoir temperature reached 250°C.
KARAKTERISTIK ALTERASI DAN TEKSTUR URAT KUARSA PADA PIT BARANI, CEBAKAN EMAS MARTABE, KABUPATEN TAPANULI SELATAN, PROVINSI SUMATRA UTARA: ALTERATION AND QUARTZ-VEIN TEXTURES CHARACTERISTIC AT BARANI PIT OF MARTABE GOLD DEPOSITS, SOUTH TAPANULI REGENCY, NORTH SUMATRA PROVINCE Nada Salsabila Deva; Yuningsih, Euis Tintin; Fachrudin, Kurnia Arfiansyah; Saala, Nur Afrianti; Triyunita, Ade
Buletin Sumber Daya Geologi Vol. 15 No. 3 (2020): 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.v15i3.303

Abstract

Barani Pit is part of the PT Agincourt Resources Contract of Work, located in Aek Pining Village, Batangtoru District, South Tapanuli Regency, North Sumatra. The Barani Pit is an open pit mine, with epithermal deposit type in the form of veins which host for more concentration of metal elements. This study aims to find out the alteration characteristics and texture variations of quartz veins that are abundant in the Barani Pit area and to identify the texture of quartz veins carrying economic mineralization. The pit mapping method is used to get samples, and alteration mineral identification using analytical spectral devices (ASD), as well as geochemical analysis to determine grade content of Au, Ag, and Cu elements. The results showed that the developing alteration zone consisted of argillic (kaolinite+illite+ smectite), advanced argillic (quartz+kaolinite+dickite), and silicification (quartz+chalcedony+ kaolinite). Quartz textures of the veins that developed in the study area consisted of massive quartz, crustiform, crustiform-colloform, brecciated, bladed, and saccharoidal. The texture of mineralization bearing veins with high grade gold content were crustiform-colloform, banded, followed by massive quartz oxide, and lattice bladed. These veins are associated with kaolinite + dickite clay minerals, moderate to high oxidation states, and are associated with grey sulphides containing high grade up to Au 76.65 ppm and Ag 34 ppm.
KARAKTERISTIK FLUIDA PEMBAWA MINERALISASI PIT RAMBA JORING DEPOSIT MARTABE, SUMATRA UTARA: MINERALIZATION BEARING FLUID CHARACTERISTIC OF RAMBA JORING PIT MARTABE DEPOSIT, NORTH SUMATRA Arifin, Asri; Rosana, Mega Fatimah; Yuningsih, Euis Tintin; Yoseph CSSSA, Boy
Buletin Sumber Daya Geologi Vol. 16 No. 2 (2021): 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.v16i2.314

Abstract

The research aims to determine hydrothermal evolution of the mineralisation bearing fluid contained in the Ramba Joring Pit, including temperature, pressure, density and depth of mineralisation deposition formation. This research uses the fluid inclusion analysis. Inclusion sampling was carried out on two main textures of ore namely vuggy silica texture formed at range Th 331ºC to 394ºC, Tm -15.19ºC to -12.94ºC with salinity of 14.42 wt% - 14.89 wt%. NaCl equivalent and brecciated texture formed at range Th 287.8ºC – 398.2ºC, Tm -14.89ºC to -11,76ºC and salinity 13.91 wt% – 14.87 wt%. NaCl equivalent. The positive correlation between the homogenization temperature of mineralization formation and salinity of the solution indicates that the leaching process that forms cavities in rocks occurs at the initial stage of the hydrothermal alteration process that begins with the leaching process forming cavities (silica vuggy) followed by the process of silicification with brecciated texture, the deposition of mineralization takes place at this stage. The origin of the solution forms a hydrothermal deposition is a type of basinal water-seawater solution in the form of connate water which is still influenced by surface water/meteoric water, also shows an indication of a relationship with magmatic water. The density of metal-forming fluids ranges from 0.8 gr/cm3 – 0.9 gr/cm3 while the process that takes place in the formation of ore in Ramba Joring Pit is isothermal mixing with a slight warming effect/boiling.
Kontrol Struktur Geologi Terhadap Pola Lorong Gua Karst Karangnunggal Kabupaten Tasikmalaya Provinsi Jawa Barat Selasian Gussyak; Dicky Muslim; Euis Tintin Yuningsih
Jurnal Lingkungan dan Bencana Geologi Vol 13, No 1 (2022)
Publisher : Badan Geologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34126/jlbg.v13i1.399

Abstract

Penelitian ini membahas pola pembentukan lorong rongga/gua yang memiliki sungai bawah tanah berdasarkan pengaruh struktur geologi yang berkembang pada Karst Karangnunggal Kabupaten Tasikmalaya Provinsi Jawa Barat. 2 fitur gua yang memiliki sungai bawah tanah ditemukan terdiri dari Gua Sangiran - Gua Cipariuk dan Gua Cilutung - Gua Bojong, selanjutnya dilakukan pemetaan susur gua terhadap gua-gua tersebut. Berdasarkan hasil analisis pola kelurusan morfologi menunjukkan dominan arah orientasi timurlaut-baratdaya dan baratlaut-tenggara. Berdasarkan analisis pola kekar pada area mulut gua Cipariuk terindikasi adanya sesar normal yang berarah baratlaut-tenggara dan analisis pola kekar area mulut Gua Cilutung dan Gua Bojong terindikasi adanya sesar mendatar berarah timurlaut-baratdaya. Arah-arah orientasi ini apabila disandingkan dengan arah orientasi pola lorong gua hasil pemetaan susur gua berarah sama yaitu berarah timurlaut-baratdaya dan sesekali berarah baratlaut-tenggara
QUARTZ VEIN INFILL STRUCTURE MODE IN KENCANA DEPOSIT, GOSOWONG GOLDFIELD, INDONESIA K.S. Electricia; Mega F. Rosana; Euis Tintin Yuningsih; Ildrem Syafri; S.N. Viqnoriva
Bulletin of Scientific Contribution: GEOLOGY Vol 15, No 1 (2017): Bulletin of Scientific Contribution
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (751.317 KB)

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
HIDROGEOKIMIA AIRTANAH PADA DAERAH PANTAI: STUDI KASUS DATARAN RENDAH KATAK, DESA SUMBER AGUNG, KABUPATEN BANYUWANGI Arief Nur Muchamad; Boy Yoseph CSS Syah Alam; Euis Tintin Yuningsih
JURNAL RISET GEOLOGI DAN PERTAMBANGAN Vol 27, No 1 (2017)
Publisher : Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1024.372 KB) | DOI: 10.14203/risetgeotam2017.v27.442

Abstract

This paper describes the groundwater quality assessment conducted in Katak lowland area, in Banyuwangi District, East Java. The quality of water salinity had been identified during field observation. In order to identify the origin of saline groundwater, a hydrogeochemical study has been carried out by analysing of 12 groundwater wells, 3 surface water and sea water. Hydrogeochemical analysis identified major ion elements on Piper′s diagram to know the facies and dominant ion content in ground water study area. The interpretation of plots for different major ions suggests that saline water in Katak are typically salt water intrusion and flushing salt residue in marine sediment/limestone. This hydrochemical research area provides new insights into the geochemical relationships between freshwater and seawater at different depths in coastal and alluvial sediments. Saltwater intrusion occurs due to cone of depression caused by concentrated exploitation of groundwater in the south/coastal area, and flushing mainly by groundwater flow through marine sediment/limestone in the northern area. Groundwater zonation is characterized by hydrochemical type from natrium chloride type in the southern area to calciumsulphate  type in the northern  area. Controlled by hydrodynamic of groundwater with salt water and flushing of geochemical by ground water, respectively. AbstrakMakalah ini menjelaskan hasil dari penilaian kualitas airtanah yang dilakukan di daerah dataran rendah Katak, di Kabupaten Banyuwangi, Jawa Timur. Kualitas airtanah yang asin telah teridentifikasi saat observasi lapangan. Dalam rangka mengidentifikasi asal air asin di daerah Katak, studi hidrogeokimia dilakukan terhadap sampel airtanah dari 12 airtanah sumur/bor, 3 air permukaan dan air laut. Analisis hidrokimia dilakukan dengan pengeplotan unsurunsur ion utama pada diagram Piper untuk mengetahui fasies dan kandungan ion dominan pada airtanah di daerah penelitian. Interpretasi plot untuk ion utama menunjukkan bahwa salinitas di daerah Katak diakibatkan oleh intrusi air laut dan pembilasan garam-garam pada sedimen marine/batugamping. Penelitian hidrokimia di daerah dataran rendah Katak memberikan wawasan baru mengenai hubungan antara air tawar dan air laut pada kedalaman yang berbeda di dalam sedimen pantai dan aluvial. Intrusi air asin terjadi karena kerucut depresi yang disebabkan oleh eksploitasi air tanah terkonsentrasi di bagian selatan yang merupakan daerah pesisir dan pembilasan karena aliran air tanah melalui sedimen marine/batugamping di Utara. Zonasi jenis airtanah diketahui dari karakteristik hidrokimianya, mulai dari jenis natrium klorida di Selatan sampai kalium sulfat di Utara. Hal tersebut masing-masing dikontrol oleh hidrodinamika airtanah dengan air asin dan pelarutan kimia batuan oleh airtanah.
Epithermal Gold-Silver Deposits in Western Java, Indonesia: Gold-Silver Selenide-Telluride Mineralization Euis Tintin Yuningsih; Hiroharu Matsueda; Mega Fatimah Rosana
Indonesian Journal on Geoscience Vol 1, No 2 (2014)
Publisher : Geological Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (601.476 KB) | DOI: 10.17014/ijog.1.2.71-81

Abstract

DOI: 10.17014/ijog.v1i2.180The gold-silver ores of western Java reflect a major metallogenic event during the Miocene-Pliocene and Pliocene ages. Mineralogically, the deposits can be divided into two types i.e. Se- and Te-type deposits with some different characteristic features. The objective of the present research is to summarize the mineralogical and geochemical characteristics of Se- and Te-type epithermal mineralization in western Java. Ore and alteration mineral assemblage, fluid inclusions, and radiogenic isotope studies were undertaken in some deposits in western Java combined with literature studies from previous authors. Ore mineralogy of some deposits from western Java such as Pongkor, Cibaliung, Cikidang, Cisungsang, Cirotan, Arinem, and Cineam shows slightly different characteristics as those are divided into Se- and Te-types deposits. The ore mineralogy of the westernmost of west Java region such as Pongkor, Cibaliung, Cikidang, Cisungsang, and Cirotan is characterized by the dominance of silver-arsenic-antimony sulfosalt with silver selenides and rarely tellurides over the argentite, while to the eastern part of West Java such as Arinem and Cineam deposits are dominated by silver-gold tellurides. The average formation temperatures measured from fluid inclusions of quartz associated with ore are in the range of 170 – 220°C with average salinity of less than 1 wt% NaClequiv for Se-type and 190 – 270°C with average salinity of ~2 wt% NaClequiv for Te-type.
Co-Authors Adi Hardiyono -, Adi Hardiyono Agus Didit Haryanto Ahadi Ahmat Lamburu Akhmad Fauzan Al Adawiah, Nabila. Anna Yushantarti, Anna Arief Nur Muchamad Asep Nurdin, Asep Asri Arifin Aton Patonah, Aton Bensaman, Benny. Boy Yoseph Cahya Sunan Sakti Syah Alam DEWI FITRIANI Dewi Gentana Dicky Muslim Emi Sukiyah F, Kurnia. Arfiansyah F. G, Aiwoy Fachrudin, Kurnia Arfiansyah Faizal, Reza Mochammad Gentana, Dewi Gentana, Dewi Haris Siagian Hashari Kamaruddin Hiroharu Matsueda Hiroharu Matsueda Hiroharu Matsueda Hutauruk, Gita Agnes Meilani Ildrem Syafri Indra Kusuma, Riko Ardiansyah Indrakususma, Riko Ardiansyah Ismail, Fajar K.S. Electricia Kamaruddin, Hashari Kemala Wijayanti, Kemala Kurnia Arfiansyah, Kurnia Matsueda, Hiroharu Matsueda, Hiroharu Mega F. Rosana Mega F. Rosana Mega Fatimah Rosana Mega Fatimah Rosana Mega Fatimah Rosana Mega Fatimah Rosana -, Mega Fatimah Rosana Meiriyanto, Fernandy Mohamad Nur Heriawan Nada Salsabila Deva Nana Sulaksana Nana Sulaksana Purbiyantoro, Aldila Jasmine Purwaiswanto, Bambang Antoro Raden Isnu Hajar Sulistyawan, Raden Isnu Hajar Riko Ardiansyah Indra Kusuma Rinawan, Fiandri Indra Rinawan, Fiandri Indragunawan Rompo, Ahmad Iryanto Rompo, Iryanto Rosana, M.Sc., Ph.D, Prof. Ir. Mega Fatimah Rosana, Mega F. Rosana, Mega Fatimah Ruswanto, . S.N. Viqnoriva Saala, Nur Afrianti Santoso, STJ Budi Saputra, Dwie H. Selasian Gussyak Soepriadi, Soepriadi Sulaksana, Nana Sutopo, S.T., Dipl. Geoth. En., P, Bronto Triyunita, Ade Wirdan, Muhammad Faisal Yuano Rezky, Yuano