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All Journal Jurnal Aplikasi Fisika Journal of Geoscience, Engineering, Environment, and Technology Jurnal Geomine PROMINE Journal of Physics and Its Applications Jurnal Geosains dan Teknologi Jurnal GEOSAPTA JAGAT (Jurnal Geografi Aplikasi dan Teknologi) JATI EMAS (Jurnal Aplikasi Teknik dan Pengabdian Masyarakat) Ophiolite : Jurnal Geologi Terapan Jurnal Rekayasa Geofisika Indonesia Jurnal Rekayasa Geofisika Indonesia International Journal of Acta Material

Suryawan Asfar

Department Of Geological Engineering, Faculty Of Mathematics And Natural Sciences, Halu Oleo University, Bumi Tridharma Green Campus, Anduonohu, Kendari City, Southeast Sulawesi 93232, Indonesia.

Author-ID : 2390025

Agriculture, Biological Sciences & Forestry Humanities Astronomy Chemistry Computer Science & IT Earth & Planetary Sciences Education Energy Engineering Environmental Science Materials Science & Nanotechnology Mechanical Engineering Physics Public Health Other

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Analysis of the Sub-Surface Distribution of Graphite Minerals Using the Geoelectrical Resistivity Method in the Sabilambo Village, Kolaka Regency, Southeast Sulawesi Province La Hamimu; L O Ngkoimani; Jahidin Jahidin; Suryawan Asfar; Usmardin Usmardin
Journal of Geoscience, Engineering, Environment, and Technology Vol. 4 No. 3 (2019): JGEET Vol 04 No 03 : September (2019)
Publisher : UIR PRESS

Southeast Sulawesi Province is one of the regions in Indonesia that has abundant mineral resources, the availability of several types of minerals is strongly influenced by the diversity of rock formations that make up the area. The metamorphic complex is one of the rock formations in the Southeast Sulawesi Province. Where the rock complex is divided into 2 (two), namely: Pompangeo Complex and Mekongga Complex, the distribution area of this metamorphic rock is estimated around 50% of the total land area of Southeast Sulawesi Province. This rock complex is very possible to contain mineral deposits, one of which is graphite mineral deposits. However, the problem that is now is the identification of the potential for subsurface distribution of graphite excavated material has not been carried out. Therefore, this research was conducted to determine the potential for subsurface distribution of graphite mineral deposits is using geoelectrical resistivity method where is using Wenner-Schlumberger configuration, this research activity was conducted in the Sabilambo Village in Kolaka Regency, where most of the research area is metamorphic complex. Based on the result of the resistivity analysis, subsurface distribution of graphite mineral deposits in the study area can be found on the surface to a depth of 33.5 meters below ground level, with layer thickness between 1.25 to 27.77 meters and has a resistivity value of 14.9 Ωm – 86.1 Ωm.

Analysis of Ultramafic Rocks Weathering Level Using the Magnetic Susceptibility in Konawe Regency, Southeast Sulawesi, Indonesia Jahidin; LO. Ngkoimani; LM. Iradat Salihin; Hasria; Erzam S. Hasan; Irfan Ido; Suryawan Asfar
Journal of Geoscience, Engineering, Environment, and Technology Vol. 5 No. 2 (2020): JGEET Vol 05 No 02 : June (2020)
Publisher : UIR PRESS

The Konawe region is part of the Sulawesi Southeast Arm ophiolite belt where ultramafic rocks are exposed in the form of dunite and peridotite. The formation of nickel deposits is closely related to the weathering process of ultramafic rocks as a source rock. Ultramafic rocks exposed to the surface will experience weathering which is influenced by many factors, including in the form of climate change, topography, and existing geological structures. The weathering process in the source rock can influence variations in chemical elements and magnetic properties in laterite soil profiles. For example, the chemical weathering might affect magnetic mineralogy and the physical weathering could affect granulometry as well as the quantity of magnetic minerals in the soil. Condition of weathering of ultramafic rocks (initial, moderate and advanced) can affect nickel content in laterite sediments. The weathering profile study of serpentine mineral is an indication of the lateralization process that occurs in ultramafic rocks and is carried out through petrographic analysis of thin cuts and polish cuts. Determination of weathering level like this is based on the level of weathering of the mineral serpentine. In this study, the determination of the weathering level of ultramafic rocks (initial, moderate, and continued) uses magnetic susceptibility parameter. A total of 232 ultramafic rock core samples obtained from 34 hand samples were taken from different places and weathered levels were analyzed. The results of the research have shown that the magnetic susceptibility of ultramafic rocks in the study area varies, from 580 x 10-6 SI to 4.724 x 10-6 SI. Based on the value of magnetic susceptibility, magnetic minerals contained in ultramafic rock samples are hematite and geotite minerals. This means that the weathering level of ultramafic rock samples is the continued weathering level. The level of continued weathering that occurs in ultramafic rocks in the study area produces nickel laterite deposits with a nickel content of 1.65 - 2.40% in the saprolite zone, 0.42% in the saprock zone, and 0.20 - 0.51% in the basic rock zone (bedrock).

Characteristics of Chromite Deposits at North Kabaena District, Bombana Regency, Southeast Sulawesi Province, Indonesia Hasria; Masri; Suryawan Asfar; Arisona; Ali Okto; La Ode Restele; La Ode Ngkoimani; Rika Yustika
Journal of Geoscience, Engineering, Environment, and Technology Vol. 6 No. 2 (2021): JGEET Vol 06 No 02 : June (2021)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2021.6.2.6424

The study area is located in North Kabaena District, Bombana Regency, Southeast Sulawesi. This paper is aimed to describe characacristics of chromite deposits. This study is conducted in three stages, three stages including desk study, field work and laboratory analysis. Desk study mainly covers literature reviews. Field work includes mapping of surface geology and sampling of representative rocks types. Laboratory analysis includes the petrologic observation of handspecimen samples, petrographic analysis of the thin section and ore microscopy for polished section. The results of petrographic analysis show that olivine minerals are generally replaced by minerals orthopyroxene and has been alterated by lizardite type serpentine veins with a fractured structure. The mineral olivine is also replaced by the mineral chrysotile as a secondary mineral with a fibrous structure. Based on ore microscopy analysis show that chromite has generally experienced a lateritification process and has been replaced by magnetite, hematite and geotite minerals. Chromite has experience process of weathering and alteration from its source rock caused by tectonics that occurred in the study area. The results shows that the characteristics of chromite deposits in North Kabaena District Chromite deposits has generally encountered in peridotite rock which have a grain size of 0.3-20 cm. Furthermore, chromite deposits in the study area are also encountered in podiform deposits, distributed locally and shows podiform to tubular shape with the dimensions of 30-60cm.

Pengolahan Air Hujan Menggunakan Batu Gamping di Kecamatan Kabawo Kabupaten Muna Supriati Supriati; La Aba; Suryawan Asfar
Jurnal Aplikasi Fisika Vol 14, No 1 (2018): JAF, Februari 2018
Publisher : Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar

Penelitian ini bertujuan untuk menentukan karakteristik air hujan, menentukan kandungan batu gamping di Kecamatan Kabawo Kabupaten Muna Sulawesi Tenggara, dan menentukan pengaruh batu gamping dalam meningkatkan kesadahan air hujan. Lokasi penelitian bertempat di Kecamatan Kabawo Kabupaten Muna. Dalam menentukan Preparasi dan analisis sampel dilakukan di Laboratorium unit Forensic Fakultas MIPA Universitas Halu Oleo. Dari hasil penelitian dijumpai bahwa kandungan air hujan di Lokasi penelitian mengandung sejumlah kecil dari karbon dioksida dan bersifat asam sedangkan kandungan batu gamping dilokasi penelitian memiliki unsur Ca 70,15 %. Dalam penelitian ini, digunakan data difraksi XRF dari material uji kemudian dianalisis dan dilakukan pengujian. Sehingga metode yang digunakan adalah metode koagulasi dimana koagulasi merupakan proses penggumpalan partikel koloid dikarenakan penambahan bahan kimia sehingga partikel – partikel tersebut bersifat netral dan membentuk endapan dengan gaya gravitasi. Hasil analisis menunjukan bahwa dari hasil uji peningkatan pengolahan air hujan yaitu memiliki nilai pH 5,74 dan setelah aplikasi menunjukan bahwa nilai pH hanya berkisar di pH 7. Sedangkan pengukuran kesadahan pada air hujan diperoleh hasil pengukuran awal 0,1000. dan hasil analisis menunjukan data secara terurut. Hal ini ditunjukan pula dengan tingginya angka konsentrasi unsur Ca dalam batu gamping.

Fasies Batuan Metamorf Daerah Wumbubangka, Kecamatan Rarowatu Utara, Kabupaten Bombana, Provinsi Sulawesi Tenggara hasria hasria; Suryawan Asfar; Adriyansyah Adriyansyah; Masri Masri; Muliddin Muliddin; Arisona Arisona; Al Firman; Ali Okto; Laode M Golok Jaya
Jurnal Geomine Vol 9, No 1 (2021): Edisi April 2021
Publisher : Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33536/jg.v9i1.896

Daerah penelitian terletak di daerah Wumbubangka, Kecamatan Rarowatu Utara, Kabupaten Bombana, Provinsi Sulawesi Tenggara.Penelitian ini bertujuan untuk mengindentifikasi jenis batuan metamorf dan fasies metamorfisme yang terdapat di daerah penelitian. Metode penelitian yang digunakan terdiri dari studi pustaka, pengambilan sampel di lapangan, analisis labroratorium serta interpretasi data. Hasil penelitian menunjukkan bahwa litologi daerah penelitian umumnya terdiri dari sekis mukovit dan marmer. Sekis muskovit memiliki tekstur berupa lepidoblastik, struktur schistose, sedangkan marmer memiliki tekstur sisa dan struktur non foliasi. Adapun komposisi mineralnya terdiri dari kalsit, klorit, kuarsa, muskovit, biotit, glukofan dan mineral opak. Adapunfasies metamorfime batuan metamorf di daerah penelitianadalah fasies sekis hijau yang dicirikan dengan kehadiran mineral muskovit, klorit, biotit, kalsit dan kuarsa.Fasies sekis hijau ini diinterpretasikan terbentuk pada temperatur 300°C-500°C.

Karakteristik Mineral Grafit Daerah Samaturu, Kabupaten Kolaka, Provinsi Sulawesi Tenggara Khalifa Akbar; Hasria Hasria; Suryawan Asfar
Jurnal Geosains dan Teknologi Vol 4, No 2 (2021): Juli 2021
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jgt.4.2.2021.72-82

Mineral grafit merupakan salah satu bentukan dari unsur karbon. Mineral grafit memiliki banyak kegunaan dalam bidang teknologi, salah satunya pada baterai lithium ion yang sedang dikembangkan di Indonesia. Penggunaan mineral grafit semakin meningkat pada industri teknologi di dunia termasuk di Indonesia, namun mineral grafit di Indonesia masih harus diimpor dari luar negeri. Selain itu, mineral grafit memiliki kisaran harga jual 1.550-2.800 USD/ton untuk tipe vein, 700-10.000 USD/ton untuk tipe flake, dan 430-550 USD/ton untuk tipe amorf. Berdasarkan hal inilah eksplorasi mineral grafit di Indonesia perlu dilakukan. Penelitian ini bertujuan untuk mengetahui batuan yang mengandung mineral grafit beserta karakteristik dan sebaran mineral grafit di daerah penelitian Penelitian ini dilakukan di daerah Samaturu, karena mineral grafit dapat ditemukan pada Kompleks Malihan Paleozoikum. Metode penelitian yang digunakan yaitu pengamatan megaskopis, petrografi dan analisis SEM-EDS. Batuan yang dijumpai mengandung mineral grafit yaitu satuan litologi sekis muskovit yang memiliki persen karbon yang beragam. Mineral grafit yang dijumpai di daerah penelitian memiliki karaktersitik yaitu merupakan grafit natural yang kristalin, bentuk pipih dan saling mengikat, terbentuk oleh metamorfisme regional, tidak teratur pada hinge lipatan sehingga diketahui bahwa mineral grafit di daerah penelitian termasuk dalam tipe endapan flake graphite (grafit serpih).

PENGARUH GEOMORFOLOGI TERHADAP POLA DISTRIBUSI UNSUR NIKEL DAN BESI PADA ENDAPAN NIKEL LATERIT DI KABUPATEN BUTON TENGAH-SULAWESI TENGGARA Hasria Hasria; Suryawan Asfar; La Ode Ngkoimani; Ali Okto; Rio Irhan Mais Cendra Jaya; Risal Sepdiansar
Geosapta Vol 7, No 2 (2021): Juli 2021
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jg.v7i2.10716

Penelitian ini terletak di Pulau Kabaena yakni di Desa Wulu Kecamatan Talaga Raya Kabupaten Buton Tengah Provinsi Sulawesi Tenggara. Tujuan dari penelitian ini untuk mengindentifikasi pengaruh geomorfologi terhadap pola distribusi kandungan unsur nikel dan besi pada endapan nikel laterit. Metode penelitian terdiri dari studi pustaka; pengamatan geomorfologi dan pengambilan sampel yang representatif; analisis laboratorium menggunakan X–Ray Flourenscense (XRF); serta analisis data. Hasil penelitian menunjukkan bahwa rata-rata pola distribusi kandungan unsur nikel dan besi mengalami peningkatan pada geomorfologi perbukitan tinggi dengan kemiringan agak curam di zona limonit dan saprolit. Hal ini diinterpretasikan karena terdapatnya rekahan-rekahan pada geomorfologi tersebut sehingga memudahkan masuknya air sehingga proses pelapukan/laterisasi yang terjadi akan meningkat. Adapun kandungan unsur nikel mengalami pengkayaan (enrichment) di zona saprolit sedangkan unsur Fe mengalami pengkayaan di zona limonit. Hal ini disebabkan karena unsur Ni merupakan unsur yang mempunyai mobilitas yang tinggi (mobile) sehingga selama proses pelapukan/laterisasi, akan tertransportasi ke arah bawah permukaan dan terkonsentrasi pada bagian bawah yakni zona saprolit, sedangkan unsur Fe merupakan unsur yang immobile yang tidak mudah bergerak ke arah bawah sehingga terkonsentrasi pada bagian atas yakni zona limonit.

Profil Endapan Nikel Laterit di Kecamatan Tinanggea, Kabupaten Konawe Selatan, Provinsi Sulawesi Tenggara Hasria Hasria; Suryawan Asfar; Ervan Rizqullah Tawakkal
PROMINE Vol 9 No 1 (2021): PROMINE
Publisher : Jurusan Teknik Pertambangan, Fakultas Teknik, Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/promine.v9i1.2345

The research area is located in Tinanggea District, South Konawe Regency, Southeast Sulawesi Province. This study aims to determine the profile of laterite nickel deposits in the study area. The research method used consists of literature study, field sampling and laboratory analysis and data interpretation. The results showed that the profiles of laterite nickel deposits in the study area consisted of top soil, limonite zone, saprolite zone and bedrock with different thicknesses. Top soil at Station 1 is very thin in the form of clay and plant remains, while at Station 2 it is a layer of sediment (limestone) with a thickness of 0-5 meters. Based on geochemical data, it shows that Ni, SiO and MgO elements /oxides show enrichment in the saprolite zone because have mobile so its dissolve easily during the laterization process and are transported the subsurface and experience leaching so that its are concentrated in the saprolite zone. The Fe element shows enrichment in the limonite zone because the Fe element has immobile so that it is not easily transported downward and is concentrated in the upper zone, namely the limonite zone.

Morphotectonic Control of Land Movements at Wundulako Region, Kolaka Regency, Southeast Sulawesi Province, Indonesia Martono; Hasria; Suryawan Asfar; Muhammad Arba Azzaman; La Ode Ngkoimani; Ali Okto; La Hamimu; Irawati; Sawaludin; La Ode Muhammad Iradat Salihin; Wahab
Journal of Geoscience, Engineering, Environment, and Technology Vol. 7 No. 2 (2022): JGEET Vol 07 No 02 : June (2022)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2022.7.2.9235

This research is located at Wundulako District, Kolaka Regency, Southeast Sulawesi Province. The purpose of this study are to determine the level of tectonic activity and the effect of tectonic activity on the land movement of the study area. Based on the DEM (Digital Elevation Model) analysis, geomorphology of the study area is dominated by mountains unit that indicate the influence of tectonic activity. Geomorphological aspects were analyzed to determine the tectonic classes in the study area such as watershed and non-watershed analysis. The results showed that, tectonic class of the study area is classified as very high and moderate tectonic class. The effect of tectonic class level on land movement in the study area shows a least correlation. This interprets that the cause of land movement at study area is not only influenced by tectonic factors but is also influenced by other factors such as rainfall, lithological conditions, geomorphology, earthquakes, and human activities. This shows that morphotectonic control has little effect on the land movements at Wundulako District, Kolaka Regency, Southeast Sulawesi Province, but is also influenced by other factors such as rainfall, lithological conditions, geomorphology, earthquakes, and human activities.

Rancangan Sistem Pembuatan Kapur Tohor di Desa Lakarinta Kabupaten Muna Provinsi Sulawesi Tenggara LO Ngkoimani; Jahidin Jahidin; Suryawan Asfar
JATI EMAS (Jurnal Aplikasi Teknik dan Pengabdian Masyarakat) Vol 5 No 2 (2021): Jati Emas (Jurnal Aplikasi Teknik dan Pengabdian Masyarakat)
Publisher : Dewan Pimpinan Daerah (DPD) Perkumpulan Dosen Indonesia Semesta (DIS) Jawa Timur

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36339/je.v5i2.400

The partner in this Community Partnership Program (PKM) was Lakarinta Village community group, especially the youth group who have businesses in making calcium oxide. Problem faced by partner was that so far the making of calcium oxide from burning limestone is done in an open space (influenced by outside air) using wood fuel taken in the surrounding environment. In this way, community group produced calcium oxide takes a long time because the process of burning limestone does not take place optimally due to heating which is heavily influenced by outside air. To overcome the problem of partner, the PKM Community Service Team designed a system of making calcium oxide with the aim of activities, namely : (1) The existence of an effective calcium oxide making system from the burning of limestone which could be used by the community group of youth groups to increase and accelerate the activities of calcium oxide production, (2) Increasing public knowledge about how to make calcium oxide through an effective limestone combustion system so that it can increase and accelerate the production. The method of implementing the activities were: socialization and field survey, the design of the calcium oxide-making system, trials, and discussions / questions and answers with partners. The results achieved were (1) partners have an effective calcium oxide making system (furnace using heating element / heat storage), (2) partners have knowledge in making calcium oxide through an effective limestone combustion system so as to increase and accelerate production activity

Co-Authors - Ernayanti Adi Pangestu Adriyansyah Adriyansyah Ahmad Londir Akhiruddin Akhiruddin Al Firman Al Rubaiyn Al Rubaiyn Ali Okto Ali Okto Arisona Arisona Ashri Al Mujaadilah Sadikin Asmawati Asmawati Asniar Asniar Dimas Bayu Zainuddin Erick S Ervan Rizqullah Tawakkal Erzam S. Hasan Golok Jaya, La Ode Muhammad Ham Karim Hasria Hasria Hasria Hasria Hasria Hasria Hasria Hasria Hasria Hasria Hasrul Hasrul Ido, Irfan Indrawati Indrawati Irawati Irawati Irfan Ade Hidayat Rantu Isran Naim Jahiddin Jahiddin Jahidin Jahidin Jahidin Jamhir Safani Jaya, Rio Irhan Mais Cendra Khalifa Akbar L M Iradat Salihin L O Ngkoimani L. O. Ngkoimani La Aba La Hamimu La Hamimu La Hamimu La Ode Andimbara La Ode Ngkoimani La Ode Ngkoimani La Ode Ngkoimani La Ode Ngkoimani La Ode Rusman La Ode Sahiddin Laode Ihksan Juarzan Laode Muhammad Farhan Laode Ngkoimani Laode Ngkoimani LO Ngkoimani LO. Ngkoimani Makkawaru, Andi Martono Masri Masri Mili, Marwan Zam Mirnayanti Karim Muhammad Arba Azzaman Muliddin Muliddin Peky Anggriawan Putri Bintang Restele, La Ode Reza Pasca Purniawan Misu Rika Yustika Risal Sepdiansar Sawaludin Sugiono Supriati Supriati Usmardin Usmardin Wahab

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