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All Journal Jurnal Ilmu Tanah dan Lingkungan (Journal of Soil Science and Environment) Jurnal technoscientia Jurnal Pengabdian UntukMu NegeRI JURNAL TEKNOLOGI TECHNOSCIENTIA Jurnal Pengabdian Kepada Masyarakat (JPKM) Jurnal Teknologi Jurnal Ilmiah Fakultas Sains dan Teknik Universitas Nusa Cendana
Herry Zadrak Kotta
Program Studi Teknik Pertambangan, Fakultas Sains Dan Teknik, Universitas Nusa Cendana
Religion Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Engineering Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Social Sciences Other

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VARIATION IN CARBONATE CEMENT BY CATHODOLUMINESCENCE MICROSCOPIC ANALYSIS: IMPLICATION ON ENGINEERING PROPERTIES OF OOLITIC LIMESTONE IN FATUMNASI AREA, TIMOR TENGAH SELATAN (TTS) REGENCY, NUSA TENGGARA TIMUR PROVINCE Kotta, Herry Zadrak
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 6 No 2 Februari 2014
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (863.453 KB) | DOI: 10.34151/technoscientia.v6i2.563

Abstract

Cathodoluminescence (CL) is generated by visible light of minerals when they are bombarded with a beam of high energy electrons by a cathode gun. There are two types of chatodoluminescence, i.e., cold CL and hot CL. In the cold cathode microscopic equipment, the electrons are generated by an electric discharge between two electrodes under a low gas pressure, whereas in the hot CL microscope, the electrons are generated by heating a filament (2000-3000°C). This research to propose determine the growth of oolitic limestone’s cement by cathodoluminescence analysis and it’s implication to the engineering properties. Sectoral zoning and chevron-shape growth zoning exist in some coarse-grained calcite aggregates. The sectorial zoning of calcite as reflected by dull to bright CL color indicated as a water level fluctuation during cementation of the carbonate rocks, where the bright color of calcite indicating a shallower depth of water (oxidation) and dull to nonluminescence indicating a deeper level of the water (reduction). The results of this research, oolitic limestone (sample NS-1) showing sectorial zoning (chevron-shape) with at least 6 zonations, and have better engineering properties of other samples, according to SNI. 13-0089-87. Cathodoluminescence analysis is commonly used in the petroleum study, as evidenced in this research can be applied to determine the engineering properties of oolitic limestones in the study area.
PEMBINAAN DAN PENDAMPINGAN KEPADA PENAMBANG EMAS TANPA IJIN DI DESA NOELTOKO, KEC.MIOMAFFO BARAT, KAB.TTU Yusuf Rumbino; Fani Serangmo; Herry Zadrak Kotta; Woro Sundari; Ika Krisnasiwi; Noni Banunaek
Jurnal Pengabdian UntukMu NegeRI Vol 3 No 2 (2019): Pengabdian Untuk Mu negeRI
Publisher : LPPM UMRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (701.581 KB) | DOI: 10.37859/jpumri.v3i2.1549

Abstract

Abstract Exploitation of natural resources through unlicensed gold mining (PETI) is not in accordance with mining operational standards occurring along the Noeltoko River, West Miomaffo Subdistrict, Timor Tengah Utara Regency, East Nusa Tenggara Province resulting in damage and environmental degradation. Changes and environmental damage include the formation of dug holes around the river flow, turbidity of water, changes in river flow. Other problems that arise are conflicts between these PETI workers and with other communities. This community service activity aims to provide an understanding to the community about the importance of maintaining and caring for rivers from excavation in the river walls that can cause debris / landslides explaining the impact of the use of hazardous materials such as mercury / mercury and cyanide, socialization of regulations regarding the formation of People's Mining Areas (WPR) ), introducing "sluice box" equipment to help the process of separating gold sand from sand. This activity was supported by the UPT ESDM Atambua Branch and was followed by 40 people who used to mine on the Noeltoko river. It is expected that the guidance and assistance can raise public awareness to be able to mine but still preserve the environment Keyword: PETI, Noeltoko, WPR, sluicebox, Abstrak Eksploitasi sumber daya alam melalui Penambangan Emas Tanpa Izin (PETI) tidak sesuai dengan standar operasional penambangan terjadi di sepanjang sungai Noeltoko-Kecamatan Miomaffo Barat, Kabupaten Timor Tengah Utara Propinsi Nusa Tenggara Timur yang mengakibatkan kerusakan dan penurunan kualitas lingkungan. Perubahan dan kerusakan lingkungan tersebut diantaranya terbentuk lubang-lubang galian di sekitar aliran sungai, kekeruhan air, berubahnya aliran sungai.. Permasalahan lain yang timbul adalah konflik antar pekerja PETI ini maupun dengan masyarakat lain. Kegiatan pengabdian kepada masyarakat ini bertujuan untuk memberikan pemahaman kepada masyarakat mengenai pentingnya menjaga dan merawat sungai dari penggalian di dinding sungai yang dapat mengakibatkan runtuhan/longsoran menjelaskan dampak penggunaan bahan berbahaya seperti air raksa/merkuri dan sianida, sosialisasi peraturan tentang pembentukan Wilayah Pertambangan Rakyat (WPR), mengenalkan peralatan “sluice box” untuk membantu proses pemisahan buiran emas dari pasir.Kegiatan ini didukung oleh pihak UPT ESDM Cabang Atambua dan dikuti oleh 40 orang masyarakat yang biasa menambang di sungai Noeltoko. Diharapkan dengan adanya pembinaan dan pendampingan dapat menimbulkan kesadaran masyarakat untuk dapat menambang namun tetap menjaga kelestarian lingkungan Kata kunci: PETI, Noeltoko, WPR, sluicebox
VARIATION IN CARBONATE CEMENT BY CATHODOLUMINESCENCE MICROSCOPIC ANALYSIS: IMPLICATION ON ENGINEERING PROPERTIES OF OOLITIC LIMESTONE IN FATUMNASI AREA, TIMOR TENGAH SELATAN (TTS) REGENCY, NUSA TENGGARA TIMUR PROVINCE Kotta, Herry Zadrak
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 6 No 2 Februari 2014
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34151/technoscientia.v6i2.563

Abstract

Cathodoluminescence (CL) is generated by visible light of minerals when they are bombarded with a beam of high energy electrons by a cathode gun. There are two types of chatodoluminescence, i.e., cold CL and hot CL. In the cold cathode microscopic equipment, the electrons are generated by an electric discharge between two electrodes under a low gas pressure, whereas in the hot CL microscope, the electrons are generated by heating a filament (2000-3000°C). This research to propose determine the growth of oolitic limestone’s cement by cathodoluminescence analysis and it’s implication to the engineering properties. Sectoral zoning and chevron-shape growth zoning exist in some coarse-grained calcite aggregates. The sectorial zoning of calcite as reflected by dull to bright CL color indicated as a water level fluctuation during cementation of the carbonate rocks, where the bright color of calcite indicating a shallower depth of water (oxidation) and dull to nonluminescence indicating a deeper level of the water (reduction). The results of this research, oolitic limestone (sample NS-1) showing sectorial zoning (chevron-shape) with at least 6 zonations, and have better engineering properties of other samples, according to SNI. 13-0089-87. Cathodoluminescence analysis is commonly used in the petroleum study, as evidenced in this research can be applied to determine the engineering properties of oolitic limestones in the study area.
PENERAPAN IPTEK KEPADA KELOMPOK PEMILAH MANGAN DI KABUPATEN KUPANG Yusuf Rumbino; Herry Zadrak Kotta; Fani K. Y. Serangmo; Rizhard Ndolu; Noni Banunaek; Woro Sundari; Aisyah Ahmad; Adept Talan Titu Eki; Ika Fitri Krisnasiwi; Andreas Sinuhaji
Jurnal Pengabdian Kepada Masyarakat Vol 2 No 2 (2022): Desember 2022
Publisher : Universitas Nusa Cendana

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

Abstract

Masyarakat di Desa Ekateta Kecamatan Fatuleu Kabupaten Kupang. Ada yang memiliki pekerjaan sebagai pemilah batuan yang mengandung logam mmangan (Mn). Para pekerja merupakan penduduk desa yang dilibatkan oleh suatu perusahaan yang memiliki Ijin Usaha Tambang (IUP) untuk memisahkan mangan dari batuan pengikutnya dengan cara “hand sorting”. Para pekerja ini tidak dilengkapi peralatan K3 maupun fasilitas dalam memilah mangan. Jumlah pekerja tidak menentu tergantung banyaknya tumpukan mangan yang digali oleh alat berat perusahaan. Permasalahan utama dari para pekerja adalah mereka tidak dapat memilah batuan mangan yang berukuran kurang dari 2 cm karena selain lebih mudah mengumpulkan batuan mangan yang berukuran lebih besar dari 5 cm. Metode kegiatan berupa penyampaian materi mengenai teknis penambangan mangan, K3 dalam usaha pertambangan, perhitungan ekonomis yang didapatkan jika bisa mengambil mangan yang berukuran kurang dari 2 cm menggunakan alat bantu mekanis berupa trommel screen dan log washer. Dampak dari kegiatan pengabdian ini adalah menimbulkan motivasi para pemilah untuk bermitra dengan kampus dalam menghasilkan prototipe alat yang bisa digunakan sebagai pemilah mekanis untuk mendapatkan batuanpembawa mangan yang berukuran kurang dari 2 cm.
DIAGENESIS DAN IDENTIFIKASI UMUR BATUGAMPING MERAH FORMASI MAUBISSE, DAERAH OINLASI TUNAN, DESA OINLASI, KECAMATAN KIE, KABUPATEN TIMOR TENGAH SELATAN, PROVINSI NUSA TENGGARA TIMUR Herry Zadrak Kotta; Andreas Sinuhaji
Jurnal Teknologi Vol 16 No 2 (2022): Nopember 2022
Publisher : Universitas Nusa Cendana

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Abstract

Daerah penelitian merupakan perbukitan terisolasi yang tersusun atas batugamping merah. Secara administrasi, daerah penelitian terletak di Oinlasi Tunan, Desa Oinlasi, Kecamatan Kie, Kabupaten Timor Tengah Selatan, Provinsi Nusa Tenggara Timur. Keberadaan batugamping ini merupakan suatu fenomena yang khas dan menarik untuk dijadikan sebagai bahan penelitian. Perkembangan batugamping yang sangat sensitif terhadap perubahan keadaan geologi akan memberikan informasi yang sangat baik mengenai sejarah pembentukan batugamping, dimana penelitian ini membahas mengenai proses diagenesis yang terjadi pada batugamping Formasi Maubisse tersebut di atas. Litologi yang ditemukan berupa jenis Floatstone dan Foraminifera Rudstone. Metode yang digunakan berupa pengamatan lapangan, pengambilan sampel serta analisa laboratorium berupa analisis petrografi dan di poles untuk analisis petrologi secara megaskopis. Hasil penelitian dari dua sampel yang mewakili daerah penelitian diketahui proses diagenesis berupa: pemampatan, pengisian rongga/penyemenan, penggantian, rekristalisasi, pendolomitan, peretakan/pengkekaran, dan pelarutan. Rekaman proses pemampatan hampir terlihat pada seluruh sampel batuan, dicirikan dengan hubungan antar butiran (terutama fragmen foram: fosil fusulinida) yang terarah, cangkangnya pecah, beberapa terpola, saling menyentuh/bersinggungan. Berdasarkan kandungan fosil pada batugamping Formasi Maubisse yaitu Fusulina, merupakan fosil indeks batuan Karbon Akhir, oleh karena itu batugamping Formasi Maubisse di daerah penelitian berumur Karbon Akhir (286 – 230 juta tahun).
STUDI PENDAHULUAN UNSUR TANAH JARANG PADA LEMPUNG BERSISIK MÈLANGE BOBONARO DI DESA OBEN, KECAMATAN NEKAMESE, KABUPATEN KUPANG, PROVINSI NUSA TENGGARA TIMUR Kotta, Herry Zadrak; Mella, Welhelmus; Suwari; Banunnaek, Noni
Jurnal Ilmu Tanah dan Lingkungan Vol 26 No 2 (2024): Jurnal Ilmu Tanah dan Lingkungan
Publisher : Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jitl.26.2.72-76

Abstract

The location of the investigation area is in Oben Village, Nekamese District, Kupang Regency, East Nusa Tenggara Province with coordinates 123° 40'40” E - 123° 41'20” E and 10° 16'0” S - 10° 16'40” S. The geology of the study area is generally occupied by mixed rocks dominated by a gray clay, blackish brown, reddish brown, with foreign chunks consisting of peridotite, sedimentary rock consisting of brown and reddish reddish limestone, silt, micaceous sandstones, metamorphic rock: chlorite schist, with quartzite veins. Of the five samples analyzed, namely four samples of soil matrix and one sample of Peridotite, the following results were obtained: six rare earth elements were contained in 4 samples of the soil matrix, namely Yttrium (Y): 3.63 – 68.75 ppm, Praseudymium (Pr): 7.38 – 38.38 ppm, Scandium (Sc): 4.83 – 4.93 ppm, Lanthanum (La): 21.48 – 91.03 ppm, Cerium (Ce): 32.48 – 184.85 ppm, and Neodymium (Nd): 9.4 – 57 ppm specifically for sample 1 also contains 3 rare earth elements, namely: Gadolinium (Gd): 3.48 ppm concentration the average is lower than its abundance in nature, Samarium Sm: 13.1 ppm, and Dysprosium: (Dy): 6.88 ppm. For rock samples only contain Praseudymium (Pr): 7.78 ppm and Cerium (Ce): 87.88 ppm.
Co-Authors Aisyah Ahmad Andreas Sinuhaji Banunaek, Noni Banunnaek, Noni Fani K. Y. Serangmo Fani Serangmo Ika Fitri Krisnasiwi Ika Krisnasiwi Mella, Welhelmus Rizhard Ndolu Suwari Titu-Eki, Adept Yusuf Rumbino