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All Journal BAREKENG: Jurnal Ilmu Matematika dan Terapan Jurnal Fisika Indonesia Science Nature
Andayany, Helda
Department Of Physics, Faculty Of Mathematics And Natural Sciences, Pattimura University, 97233, Ambon, Indonesia
Astronomy Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Mathematics Mechanical Engineering Physics Transportation

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INTERPRETATION OF ALTERATION MINERALS AROUND THE OMA-HARUKU HOT SPRINGS, CENTRAL OF MOLUCCAS Helda Andayany; Josephus Ronny Kelibulin
SCIENCE NATURE Vol 2 No 2 (2019): SCIENCE NATURE
Publisher : Faculty of Mathematics and Natural Sciences, University of Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/SNvol2iss2pp090-096year2019

Abstract

Petrographic analysis to rock samples located at Oma-Haruku hot springs was dominated by mudstone. Another alteration mineral types of the rocks in this area are quartz, aragonite/calcite and feldspar minerals. Petrographic analysis was supported by the XRD method. The method indicated that the alteration minerals content was generally dominated by the presence of aragonite/calcite with particle size of 0.05 - 2 mm, the abundance of 55% and the spread evenly. Based on such presence of aragonite/calcite, one can interpret that the origin rock was carbonate. Alteration minerals which were generally dominated by mudstone indicate that the type of hot spring area in Oma-Haruku is a type of high-temperature reservoir, namely > 175 oC. Therefore, the area is potentially as geothermal field in Central of Moluccas.
Characteristics Of Minerals With Spectroskopic IR At The Gold Mining Area Of Botak Mountain Helda Andayany; Josephus Ronny Kelibulin
Jurnal Fisika Indonesia Vol 22, No 2 (2018)
Publisher : Department of Physics Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfi.v22i2.41529

Abstract

There are three rock samples that have been taken from the gold mining area of Botak mountain. The rock samples were then analyzed with spectroscopic IR to estimate the characteristic of mineral in the area. Analysis results indicate that the type of mineral found in rock samples 2 is dominated by Kaolinite, Organic Carbon, Palygorskite and Quartz. So it can be estimate the type of rock contained in that area is Quartzite. The analysis result of mineral type analysis on rock samples 1 dan 3 have similarities that is Kaolinite, Organic Carbon, Palygorskite, and Albite. So it can be estimate that the other types of rock in the area are Andesite and Limestone. The existence of Andesit and Limestone shows that there has been alteration and hydrothermal mineralization from volcanic origin rock. So it can be estimate that these rocks are the bearing rocks and hosted rocks of base metals and gold. Whereas the quartzite is a bond mineral from gold carrying rocks
POTENSI ENERGI PANAS BUMI DAN REKOMENDASI PEMANFAATANNYA PADA DAERAH HARUKU MALUKU TENGAH Andayany, Helda; Risakotta, Mirtha Yunitha Sari
BAREKENG: Jurnal Ilmu Matematika dan Terapan Vol 13 No 2 (2019): BAREKENG: Jurnal Ilmu Matematika dan Terapan
Publisher : PATTIMURA UNIVERSITY

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (158.482 KB) | DOI: 10.30598/barekengvol13iss2pp069-074ar768

Abstract

Penelitian ini adalah menganalisis karakteristik mineral ubahan dengan metode FTIR di daerah mata air panas Haruku, Maluku Tengah. Hasil analisis FTIR menunjukkan jenis mineral ubahan yang mendominasi daerah panas bumi Haruku adalah mineral aragonit dan kalsit yang terdapat pada jenis batuan karbonat. Kedua mineral ini merupakan hasil alterasi dari batuan induk karena suhu reservoir dan suhu di permukaan yang tinggi. Mineral aragonit dan kalsit diinterpretasi terbentuk secara bersama-sama pada suhu permukaan 55oC. Di bawah suhu 55oC hanya kalsit yang dapat terbentuk. Mineral aragonit mengalami rekristalisasi dengan porositas yang tinggi. Sebaliknya, mineral kalsit mengalami rekristalisasi dengan porositas yang rendah. Hasil pengukuran suhu air panas rata-rata di permukaan adalah 58,8oC. Karakteristik air panas pada daerah Haruku Maluku Tengah juga didukung dengan pH adalah 7,1 dan konduktivitas listrik berkisar (9,350-10,450) μS/m. Pengukuran debit alir berkisar (0,11-0,16) m3/detik memberikan hasil perhitungan kehilangan panas (heat loss) adalah 80 kW. Pendugaan suhu reservoir panas bumi pada daerah Haruku Maluku Tengah berkisar 240oC, sehingga dapat berpotensi sebagai lapangan panas bumi untuk digunakan sebagai dasar rekomendasi utilisasi potensi panas bumi bagi pemerintah daerah (indirect use) yaitu sebagai informasi untuk memenuhi kekurangan daya listrik di daerah Maluku Tengah dan Maluku secara umum.
Co-Authors Josephus Ronny Kelibulin Josephus Ronny Kelibulin Risakotta, Mirtha Yunitha Sari