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Ali Okto
Halu Oleo University
Earth & Planetary Sciences

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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

Abstract

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.
Kandungan dan Ketebalan Endapan Nikel Laterit di Kecamatan Langgikima Kabupaten Konawe Utara Provinsi Sulawesi Tenggara Hasria Hasria; Rino Erwin; Ali Okto; Bahdad Bahdad; Arisona Arisona; La Hamimu
Jurnal Geomine Vol 11, No 1 (2023): April 2023
Publisher : Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33536/jg.v11i1.1069

Abstract

This study is located in Lameruru Village, Langgikima District, North Konawe Regency, Southeast Sulawesi Province. The research area consists of morphological units of low hills and hills with an altitude of 200 to 350 meters above sea level. This study aims to determine the morphological conditions and analyze the thickness of laterite nickel deposits based on the morphological conditions in the study area. The morphological observation method was based on morphometric analysis and morphographic analysis, while the thickness analysis of laterite nickel deposits was based on exploration drill data consisting of collar data, lithological data, survey data, and assay data. The analytical method used in this study is the XRF (X-Ray fluorescence) geochemical method to determine the elemental content based on the percentage content of the laterization zone in the study area. The results of the study show that the morphology in the study area was divided into low hills and hills with slightly sloping, sloping, slightly steep, and steep slopes. The thickness of laterite nickel deposits in the study area follows the shape of the topographical slope where in areas with a higher slope level the nickel deposits formed are thinner and the lower the slope level the thicker nickel deposits are formed.
Co-Authors Adriyansyah Adriyansyah Al Firman Arisona Arisona Bahdad Bahdad Hasria Hasria La Hamimu Laode Muhammad Golok Jaya Masri Masri Muliddin Rino Erwin Suryawan Asfar