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Pengaruh Batuan Dasar dan Geomorfologi Terhadap Laterisasi dan Penyebaran Kadar Ni dan Fe Pada Endapan Nikel laterit PT. Tambang Bumi Sulawesi, Desa Pongkalaero, Kabupaten Bombana, Sulawesi Tenggara Hasria, Hasria; Anshari, Erwin; Rezky, Tri Binajaya
JAGAT (Jurnal Geografi Aplikasi dan Teknologi) Vol 3, No 1 (2019): JAGAT (Jurnal Geografi Aplikasi dan Teknologi)
Publisher : JAGAT (Jurnal Geografi Aplikasi dan Teknologi)

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Abstract

Penelitian ini terletak di wilayah PT. Tambang Bumi Sulawesi, Desa Pongkalaero Kecamatan Kabaena Selatan Kabupaten Bombana Provinsi Sulawesi Tenggara. Tujuan dari Penelitian ini yaitu untuk mengindentifikasi hubungan batuan dasar terhadap sebaran kadar nikel, hubungan morfologi terhadap laterisasi dan kondisi sebaran kadar Ni dan Fe pada profil endapan nikel laterit. Metode yang dilakukan pada penelitian ini yaitu dengan melakukan survey lapangan secara langsung mencakup pengambilan data litologi dan geomorfologi serta data hasil pengeboran PT. Tambang Bumi Sulawesi berupa kadar Ni, Fe dan kedalaman pengeboran pada daerah penelitian. Hasil penelitian menunjukkan bahwa batuan dasar pada daerah penelitian terdiri atas batuan peridotit yakni lherzolit dan batuan piroksinit yaitu olivin websterit dan olivin klinopiroksinit dengan sebaran kadar Ni paling banyak terdapat pada daerah yang memiliki batuan dasar jenis peridotit. Analisis kelerengan daerah penelitian terbagi atas lereng datar, lereng landai, lereng miring dan lereng curam, dimana pada daerah yang datar dan landai memiliki ketebalan laterit yang tebal sedangkan pada daerah yang curam ketebalan lateritnya tipis. Kadar Ni terdapat paling banyak pada zona saprolit sedangkan kadar Fe paling banyak terdapat pada zona limonit hal ini dikarenakan unsur Ni yang bersifat mobile dan unsur Fe yang bersifat immobile. Kata Kunci : Batuan Dasar, Geomorfologi, Nikel Laterit, Unsur Ni, Unsur FeDOI : 10.5281/zenodo.3355821
Karakteristik Fluida Hidrotermal Endapan Emas Orogenik di Pegunungan Rumbia, Kabupaten Bombana, Provinsi Sulawesi Tenggara Hasria, Hasria; Idrus, Arifudin; Warmada, I Wayan
Jurnal Geologi dan Sumberdaya Mineral Vol 20, No 2 (2019): Jurnal Geologi dan Sumberdaya Mineral
Publisher : Pusat Survei Geologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (239.487 KB) | DOI: 10.33332/jgsm.geologi.20.2.111-117

Abstract

Recently, gold exploration activities  are not only focused along volcanic-magmatic belt but also starting to shift along metamorphicand sedimentary terrains. The purpose of this study is to analyses the characteristics hydrothermal fluids gold deposits t in the Rumbia Mountains, Bombana Regency, Southeast Sulawesi. There are three generations of veins identified including the first is parallel to the foliations, the second crosscuts the first generation of veins/foliations, and the third is of laminated deformed quartz+calcite veins at the late stage. Temperature of homogenization (Th) and salinity at Rumbia Mountain of the first vein vary from 220 to 355.30oC and 6.74 to 10.11 wt. % NaCl eq., respectively. The second generation vein was originated at Th of 157 to 255.50oC and salinity of 3.39 to 6.88 wt.%NaCl eq., whereas the third generation vein formed at lowest Th varying from 104.40 to 265.90oC and less saline fluid at salinity range between 0.18 and 6.30 wt.% NaCl eq. The result of temperature formation value correlation to the depth of the formation of orogenic gold deposits in Rumbia Mountain is indicated to form on sub-greenschist to greenschist facies at depth of about 4-8 kilometers and formation temperature between 104.40 - 355.30oC at zone epizonal and mesozonal. Based on characteristics fluids inclusion discussed above, the primary metamorphic-hosted gold mineralization type at Rumbia Mountain tends to meet the criteria of orogenic gold type.  Keyword : fluid iclusion, quartz veins, Rumbia mountain, orogenic gold deposits.
Separation Of Copper And Chromium Metal In Ultrabasic Rocks From Top Of Manoapa Region, Subdistrict Of Lasusua Southeast Sulawesi By Ligand of 2 - (Aminometil) Pyridine Harimu, La; Hasria, Hasria; Intan, Putri
Indo. J. Chem. Res. Vol 1 No 1 (2013): Edisi Pertama (First Edition)
Publisher : Jurusan Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Pattimura

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Abstract

Study on separation of ions chromium metal and copper in ultrabasic material located in the village to of Monapa subdistrict Lasusua Regency Kolaka Utara Province Sulawesi Tenggara was conducted. The aim of this study was to determine the ability of the ligand 2-(aminometil) pyridine to separate chromium metals and copper to pure metals and its application to separate the chromium metals (Cr) and copper (Cu) in ultrabasic material from the village of Puncak Monapa subdistrict Lasusua Regency Kolaka  Utara Province Sulawesi Tenggara by means of extraction method. The concentration of ions chromium metal (Cr) and copper (Cu) of the pure metals are extracted respectively 10 ppm, and the concentration of the ligand 2-(aminometil) pyridine is 10 ppm. For concentration ion chromium metal (Cr) and copper (Cu) in ultrabasic material with 20x and 30x dilution is 8.3875 and 1.3590 and 3.50 ppm and 2,001 ppm for the ions copper metal (Cu). Results of this research shomush that the ability of ligand 2-(aminometil) pyridine for extracting chromium metals (Cr) and copper (Cu) for a single pure metal has a percent extraction (%E) are respectively 79.375 % and 82.37 %. Separation ability of ions chromium metal (Cr) and ions copper (Cu) mixed are 77.625% and 79.96%. For its application in separating ions chromium metal (Cr) and copper (Cu) in ultrabasic material to 20 time dilution extraction are 74.51% and 71.35%, and 30 time dilution are 69.28% and 69.71%. Based on the results of the study ligand 2-(aminometil) pyridine is relatively better for ions copper metal (Cu) for extraction ions of pure metal and relatively similar to ultrabasic material.
LIMBAH KULIT PISANG KEPOK (Musa acuminate) SEBAGAI BIOFILTER ZAT BESI (Fe) DAN ZAT KAPUR (CaCO3) Budiman, Budiman; Hamidah, Hamidah; Hasria, Hasria
PROMOTIF: Jurnal Kesehatan Masyarakat Vol 8, No 2 (2018): PROMOTIF - DESEMBER
Publisher : Fakultas Kesehatan Masyarakat Universitas Muhammadiyah Palu

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (932.248 KB) | DOI: 10.31934/promotif.v8i2.497

Abstract

Air tanah atau air sumur merupakan sumber air bersih terbesar yang digunakan. Kendala yang paling sering ditemui dalam menggunakan air tanah adalah masalah kandungan zat besi (Fe) dan zat Kapur (CaCO3) yang terdapat dalam air baku. Air yang tercemar logam Fe dan zat kapur yang tinggi, bila akan dikonsumsi maka perlu dilakukan pengolahan terlebih dahulu. Pengolahan air untuk menurunkan kadar Fe dan zat kapur dalam air dapat dilakukan secara kimia dan fisika. Proses adsorpsi zat besi (Fe) dan zat kapur (CaCO3) dalam air secara alami dapat dilakukan menggunakan tempurung kelapa, arang sekam padi, biji kelor, maupun kulit pisang. Oleh karena itu, penelitian ini bertujuan untuk mengetahui apakah limbah kulit pisang Kepok (Musa acuminate) dapat digunakan sebagai biofilter zat besi dan zat kapur pada air. Penelitian ini menggunakan metode eksperimen yang akan melihat efektifitas perlakuan limbah kulit pisang kepok sebagai biofilter zat besi dan zat kapur pada air bersih. Penelitian ini akan dilakukan di Laboratorium Kesehatan Daerah Provinsi Sulawesi Tengah mulai dari bulan Januari sampai Juli tahun 2018. Hasil penelitian menunjukkan bahwa Limbah kulit pisang Kepok (Musa acuminate) efek-tif sebagai biofilter zat besi (Fe) dan tidak efektif sebagai biofilter zat kapur (CaCO3).
The Metamorphic Rocks-Hosted Gold Mineralization At Rumbia Mountains Prospect Area In The Southeastern Arm of Sulawesi Island, Indonesia Hasria, Hasria; Idrus, Arifudin; Warmada, I Wayan
Journal of Geoscience, Engineering, Environment, and Technology Vol 2 No 3 (2017): JGEET Vol 02 No 03 : September (2017)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24273/jgeet.2017.2.3.434

Abstract

Recently, in Indonesia gold exploration activities  are not only focused along volcanic-magmatic belts, but also starting to shift along metamorphic and sedimentary terrains. The study area is located in Rumbia mountains, Bombana Regency, Southeast Sulawesi Province. This paper is aimed to describe characteristics of alteration and ore mineralization associated  with metamorphic rock-related gold deposits.  The study area is found the placer and  primary gold hosted by metamorphic rocks. The gold is evidently derived from gold-bearing quartz veins hosted by Pompangeo Metamorphic Complex (PMC). These quartz veins are currently recognized in metamorphic rocks at Rumbia Mountains. The quartz veins are mostly sheared/deformed, brecciated, irregular vein, segmented and  relatively massive and crystalline texture with thickness from 1 cm to 15.7 cm. The wallrock are generally weakly altered. Hydrothermal alteration types include sericitization, argillic, inner propylitic, propylitic, carbonization and carbonatization. There some precious metal identified consist of native gold and ore mineralization including pyrite (FeS2), chalcopyrite (CuFeS2), hematite (Fe2O3), cinnabar (HgS), stibnite (Sb2S3) and goethite (FeHO2). The veins contain erratic gold in various grades from below detection limit <0.0002 ppm to 18.4 ppm. Based on those characteristics, it obviously indicates that the primary gold deposit present in the study area is of orogenic gold deposit type. The orogenic gold deposit is one of the new targets for exploration in Indonesia
Preliminary Study Gold Mineralization Hosted By Metamorphic Rocks In The Southeastern Arm Of Sulawesi, Indonesia Hasria, Hasria; Idrus, Arifudin; Warmada, I Wayan
UNEJ e-Proceeding 2016: Proceeding The 1st International Basic Science Conference
Publisher : UPT Penerbitan Universitas Jember

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Abstract

This paper is intended to describe an preliminary study of geological setting and gold mineralization hosted by metamorphic rocks in the southeastern arm of Sulawesi. The stratigraphy consists of three constituent rocks are continental terrain composed of metamorphic rocks, ophiolite complex are dominated by mafic and ultramafic rocks and Sulawesi Molasse composed of clastic sediments and carbonate. The origin of gold mineralization at Mendoke and Rumbia mountains only preliminary studies. A field study indicates that the Langkowala placer/paleoplacer gold is possibly related to gold-bearing quartz veins hosted by metamorphic rocks particularly mica schist, phyllite and metasediments in the area. These quartz veins are currently recognized in metamorphic rocks at Wumbubangka Mountains, a northern flank of Rumbia Mountain Range. At least, there are three generations of the quartz veins. The first generation of quartz vein is parallel to foliation of mica schist, phyllites and metasediments in up to 10 m wide zones. The second quartz vein generation crosscut the first quartz vein and the foliation of the wallrock. The third is of laminated deformed quartz-calcite veins at the late stage. The first veins are mostly massive to crystalline, occasionally brecciated and sigmoidal, whereas the second veins are narrower than the first and relatively brecciated. Gold grades in the second and third veins are relatively higher than that in first veins. The similar quartz veins types are also probably present in Mendoke mountain range, in the northern side of Langkowala area. The wallrock are generally weakly altered. Alteration types include argillic, silification, carbonate and carbonization alteration. This primary gold deposit is called as orogenic gold type and product of hydrothermal activity. The orogenic gold deposit is one of the new target of gold exploration are being developed in Indonesia.