Analisis Pengaruh Morfologi Pada Pembentukan Nikel Laterit Pt Prima Sentosa Alam Lestari Kabupaten Morowali Provinsi Sulawesi Tengah

Thamsi, Alam Budiman; Jafar, Nurliah; Fauzie, Ahmad

doi:10.20527/jg.v7i2.9114

Cited by 8 publications

(8 citation statements)

References 3 publications

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“…Tanah pada nikel laterit dapat dipengaruhi oleh morfologinya. Semakin landai morfologi tanah maka akan mempengaruhi keetebalan tanah [14] [15]. Di daerah Kabupaten Luwu Timer terdapat lahan bekas tambang yang pelu diteliti agar dampak dari paca penambangan tersebut dapat diidentifikasi lebih awal.…”

Section: Pendahuluanunclassified

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Analisis Kualitas Tanah pada Lahan Bekas Tambang Nikel di Desa Ussu Kecamatan Malili Kabupaten Luwu Timur Provinsi Sulawesi Selatan

Jafar

Thamsi²,

Aprilia³

et al. 2022

J. Geosapta

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Salah satu daerah yang terjadi perubahan kualitas tanah akibat aktivitas pertambangan adalah Kabupaten Luwu Timur tepatnya di Desa Ussu Kecamatan Malili. Lahan yang dulunya hutan sekarang menjadi lahan terdegradasi, sehingga perlu dilakukan penelitian terkait kualitas tanah lahan bekas tambang. Tujuan dari penelitian ini adalah untuk mengetahui pH tanah dan kandungan mineral pada lahan bekas tambang nikel dan mengetahui kualitas tanah menggunakan parameter pH tanah dan kandungan mineral pada lahan bekas tambang nikel. Terdapat 6 titik pengambilan sampel dengan metode pengambilan sampel yaitu grab sampling. Sampel yan gtelah diambil kemudian dilakukan analisis pH dan analisis X-Ray Diffraction. Hasil analisis didapatkan pH tanah dengan nilai 6,2 sampai dengan 6,8 (agak asam) sehingga dapat dikatakan bahwa pH tanah tersebut kurang baik untuk tanaman. Hasil pengujian XRD didapatkan kandungan mineral geotit, hematit, kuarsa, gahnit, lizardit dan diopsid. Tanah pada daerah penelitian memiliki pH 6,2 sampai dengan 6,8 (agak asam), dan memiliki kandungan Fe >325 ppm. Nilai pH tanah dan kandungan Fe pada lokasi penelitian menunjukkan angka yang tidak sesuai dengan standar kualitas tanah yang ada sehingga dapat disimpulkan bahwa kualitas tanah pada lokasi penelitian tidak baik. Kualitas tanah yang tidak baik menyebabkan tanaman tidak subur dan sangat sulit untuk tumbuh.

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Section: Pendahuluanunclassified

“…Dilakukan beberapa tahapan pada penelitian ini. Tahapan yang pertama yaitu tahap pendahuluan berupa kegiatan administrasi dan studi pustaka [14]. Tahapan selanjutnya yaitu tahap pengambilan sampel.…”

Section: Metodologiunclassified

Analisis Kualitas Tanah pada Lahan Bekas Tambang Nikel di Desa Ussu Kecamatan Malili Kabupaten Luwu Timur Provinsi Sulawesi Selatan

Jafar

Thamsi²,

Aprilia³

et al. 2022

J. Geosapta

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“…The existence of Ore in the Mining Authority area is essential to know with certainty its potential. It will later aim to support national steel projects that are used to meet national and international steel needs Thamsi, Jafar, et al, 2021). Mineralization in Sebuku Island is formed by the lateralization process, which is closely related to weathering, oxidation, and leaching processes under normal pressure and temperature conditions.…”

Section: Introductionmentioning

confidence: 99%

Structure Control of Iron Ore Education on Sebuku Island

Husain

Normansyah

Bakri

2022

Journal of Geology and Exploration

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Sebuku is occupied by serpentinized ultramafic (peridotite) rocks, gabbro, and chert which are ophiolite series formed in the oceanic crust, in the middle occupied by tuff and claystones. The purpose of this study was to determine the distribution pattern of iron ore deposits. The research area illustrates that the distribution of Fe elements with high levels of >48% is concentrated in the northeast-southwest part, while Fe elements with levels of <48% are concentrated in the southwest-northwest part of the west. Based on the topographic classification of the research area. The pattern of mineralization follows the structural pattern that occurs, where the lateralization of the source rock is intensive in the crushing zone around the structure that forms the main structure and minor structure. This destruction zone serves as an effective water infiltration medium to accelerate the washing process which forms supergene enrichment zones. The pattern of distribution of mineralization is relatively Northeast-Southwest which in some places is characterized by the straightness of the ridge or morphology with more contrasting and prominent zones on the lidar mosaic map.

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“…The product targeted by the company is an ore which has a Ni content of 1.8%. Cut off grade or limit grade where the grade below has metal or mineral content in rock that does not meet economic requirements (Heriyawan et al, 2005(Anshariah, 2016Syah et al, 2018;Thamsi et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Classification of Ni Levels for Determination Cut-Off Grade in Region X

Jafar

Wahid

Widodo

2022

Journal of Geology and Exploration

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The need for ore with levels above 1.8% presents the author's initiative to conduct research to produce ore products with the required levels. The aim is to find out the lowest grade of ore that can be mined and used as a cut-off grade in area x. The research method used is the blending method. Some of the data needed include the drill point coordinates, the borehole's depth, the borehole, the slope of the borehole, lithology, and the value of Ni content. The distribution of nickel in the x region is dominated by ore which has a grade of 1 to 2% with a total volume of 140,100 Bcm, and there is a small amount of nickel that has a rate above 2% with an importance of 15,650 Bcm. The mining sequence has been divided into three to three stages, where the tonnage obtained from each location is 8,9937 tons, 442361 tons, and 100,554 tons. The simulation of blending steps was carried out starting from the classification of nickel with the highest grade, namely nickel with the lowest rate of 1.8% with an average rise of 2.07%, to the last stage, which produces a middle grade of 1.9%, namely in the classification of nickel with rates above 1.6 %. From the results of the blending simulation that has been carried out, it can be concluded that the lowest grade that can be used as a cut-off grade in area x is ore with a Ni content of 1.6%.

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Analisis Pengaruh Morfologi Pada Pembentukan Nikel Laterit Pt Prima Sentosa Alam Lestari Kabupaten Morowali Provinsi Sulawesi Tengah

Cited by 8 publications

References 3 publications

Analisis Kualitas Tanah pada Lahan Bekas Tambang Nikel di Desa Ussu Kecamatan Malili Kabupaten Luwu Timur Provinsi Sulawesi Selatan

Analisis Kualitas Tanah pada Lahan Bekas Tambang Nikel di Desa Ussu Kecamatan Malili Kabupaten Luwu Timur Provinsi Sulawesi Selatan

Structure Control of Iron Ore Education on Sebuku Island

Classification of Ni Levels for Determination Cut-Off Grade in Region X

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