Karakteristik vein dan batuan pembawa mineralisasi pada epitermal sulfidasi rendah daerah vavolapo blok poboya pada PT. Citra Palu Minerals, Kelurahan Poboya Kecamatan Mantikulore, Provinsi Sulawesi Tengah

SAMUDRA, GALANG (2024) Karakteristik vein dan batuan pembawa mineralisasi pada epitermal sulfidasi rendah daerah vavolapo blok poboya pada PT. Citra Palu Minerals, Kelurahan Poboya Kecamatan Mantikulore, Provinsi Sulawesi Tengah. Other thesis, Institut Teknologi Nasional Yogyakarta.

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Abstract

Indonesia, which is in the world's volcanic ring zone, means that there are many volcanic trails, so the formation of gold in magmatic areas is very interesting to study. One of the regions in Indonesia that has gold deposits is the Poboya area, Mantikulore District, Palu. The Poboya area has been used as a mining area with an area of 49 thousand hectares. The Poboya area has unique geological conditions where valuable minerals such as Au-Ag develop in limestone metamorphic rocks. The method used in this research is surface geological data collection, especially through geological, alteration and mineralization mapping which is integrated with laboratory analysis (petrography, mineralography and X-Ray Diffraction). There are 3 alteration zones in the research area, namely, the silicic zone (vein system), a propylitic zone characterized by the presence of chlorite minerals, and a clay zone (clay) which is characterized by the presence of the minerals illite, smectite, and kaolinite. The mineralization found in the research area is a group of sulfide minerals consisting of one type of mineral, namely pyrite. These sulfide minerals make up the vein body (Vein body) has the fill character (infilling) with a mineralization pattern that is present in the form of a quartz vein system. The vein textures found in the research area have 5 textures, namely Crystalin carbonate, Bladed, masive quartz, chalcedonic and lattice bladed. research area goes deep uppermost level or chalcedonic superzone = Indonesia yang berada dalam zona cincin gunung api dunia membuat banyak dijumpai jalur gunung api, sehingga pembentukan emas di wilayah magmatic sangat menarik untuk di teliti. Salah satu wilayah Indonesia yang memiliki deposit endapan emas adalah wilayah Poboya, Kecamatan Mantikulore, Palu. Wilayah Poboya telah dijadikan area pertambangan dengan luas wilayah mencapai 49 ribu hektar. Daerah Poboya memiliki kondisi geologi yang unik dimana mineral berharga seperti Au-Ag berkembang di batuan metamorf yang berumur kapur. Metode yang digunakan pada penelitian ini adalah pengambilan data geologi permukaan khususnya melalui pemetaan geologi, alterasi dan mineralisasi yang diintegrasikan dengan analisis laboratorium (petrografi, mineragrafi, dan X-Ray Diffraction). Terdapat 3 zona alterasi yang ada pada daerah penelitian yaitu, zona silisik (vein sistem), zona propilitik yang ditandai dengan kehadiran mineral klorit, dan zona lempung (clay) yang ditandai dengan kehadiran mineral illit, smektit, dan kaolinit. Mineralisasi yang dijumpai pada daerah penelitian merupakan kelompok mineral sulfida yang terdiri dari satu jenis mineral yaitu pirit. Mineral sulfida tersebut menyusun tubuh urat (Vein body) memilik karakter pengisian (infilling) dengan pola mineralisasi yang hadir berupa sistem urat kuarsa. Tekstur urat yang dijumpai pada daerah penelitian memiliki 5 tekstur, yaitu Crystalin carbonate, Bladed, masive quartz, chalcedonic dan lattice bladed. daerah penelitian masuk dalam uppermost level atau chalcedonic superzone.

Item Type: Thesis (Other)
Uncontrolled Keywords: Poboya, Epithermal deposits, alteration, mineralization, vein texture = Poboya, Endapan epitermal, Alterasi, Mineralisasi, Tekstur urat
Subjects: Q Science > QE Geology
Divisions: Fakultas Teknik & Perencanaan > Teknik Geologi
Depositing User: hardita - wijaya
Date Deposited: 17 Sep 2024 03:46
Last Modified: 17 Sep 2024 03:46
URI: https://repository.itny.ac.id/id/eprint/5183

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