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IbM Bilik Sterilisasi Dengan Cairan Disinfektan Berbahan Alami Daun Sirih Di Kecamatan Matan Hilir Selatan Kabupaten Ketapang Aqla, Syarifah; Firman, Firman; Sartika, Sartika; Herman, Herman; Indra Septiansyah, Sy; Herkan Afandi, Idris; Santi, Maya; Azmi, Noprizan; Mastura, Syarifah
Literasi Jurnal Pengabdian Masyarakat dan Inovasi Vol 2 No 1 (2022)
Publisher : Pengelola Jurnal Politeknik Negeri Ketapang Jl. Rangga Sentap, Dalong Sukaharja, Ketapang 78813. Telp. (0534) 3030686 Kalimantan Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58466/literasi.v2i1.1408

Abstract

Mining Engineering as one of the D3 Study Programs at Politeknik Negeri Ketapang seeks to assist the government in preventing the spread of Covid-19 in Ketapang Regency. Through PKM activities in 2020, Mining Engineering provides an alternative to preventing the Covid-19 virus by making a natural disinfectant made from betel leaf and applied in sterilization booths. The sterilization booth with natural disinfectant liquid of betel leaf was given to one of the mosques in Ketapang Regency, Al-Muhdi Mosque, Pelang District, Ketapang Regency on Friday, July 10, 2020. It is hoped that this sterilization booth will make the surrounding community, especially the Al-Muhdi mosque congregation feel calm and comfortable during worship
Hydrothermal Alteration and Geochemical Signatures of High-Sulfidation Epithermal Gold Mineralization in Petai Patah, West Kalimantan, Indonesia Hede, Arie Naftali Hawu; Azmi, Noprizan; Syafrizal
Journal of Geoscience, Engineering, Environment, and Technology Vol. 11 No. 02 (2026): Article In Press-JGEET Vol 11 No 02 : June (2026)
Publisher : UIR PRESS

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Abstract

High-sulfidation epithermal systems are an important source of precious metals in volcanic-arc settings, yet detailed studies of these systems in the Schwaner Mountains of western Borneo remain scarce. This study investigates the hydrothermal alteration and geochemical signatures of high-sulfidation epithermal gold mineralization in the Petai Patah area, Ketapang District, West Kalimantan, Indonesia, hosted within the Cretaceous Sukadana Granite and the Paleogene Kerabai Volcanic Complex. An integrated analytical approach was employed, combining reflectance spectroscopy, petrographic analysis, X-ray diffraction (XRD), and whole-rock geochemistry on 15 representative rock samples from surface outcrops and drill cores. Results reveal a well-defined hydrothermal alteration zonation, comprising an advanced argillic core (alunite, pyrophyllite, dickite) in Pit Lokma, surrounded by a phyllic zone (dominant muscovite/sericite–illite–pyrite assemblage) extending into Pit Limun. Gold mineralization (maximum 1.61 ppm Au in sample DC 347, Pit Limun) is spatially correlated with these alteration zones and occurs in association with sulfide minerals, suggesting a structurally controlled fluid pathway. Elevated As concentrations in gold-bearing samples from Pit Limun, together with the diagnostic mineralogical assemblage, support the interpretation of a high-sulfidation epithermal system. This study provides new insights into the spatial relationship between alteration zonation and gold enrichment within a high-sulfidation epithermal system, offering implications for mineral exploration in similar magmatic arc settings across Southeast Asia.