Sutarto, Sutarto Hydrothermal Cu-Au Mineralisation in the Volcano Ancient Crater at Selogiri Area, Central Java, Indonesia : As a Potential Geological Education Sites. Prosiding Geoheritage Conference Malaysia, Tahun 2015.
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4. Potensi dan pemanfaatan bahan galian toseki di daerah Lomuli Kec (edit word salah bg bwh).pdf Download (661kB) | Preview |
Abstract
Daerah telitian secara administratif termasuk ke 'dalam Desa Lomuli, Kecamatan Lemito, Kabupaten pahuwato, Propimi Grontalo. Di daerah telitian batuan toseki hadir berselingan dengan granodiorit, dasit, andesit, serta tuf. Batas antara toseki dengan batuan yang lain sebagian besar berupa kontak struktur dengan arah pada umumnya timurlaut-baratdaya dan baratlaut-tenggara. Secarafisik bahan galian toseki di daerah telitian sangat keras, berwarna putih hingga putih abu-abu-kecoklatan, dihasilkan dari silifikasi batuan tuf karena proses hidrotermal. Berdasarkan hasil analisa petrografi mineralogi yang dominan muncul adalah mineral kuarsa, serisit dan mineralpenyerta berupa mineral lempung dan mineral opak. Secara kimiawi, mempunyai kandungan Si02 yang cukup tinggi, dan Fe203 bervarisi. Total cadangan bahan galian toseki adalah sebesar 1.747.774,71 m3 atau 4.982.550,00 ton. Dari percobaan yang telah dilakukan, bahan galian toseki yang terdapat di Kabupaten Pahuwato dapat digunakan sebagai bahan baku atau filler pembuatan keramik. Abstract The research area is located at Lomuli village, Lemito District, Pahuwato Regency, Province of Grontalo. In the research area, toseki usually present in intercalation with granodiorite, dacite, andesite, and tuff. Contact boundaries between toseki with the other rocks, generally are NE-SW and NW-SE trending structure contacts. Physically, the toseki deposit showing white to brownish grey colour, very hard, fractured, as manifestation of tuff silification. Under microscopic analisys, most primarly minerals have altered to major quartz, sericite, and minor of clay minerals and opaque minerals. Atomic Absorbtion Spectophotometry analisys, showing high content of Si02 on the most samples, and variation of the Fe203 content. The reserve of the deposit is abaout 1,747,774.71 m3 or 4,982,550.00 ton. Based on the research, the toseki deposit at Lomuli village, can be used as raw material or filler of ceramic industrial.
| Item Type: | Article |
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| Subjects: | Q Science > QE Geology |
| Divisions: | Faculty of Engineering, Science and Mathematics > School of Engineering Sciences |
| Depositing User: | Ir., MT SITI UMIYATUN CHOIRIAH |
| Date Deposited: | 15 Mar 2022 08:14 |
| Last Modified: | 15 Mar 2022 08:19 |
| URI: | http://eprints.upnyk.ac.id/id/eprint/28668 |
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