Purwanto, Heru Sigit and Harjanto, Agus and Rizkianto, Yody and Fatchurohman, Dedi (2019) TIPE DEPOSIT DAN MINERALISASI EMAS DAERAH ARINEM DAN SEKITARNYA KABUPATEN GARUT JAWA BARAT. In: PROSIDING SNCPP 2019 “Pengembangan Ristek dan Pengabdian Menuju Hilirisasi Industri”, 16 – 17 Oktober 2019, LPPM UPN “Veteran” Yogyakarta.
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Abstract
Mineralization of gold and other ore minerals in Arinem area and its surrounding was found in the quartz vein. The research area is in Arinem area and its surrounding, Garut Regency, West Java. Arinem and the vicinity was the location for early stage of research program of mineralization in Papandayan area. This area has good mineralization, and according to previous studies, is a low sulfidation area with the presence of pyrite, chalcopyrite, galena and sphalerite (Antam, 2014). The presence of galena and sphalerite mineral has suggested that instead of low sulfidation, the area may be in intermediate sulfidation zone state supported by other data such as quartz breccia, banded quartz and shear as control structure. Lithology in the area consists of breccia Quaternary and lava unit of Jampang formation in Miocene and unit of andesite and basaltic in Quaternary and intrusion of dacite, andesite and diorite. The alteration and mineralization of research area was classified as propylitic alteration zone with the presence of chlorite, epidote and calcite mineral, argillic alteration zone with montmorillonite, kaolinite mineral, silicic alteration zone with the presence of quartz-sericite, a bit of calcite mineral. Observed ore minerals are pyrite, chalcopyrite, galena, sphalerite. The geological structure was controlled by horizontal fault in almost north-south direction of N 170 O O -180 E and northeast – southwest horizontal fault in N 40 O O – 50 E, while the mineralization zone was controlled or following fault pattern of N 170 O O - 175 E.
| Item Type: | Conference or Workshop Item (Paper) |
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| Uncontrolled Keywords: | Mineralization, alteration, sulfidation, sheared |
| Subjects: | Q Science > QE Geology |
| Divisions: | Faculty of Engineering, Science and Mathematics > School of Engineering Sciences |
| Depositing User: | Dr.ST,MT AGUS HARJANTO |
| Date Deposited: | 10 Dec 2019 01:42 |
| Last Modified: | 10 Dec 2019 01:42 |
| URI: | http://eprints.upnyk.ac.id/id/eprint/21815 |
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