 | | Journal (article/letter/editorial) | | Alteration Associated with the Gosowong Epithermal Au-Ag Deposit, Halmahera, Indonesia: Mineralogy, Geochemistry...Abstract The Gosowong epithermal Au-Ag deposit, located on Halmahera Island, eastern Indonesia, has a resource...shoots along a 400-m section of the north-striking, east-dipping Gosowong fault. Alteration is zoned around...propylitic alteration. Prior to the onset of the Gosowong deposit hydrothermal system the host rocks in...assemblage. As hydrothermal fluids progressed up the Gosowong fault, vein-related propylitic (epidote, Fe chlorite |  | | Journal (article/letter/editorial) | | northwest, through the Philippines, Indonesia, New Guinea, and the volcanic island chains of the Solomon Islands...to commencing production (e.g., Tumpangpitu, Indonesia), increasing the known Au endowment of the southwest...epithermal deposit, part of the Gosowong Goldfield on Halmahera Island, Indonesia (Clark and Gemmell, 2018)...(Braxton et al., 2018). Exploration activities in Indonesia over the past century have led to the discovery...Grasberg-Ertsberg and Batu Hijau Cu-Au deposits and the Gosowong-Kencana, Gunung Pongkor, Kelian, Mesel, Mount |  | | Book (edition) | | BIBLIOGRAPHY OF THE GEOLOGY OF INDONESIA AND SURROUNDING ARE AS Edition 7.1 – 8 June 2020 J.T. VAN GORSEL...GORSEL Bibliography of Indonesia Geology, Ed. 7.1 1 www.vangorselslist.com 6/8/20 LIST OF CONTENTS........................................ 9 I.1. Indonesia Regional Geology................................................. 862 IV. BORNEO (KALIMANTAN & NORTH BORNEO) .............................................................................. 946 IV.3. North Borneo (Sarawak, Sabah, Brunei) ............... |  | Sykora, Stephanie, Selley, David, Cooke, David R., Harris, Anthony C. (2018) The Structure and Significance of Anhydrite-Bearing Vein Arrays, Lienetz Orebody, Lihir Gold Deposit, Papua New Guinea. Economic Geology, 113 (1) 237-270 doi:10.5382/econgeo.2018.4550 | Journal (article/letter/editorial) | | zone rich in anhydrite ± carbonate, coupled with biotite alteration, that represents the ancient porphyry-style...to shear veins with low-angle dips (~30°) to the north. Linking these large, low-angle veins are sets of...principal vein array with low-angle dips to the north. Porphyry-stage veins were modified during epithermal...ENE-striking structural grain, evident at both the island scale and the deposit scale, was inherited from...adularia alteration zone at Lihir is a broad zone of biotite ± K-feldspar–altered rocks that contain thick (0 |  | | Journal (article/letter/editorial) | | was indicated for the Kencana Au–Ag deposit, Indonesia, in which mixing was inferred to be particularly...over 2200 m, oriented in a NE–SW direction in the north and N–S direction in the south (Fig. 3). Outcrop...smectite (aT = 150°C and dT = 100°C). Because biotite (dT = 260°C) was not observed in the AE zone, the...The cell structure was extended by 500 m to the north and south around the location of the NW–SE cross-section...epithermal Au-Ag deposit, Gosowong Goldfield, Halmahera Island, Indonesia. Econ. Geol. 113 (1), 209–236 |  | Leary, Stephen, Sillitoe, Richard H., Stewart, Peter W., Roa, Karl J., Nicolson, Benjamin E. (2016) Discovery, Geology, and Origin of the Fruta del Norte Epithermal Gold-Silver Deposit, Southeastern Ecuador. Economic Geology, 111 (5) 1043-1072 doi:10.2113/econgeo.111.5.1043 | Journal (article/letter/editorial) | | abundant base metal sulfides and the other in the north dominated by manganese- and base metal-poor quartz...progressed, Fruta del Norte and environs farther north were covered by an even wider (400 m) spaced, induced...resistivity-high chargeability anomaly about 2 km north of Bonza-Las Peñas along the projection of the Las...continuity of the mineralization along strike to the north and south of hole 51 on section line 3300mN. After...and swings west across the Las Peñas fault zone north of Bonza-Las Peñas (Fig. 5), increasing the thickness |
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