 | Cooke, D. R., Deyell, C. L., Waters, P. J., Gonzales, R. I., Zaw, K. (2011) Evidence for Magmatic-Hydrothermal Fluids and Ore-Forming Processes in Epithermal and Porphyry Deposits of the Baguio District, Philippines. Economic Geology, 106 (8) 1399-1424 doi:10.2113/econgeo.106.8.1399 | Journal (article/letter/editorial) | | and Porphyry Deposits of the Baguio District, Philippines DAVID R. COOKE,1,† CARI L. DEYELL,1,* PATRICK...7001, Australia 2 Anglo American Exploration Philippines Inc., 1101 Pearlbank Centre Building, 146 Valero...Salcedo Village, Makati City, Metro Manila, Philippines Abstract The Baguio district contains a diverse...plate and the Scarborough Ridge beneath northern Luzon over the past 3 m.y. Rapid uplift and exhumation...deposits of the Baguio district (including Antamok and Acupan, the two largest Au deposits) are intermediate |  | Cooke, David R., McPhail, Derry C., Bloom, Mark S. (1996) Epithermal gold mineralization, Acupan, Baguio District, Philippines; geology, mineralization, alteration, and the thermochemical environment of ore deposition. Economic Geology, 91 (2) 243-272 doi:10.2113/gsecongeo.91.2.243 | Journal (article/letter/editorial) | | 243-272 Epithermal GoldMineralization, Acupan, BaguioDistrict,Philippines: Geology, Mineralization, Alteration...epithermal veinsystem formedat 0.65 Ma at Acupan,Baguio district, Philippines, duringa periodof highK magmatism...theepithermal veins: typeA (characterizedby fine-grained chalcedony), typeB (fine-grained grayquartz),typeC (coarse-grained...and Hedenquist, 1990).Over200 metrictons(t) of at Acupan and Antamok (Sawkins et al., 1979), moderugeogoldhavebeenproduced...fluidcompositions epithermaland porphyrysystems at Acupanand Acupan South(CookeandBloom,1990),thegeology andgeochemis* |  | | Journal (article/letter/editorial) | | Vol. 64, 1969, pp. 644-666 Ore Depositsof the Philippines An Introduction Their Geology to 1 LEONID...BRYNER Abstract The geologic history of the Philippines pertinent to ore deposition covers the period...alpine-typeZambalesultramafic complexof western Luzon. The unusually high aluminacontentof the Masin...diversity of ore types than elsewherein the Philippines. At last eight porphyry copper depositsare known...either or- ganization. ORE DEPOSITS OF THE PHILIPPINES Contents PAGE Introduction ............... |  | | Journal (article/letter/editorial) | | Epithermal Au-Ag-Te Mineralization, Acupan, Baguio District, Philippines: Numerical Simulations of Mineral...inclusion and mineralogical studies of the Acupan gold mine, a large gold-silver-tellurium-bearing low-sulfidation...low-sulfidation epithermal deposit in the Philippines. Our numerical modeling results show that a single...deposition of most of the precious and base metals at Acupan. Continuous boiling, boiling with intermittent...similar to those observed in shallow levels of the mine and in deep-level, late-stage barren vein fill. |  | | Report (issue) | | Suern ooast of Zamboanga Peninsula. banuns of this region were studied by Mr. Christie during two periods... This book is a history of the Moros in the Philippines from the earliest times to the American occupation...Dredging in the Philippines, by William Kane Mine Exploitation and the Causes of Some Mine Failures in the...the Philippines, A by F. 38 45 T. Eddingfield Preliminary Check List of Philippine Minerals, by...for power. 3. A section of the 3-rail tramway from mine to mill. 5 8 14 16 MINERAL RESOURCES OF THE |  | Turner, William, Richards, Jeremy, Nesbitt, Bruce, Muehlenbachs, Karlis, Biczok, John (2001) Proterozoic low-sulfidation epithermal Au-Ag mineralization in the Mallery Lake area, Nunavut, Canada. Mineralium Deposita, 36 (5) 442-457 doi:10.1007/s001260100181 | Journal (article/letter/editorial) | | regional geological map of the central Churchill Province. The location of the Mallery Lake epithermal system...to the 2,111-Ma-old Hurwitz Group of the Hearne Province and therefore, by inference, it may have the same...silici®ed core consists mainly of banded auriferous chalcedony veins, with minor amounts of illite and adularia...banded chalcedony, commonly overlain by bands of microcrystalline quartz (Fig. 4d). The chalcedony displays...silver, and electrum (Au:Ag ratio 1:1) occur with chalcedony in samples 703527, 703533, Chal 1215, and Chal |  | | Journal (article/letter/editorial) | | different naming tradition, IS deposits in the Cordillera have been termed “Cordilleran polymetallic\base...“carbonate-base metal Au deposits” in the circum-Pacific region (e.g., Leach and Corbett, 1994; Corbett and Leach...± tetrahedrite / tennantite as ore minerals, chalcedony – quartz ± carbonate ± fluorite as primary gangue...sporadic IS deposits were also reported in Altiplano province (Noble et al., 1990) as well as central and Northern...Grancea et al., 2002), Baguio district of the Philippines and Morobe goldfield of Papua New Guinea (Sillitoe |  | | Journal (article/letter/editorial) | | Solberg 1995). Calaverite is known from the Star mine in Montgomery County, North Carolina, where it occurs...polished sections of ores from the Royal Vindicator mine, Haralson County, and the Consolidated and Singleton...of twinned calaverite crystals from the Cresson mine, Cripple Creek, Teller County, Colorado. Dave Bunk...Conundrum mine, and thin-bladed crystals were found in the Captain stopes in the Portland mine. Elsewhere...mines. It was described on chalcedony from workings of the Last Dollar mine. Calaverite partially altered |  | Asadi, H. H., Voncken, J. H. L., Kühnel, R. A., Hale, M. (2000) Petrography, mineralogy and geochemistry of the Zarshuran Carlin-like gold deposit, northwest Iran. Mineralium Deposita, 35 (7) 656-671 doi:10.1007/s001260050269 | Journal (article/letter/editorial) | | years, an area of about 1 km2 around the arsenic mine has been the target of gold exploration. Geological...to the north of mine valley 50 m to the north of mine valley 200 m to the north of mine oce 250 m northwest...northwest of mine oce Southeast of mine valley, close to the Tunnel 9 Karbelai-Abbas valley 25 m to the...the northwest of mine oce 150 m to the northwest of mine oce Southeast of mine valley, near the borehole...1 Southeast of mine valley, above the Tunnel 8 Tunnel 8 250 m to the northwest of mine oce Trench in |  | | Journal (article/letter/editorial) | | westernCanada (Seraphim and Hollister, 1976) or the Philippines ..... (SillitoeandGappe,1984). More arecertainlypresent...closelyrelatedto oneor moreporphyrystocks. Most Nifio, Philippines,Sillitoeand Gappe,1984) sug- breccias arerootedin...porphyries at Biga (Atlas)and SantoTomasII in the Philippines (SillitoeandGappe, 1984). Brecciasoccupya wide...deposit(Hunt et al., 1983) and at SantoTomasII, Philippines,smallpipelike brecciashavemarkedlyhigherMo to...exhibita varietyof sed- of chalcedony andjasperrecementedby chalcedony imentary structures. and minor |  | Pass, H. E., Cooke, D. R., Davidson, G., Maas, R., Dipple, G., Rees, C., Ferreira, L., Taylor, C., Deyell, C. L. (2014) Isotope Geochemistry of the Northeast Zone, Mount Polley Alkalic Cu-Au-Ag Porphyry Deposit, British Columbia: A Case for Carbonate Assimilation. Economic Geology, 109 (4) 859-890 doi:10.2113/econgeo.109.4.859 | Journal (article/letter/editorial) | | 2007). Alkalic deposits are also known from the Philippines (Dinkidi; Wolfe, 2001), Greece (Skouries; Kroll...island-arc terrane of Quesnellia in the Canadian Cordillera (Fig. 1). Quesnellia formed on continental margin...Mihalynuk, 2005). Stratigraphic units within the region have a symmetric distribution, forming a shallowly...structural analysis. Dominant structures in the mine area include the steep, easterly dipping, N-striking...Mount Polley Complex (Fig. 2B). Since Mount Polley mine opened in 1997 until 2013, it has produced more |  | Sabeva, Ralica, Mladenova, Vassilka, Mogessie, Aberra (2017) Ore petrology, hydrothermal alteration, fluid inclusions, and sulfur stable isotopes of the Milin Kamak intermediate sulfidation epithermal Au-Ag deposit in Western Srednogorie, Bulgaria. Ore Geology Reviews, 88. 400-415 doi:10.1016/j.oregeorev.2017.05.013 | Journal (article/letter/editorial) | | the AlpineBalkan-Carpathian-Dinaride geodynamic province (Ciobanu et al., 2002; Heinrich and Neubauer,...be traced from the Apuseni Mountains and Banat region in Romania, through the Timok area in Serbia to...1991). The ABTS belt is an economically important province which hosts Cu- and Au-rich porphyry and high...deposits are concentrated in the Panagyurishte region in the central parts of the zone. The porphyry-copper...capsules flash combust, raising the temperature in the region of the sample to ~ 1700 °C. The combusted gases |  | | Journal (article/letter/editorial) | | deposit is a part of the Rhodope metallogenic province (Stoyanov 1979) that comprises numerous volcanic-...Alpine–Himalayan orogenic system in the eastern Mediterranean region (inset A, Fig. 1). The massif is an Miner Deposita...fault-controlled with orientation changing across the region from NNW–SSE in the west to E–W in the Eastern...gangue mineral with lesser amounts of barite, chalcedony, jasper and calcite. The paragenesis is complex...Fluid inclusion data were obtained from surface and mine exposures of the main ore-bearing veins in the district |  | | Report (chapter) | | Japan, the North Island of New Zealand, the Philippines, Fiji and Spain are described. They are commonly...main gangue is quartz, commonly as aphanitic chalcedony, accompanied by varying quantities of pyrite...northwest it impinges on the Sonoran Basin and Range province and in the southeast, south of the Trans-Mexico...Chalcopyrite, galena and sphalerite dominate at the lowest mine levels. Gulf of Fonseca area, E1Salvador-Nicaragua-Honduras...rocks of similar age are known from the Aguacate cordillera, Costa Rica. They resemble those of San Sebastian |  | | Journal (article/letter/editorial) | | fluid system. By contrast, y18O values of quartz/chalcedony decrease systematically from siliceous breccia...volcanics and current models of plate-tectonics in the region, we propose a metallogenic model, which involves...Au–Ag deposits, notably in the western Pacific region, occur in subduction settings, where magmas tend...as well as other epithermal Au deposits in the region. Insert shows the location of major epithermal...Indonesia within the plate-tectonic setting of the region. Redrawn and modified after Milesi et al. (1994) |  | Sun, Jing-Gui, Zhang, Yong, Han, Shi-Jiong, Men, Lan-Jing, Li, Yi-Xin, Chai, Peng, Yang, Fan (2013) Timing of formation and geological setting of low-sulphidation epithermal gold deposits in the continental margin of NE China. International Geology Review, 55 (5) 608-632 doi:10.1080/00206814.2012.729658 | Journal (article/letter/editorial) | | low-sulphidation mineral deposits. Gold deposits in this region can be classified into three distinct types based...deep-seated fault within a magmatic arc or the back-arc region of an immature continental margin and is associated...mineral deposits have been discovered within the region, with the initial finding of the Wufeng gold deposit...margin structural belt/mutation belt of NE China Philippines Japan orogenic belt/mutation belt F1: Mudanjiang...contains multiple land masses and a basin and range region that underwent crustal evolution during the Archaean |  | | Journal (article/letter/editorial) | | Palinpinon Geothermal Field, Negros Island, Philippines: Implications for Precious Metal Deposition in...Palinpinon geothermal field, Negros Island, Philippines, is a high-temperature, liquid-dominated geothermal...geothermal system located on Negros Island, Philippines (Fig. 1). Deep drilling at Palinpinon makes it...reported that deep geothermal fluids at the Lihir gold mine in Papua New Guinea contain 13 to 16 ppb gold, and...Puhagan B A Mt Pinatubo Lagunao Dome 1334 m PHILIPPINES Manila Talines Dome 1710 m 10° Cuernos de |  | | Journal (article/letter/editorial) | | Simplified geological map of the western Thrace region in Greece showing porphyry Cu-(±Mo) and epithermal...southward migration of magmatic activity in the Aegean region from the Oligocene in northeastern Greece to the...geology During the Tertiary, the Rhodope metamorphic province in Bulgaria and Greece underwent a penetrative...presence of Tertiary magmatic rocks in the Aegean region. Slab break-off resulted in the local ascent of...very fine grained and accompanied by quartz, chalcedony, APS minerals and minor barian celestite, anglesite |  | LeFort, D., Hanley, J., Guillong, M. (2011) Subepithermal Au-Pd Mineralization Associated with an Alkalic Porphyry Cu-Au Deposit, Mount Milligan, Quesnel Terrane, British Columbia, Canada. Economic Geology, 106 (5) 781-808 doi:10.2113/econgeo.106.5.781 | Journal (article/letter/editorial) | | terrane in the Intermontane belt of the Canadian Cordillera (Fig. 1A; Ditson, 1997). The rocks of the Quesnel...Quesnel and Stikine terranes of the Canadian Cordillera have been subdivided into silicasaturated and...textures (e.g., bladed calcite, crustiform banding, chalcedony; White and Hedenquist, 1990) as well as diagnostic...$6.00 803 alkalic intrusions in the Canadian Cordillera (Thompson et al., 2001; Nixon and Laflamme, 2002;...subjacent porphyry mineralization, Acupan, Baguio district, Philippines: a fluid-inclusion and paragenetic |  | | Journal (article/letter/editorial) | | Tectonic reconstruction of the southwest Pacific region (modified after Hathaway, 1993). A. 5.5 Ma. B....17), tellurides, and gangue minerals (quartz, chalcedony, sericite, adularia, and roscoelite). Medium-grained...in the veins is intergrown with or replaced by chalcedony. Adularia and white mica occur within the medium-...This mineral is found between quartz grains and chalcedony where it rims native gold and occurs in contact...the veins up to 4 cm wide along with quartz, chalcedony, calcite, minor sericite, and V-bearing minerals |  | Camprubí, Antoni, Chomiak, Beverly A., Villanueva-Estrada, Ruth E., Canals, Àngels, Norman, David I., Cardellach, Esteve, Stute, Martin (2006) Fluid sources for the La Guitarra epithermal deposit (Temascaltepec district, Mexico): Volatile and helium isotope analyses in fluid inclusions. Chemical Geology, 231 (3) 252-284 doi:10.1016/j.chemgeo.2006.02.002 | Journal (article/letter/editorial) | | deposits of Fresnillo in Mexico and Antamok-Acupan in the Philippines were obtained R/Ra values of 1 to 2 and...twinnite Quartz, chalcedony, opal, bladed calcite phantoms, adularia Quartz, chalcedony, opal Quartz,...miargyrite (silver-mineral association) Quartz, chalcedony, bladed calcite phantoms, adularia, sericite...the analyses plot within the same compositional region, A. Camprubí et al. / Chemical Geology 231 (2006)...there are no evaporites or connate brines in the region nearby. There is no tendency towards either the |  | Ronacher, E., Richards, J. P., Reed, M. H., Bray, C. J., Spooner, E. T. C., Adams, P. D. (2004) Characteristics and Evolution of the Hydrothermal Fluid in the North Zone High-Grade Area, Porgera Gold Deposit, Papua New Guinea. Economic Geology, 99 (5) 843-867 doi:10.2113/gsecongeo.99.5.843 | Journal (article/letter/editorial) | | and June 2001, the mine is a significant gold producer in the southwest Pacific region. Reserves and resources...Schematic north-south cross section through the Porgera mine, showing a dioritic intrusion in the center and...meters), and the northing refers to the Porgera mine grid. H, C, S) to characterize the hydrothermal...(prestage I) occur in the central and deep parts of the mine. Magnetite is the dominant mineral and contains...most abundant in zone VII, the richest zone of the mine hosted by the Roamane fault zone. In this area, |  | Davies, A. G. S., Cooke, D. R., Gemmell, J. B., van Leeuwen, T., Cesare, P., Hartshorn, G. (2008) Hydrothermal Breccias and Veins at the Kelian Gold Mine, Kalimantan, Indonesia: Genesis of a Large Epithermal Gold Deposit. Economic Geology, 103 (4) 717-757 doi:10.2113/gsecongeo.103.4.717 | Journal (article/letter/editorial) | | Hydrothermal Breccias and Veins at the Kelian Gold Mine, Kalimantan, Indonesia: Genesis of a Large Epithermal...associated with a lower Miocene magmatic center in the province of East Kalimantan, Indonesia (Fig. 1). It is...outside of the immediate vicinity of the Kelian mine area. Their minimum thickness is 650 m. The base...(Ferguson, 1986; van Leeuwen et al., 1990; local mine terminology) would be better described as plagioclase-hornblende...arsenopyrite, bou = boulangerite, cal = calcite, cdy = chalcedony, chl = chlorite, crb = carbonate, cin = cinnabar |  | | Journal (article/letter/editorial) | | Au–(Ag) deposits and prospects in the Greek Thrace region (modified after Melfos et al., 2002) Mr Maronia...higher, these veins evolve into banded amethyst=chalcedony veins and spatially related quartz þ adularia...refers to high-sulfidation alunite þ barite chalcedony veins (up to 20 cm thick) and alunite þ barite-cemented...Demetrios consists of base metal-rich amethystine= chalcedony quartz veins and is similar to stage III veins...for stage II illite and adularia. Amethystine=chalcedony quartz veins are also exposed 1 km northwest |  | | Journal (article/letter/editorial) | | Vein-filling crustiform chalcedony, quartz Present, minor Vein-filling crustiform chalcedony and quartz Abundant...sulfidation deposits in the Baguio District, Philippines (Cooke and McPhail, 2001), Golden Quadrilateral...Fig. 1. a Simplified geological map of the Thrace region in Greece showing porphyry Cu-(Mo) and epithermal... rocks of the Oligocene-Miocene Greek Rhodope province (Fig. 1) (Dimou et al., 1994; Voudouris and Arikas...deposits Ore deposits in northeastern Greece (Rhodope province and Limnos Island) were formed during the final |
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