 | | Journal (article/letter/editorial) | | porphyry Cu-Au mineralization at the Dizon mine, Philippines William P. Midea1 | Keiko Hattori1 | Gabriel...Sciences, University of the Philippines Diliman, Quezon City, Philippines Correspondence William P. Midea...geothermobarometry, Fe-Ti oxide geothermobarometry, Luzon arc, magma oxidation, magmatic hydrothermal activity...Au-rich porphyry Cu deposit in the Luzon arc, Philippines. The Luzon arc hosts many young, <10 Ma, porphyry...the water contents. 2 | R EGIONAL G EOLOG Y The Luzon arc formed in response to the eastward subduction |  | | Journal (article/letter/editorial) | | Southeast Porphyry Cu-Au Deposit, Mankayan, Philippines Akira IMAI Abstract: The Lepanto Far Southeast...Cu-Au deposit in Mankayan, Benguet Province, Philippines. The principal orebody consists of potassic alteration...associated with quartz-anhydrite stockworks are chalcopyrite and pyrite with minor bornite and Bi-Te-bearing...infilling in the interstices between clasts. Chalcopyrite-Au mineralization associated with molybdenite...heterogeneous entrapping in the two-fluid unmixing region. Sulfur isotopes of aqueous sulfide and sulfate |  | | Journal (article/letter/editorial) | | copper mineralization: evidence from Mount Pinatubo, Philippines, and Bingham Canyon, Utah, USA Received:...2001 Ó Springer-Verlag 2001 Abstract Mount Pinatubo in the Philippines, known for its cataclysmic eruption...isotope values of 0& for large deposits. Mount Pinatubo is famous for the cataclysmic eruption of June...melt Pinatubo Mount Pinatubo is located in the Bataan arc in western Luzon Island, Philippines (Fig....Southeast and Santo Tomas II mines (Fig. 1a). Mount Pinatubo itself hosts several porphyry copper±gold deposits |  | Borisova, Anastassia Yu., Pichavant, Michel, Polvé, Mireille, Wiedenbeck, Michael, Freydier, Remi, Candaudap, Frédéric (2006) Trace element geochemistry of the 1991 Mt. Pinatubo silicic melts, Philippines: Implications for ore-forming potential of adakitic magmatism. Geochimica et Cosmochimica Acta, 70 (14) 3702-3716 doi:10.1016/j.gca.2006.04.030 | Journal (article/letter/editorial) | | element geochemistry of the 1991 Mt. Pinatubo silicic melts, Philippines: Implications for ore-forming potential...2006 Abstract The dacite pumice erupted from Mt. Pinatubo on June 15, 1991 (whole-rock, rhyolitic groundmass...minimum of 100 t Au and 5 · 105 t Cu from the Mt. Pinatubo magma. Our data suggest that intrusives having...Cl, Sr/Y, Pb/Ce, Mo/Ce, As/Ce and Sb/Ce in Mt. Pinatubo melts reflect the contribution of deep fluids derived...et al., Trace element geochemistry of the Mt. Pinatubo silicic melts 1997; Mungall, 2002). Understanding |  | | Journal (article/letter/editorial) | | on six ovoid-shaped inclusions of pyrrhotite, chalcopyrite, and/or intermediate sulfide solid solution...km3 of dacitic tephra at Pinatubo Volcano on the Philippine island of Luzon ( Scott et al., 1996; Wolff...Wolff and Hoblitt, 1996). Based on TOMS data, the Pinatubo SO2 cloud was estimated at 14 to 26 Mt (Krueger...temperature of 800 to 850°C. In the case of the 1991 Pinatubo dacites, conventional sulfur isotopic measurements...systematics in anhydrite and chalcopyrite crystals from the 1991 Pinatubo eruption by ion microprobe. |  | | Journal (article/letter/editorial) | | Porphyry and Lepanto Epithermal Cu–Au Deposits, Philippines Jeffrey W. HEDENQUIST,1,2 Antonio ARRIBAS R.1...world-class Far Southeast (FSE) porphyry system, Philippines, includes the FSE Cu–Au porphyry deposit, the...permil). The minerals from FSE include stage 2 chalcopyrite (1.6 to 2.6 permil), pyrite (1.1 to 3.4 permil)...(~10:1 H2S:SO4) responsible for deposition of chalcopyrite. Stage 2 fluids were relatively oxidized in the...sulfidation state of minerals increasing from chalcopyrite stability in the porphyry deposit to that of |  | Reich, Martin, Parada, Miguel A., Palacios, Carlos, Dietrich, Andreas, Schultz, Frank, Lehmann, Bernd (2003) Adakite-like signature of Late Miocene intrusions at the Los Pelambres giant porphyry copper deposit in the Andes of central Chile: metallogenic implications. Mineralium Deposita, 38 (7) 876-885 doi:10.1007/s00126-003-0369-9 | Journal (article/letter/editorial) | | giant porphyry copper deposit in the Andes of central Chile: metallogenic implications Received: 12 November...the Los Pelambres giant porphyry copper deposit, central Chile (32S). Located within the southern portion...Keywords Adakites Æ Giant porphyry copper deposits Æ Central Andes Introduction The genetic link between magmatism...crust (Cathles 1981; Sawkins 1990). The Andes of central Chile host some of the world’s largest porphyry...black line), and the volcanic gap separating the Central Volcanic Zone (CVZ) and the Southern Volcanic Zone |  | XIAO, Bo, QIN, Kezhang, LI, Guangming, LI, Jinxiang, XIA, Daixiang, CHEN, Lei, ZHAO, Junxing (2012) Highly Oxidized Magma and Fluid Evolution of Miocene Qulong Giant Porphyry Cu-Mo Deposit, Southern Tibet, China. Resource Geology, 62 (1) 4-18 doi:10.1111/j.1751-3928.2011.00177.x | Journal (article/letter/editorial) | | in Mexico (Luhr et al., 1984) and Mount Pinatubo in the Philippines (Bernard et al., 1991). The Qulong...of Lhasa city, the capital of Tibet Autonomous Region and 45 km north of the YarlungTsangpo River (the...stock intruded into biotite monzogranite in the central part of the ore district. The minerals of this...associated with abundant disseminated and stockwork chalcopyrite, molybdenite and pyrite mineralization. The...with rare disseminated pyrite + chalcopyrite or pyrite + chalcopyrite thin veins. The porphyrite is unaltered |  | | Journal (article/letter/editorial) | | the Dizon Porphyry Cu-Au Deposit, Zambales, Philippines Akira IMAI* Department of Earth and Planetary...porphyry Cu-Au deposit in western central Luzon, Zambales, Philippines, is documented in terms of mineral...stockwork amethystic quartz veinlets associated with chalcopyrite, bornite, magnetite and Au enveloped by chlorite...quartz veinlets with chalcopyrite and pyrite associated with Au and chalcopyrite and pyrite stringers...associated with advanced argillic alteration. Chalcopyrite and bornite associated with magnetite in quartz |  | | Journal (article/letter/editorial) | | THE GEOLOGY OF LUZON, P.I. WARREN D. SMITH, PH.D. Chief of Division of Mines, Bureau of Science, Manila...INTRODUCTION PHYSIOGRAPHY The CoastalPlains The Central Plain The Albay Plain The Intermediate Uplands...ECONOMIC Coal Iron Oil Gold Copper INTRODUCTION Luzon is the largest island of the Philippine group and...mining field, evidence is already abundant that Luzon will before many years have a place in the very...very first rank. Finally, M'anila, the capital of Luzon, through her Bureau of Science, an institution not |  | | Journal (article/letter/editorial) | | Susceptibility:A Case Study from the Barberton Region, South Africa Shunso Ishiharal, Laurence J. Robb2...collection of Archaean granitoids of the Barberton region using a portable KT5 magnetic susceptibilitymeter...entire range of Archaean granitoids in the Barberton region, housed at the Economic Geology Research Institute...ILMENITE SERIES Fig. 1. Geologic map of the Barberton region (after Anhaeusser and Robb, 1980, slightly modified)...superceded the widespread TTG plutonism in the region was characterised by emplacement of large, multicomponent |  | 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...sulfidation epithermal veins of the southern and central Baguio district are mostly between +1 and +6 per |  | | Journal (article/letter/editorial) | | settings: an example from Batan Island (Luzon volcanic arc, Philippines) Nicole Métrich a,Ł , Pierre Schiano...atmosphere (e.g., El Chichon in Mexico, Pinatubo in Philippines, Redoubt in Alaska). These high sulfur... from Batan Island in the northern part of the Luzon arc. This volcanic arc is related to the eastward...Solution) with variable FeS and NiS mol% (Fig. 2c). Chalcopyrite (CuFeS2 ) which occurs in B102 xenolith (Fig...SO2 cloud from the June 15, 1991 eruption of Mount Pinatubo, Geology 20 (1992) 867–870. [3] T.M. Gerlach |  | | Journal (article/letter/editorial) | | by Jones et al. (1967). Igneous activity in the region began in the Late Cretaceous with the intrusion...intergrowths similar to those described from Mt. Pinatubo (Baker and Rutherford, 1996; Pallister et al....a laboratory experiment of anhydrite-saturated Pinatubo dacite at 760 jC, 2200 bar, and MNO-buffered oxygen...‘‘SR8’’-similar experimental run products of Mt. Pinatubo dacite with the assemblage hornblende + magnetite...comparison, the sulfur-rich magmas erupted from Mt. Pinatubo and El Chichón contained 1000– 4000 and 5000 |  | | Journal (article/letter/editorial) | | from Mount Pinatubo (Philippines), Volcán Popocatépetl (Mexico), Satsuma– Iwojima (Japan) and Mount St...Fe–S–O melt, degassing, magma mixing, Pinatubo, Popocatépetl, Mount St. Helens, Bingham, Tintic, Satsuma–Iwojima...suite d’échantillons provenant du mont Pinatubo (Philippines), du volcan Popocatépetl (Mexique), Satsuma–Iwojima...Tower, 8741 Paseo de Roxas Blvd., Makati City, Philippines 1233 38#5-oct.00-2188-12 1233 23/11/00, 13:14...Fe–S–O immiscible, dégazage, mélange de magmas, Pinatubo, Popocatépetl, mont St. Helens, Bingham, Tintic |  | Cao, MingJian, Hollings, Pete, Cooke, David R., Evans, Noreen J., McInnes, Brent I.A., Qin, KeZhang, Li, GuangMing, Sweet, Gabe, Baker, Mike (2018) Physicochemical Processes in the Magma Chamber under the Black Mountain Porphyry Cu-Au Deposit, Philippines: Insights from Mineral Chemistry and Implications for Mineralization. Economic Geology, 113 (1) 63-82 doi:10.5382/econgeo.2018.4544 | Journal (article/letter/editorial) | | under the Black Mountain Porphyry Cu-Au Deposit, Philippines: Insights from Mineral Chemistry and Implications...deposit in the Baguio district, Northern Luzon (Philippines) is associated with late Miocene to Pliocene...Introduction The Baguio district of Northern Luzon, Philippines (Fig. 1A) is considered one of the world’s...Yonsei University user 64 CAO ET AL. 18O 120O Luzon 123O Fig.B Manila 126O A 120O32' 120O34'...granodiorite Pliocene & Pleistocene intrusions Central Cordillera diorite complex Mafic Dike complex |  | Schaarschmidt, Anna, Klemd, Reiner, Regelous, Marcel, Voudouris, Panagiotis C., Melfos, Vasilios, Haase, Karsten M. (2021) The formation of shoshonitic magma and its relationship to porphyry-type mineralisation: the Maronia pluton in NE Greece. Lithos, 380. 105911pp. doi:10.1016/j.lithos.2020.105911 | Journal (article/letter/editorial) | | beneath Eurasia since the Cretaceous, and the Aegean region (Fig. 1) has been extending since 35 Ma due na...Oligocene sediments and volcanic rocks in the central part and by greenschist-facies rocks of the Circum...a porphyry Cu-Mo±Re±Au mineralisation with a chalcopyrite + molybdenite + pyrrhotite + pyrite sulphide...titanite, and minor quartz, orthopyroxene and chalcopyrite. Subhedral phenocrysts (1 to 2 mm in size) of...feldspar, epidote, chlorite, calcite, pyrite, chalcopyrite, covellite and hematite (Fig. 2). 5 Journal |  | | Journal (article/letter/editorial) | | (Nielson 1976), the USA (Nielson 1979), and the Philippines (Sillitoe and Gappe 1984). Corbett and Leach...(‘phyllic alteration’), which in turn grades into a region of lower temperature, greenschist facies metamorphism...infiltration of hot fluids upward and outward from a central source only a couple of hundreds of metres across...high-grade ore zones occurs in veins and veinlets of chalcopyrite (Titley 1990). For deposits in the southwestern...Areas of stockwork are usually localized in the central potassic zone and most are A-type veins. Tabular |  | Wu, Chu, Hong, Tao, Xu, Xing-Wang, Cao, Ming-Jian, Li, Hao, Ke, Qiang, Li, Hang, Dong, Lian-Hui (2019) Constraints on the formation of the Baogutu reduced porphyry copper deposit (West Junggar, NW China): Assessing the role of mafic magmas in mineralization. Lithos, 336. 112-124 doi:10.1016/j.lithos.2019.03.034 | Journal (article/letter/editorial) | | West Junggar region lies within the central part of the west domain of SC the Central Asian Orogenic...pyrrhotite, pyrite, and ACCEPTED MANUSCRIPT chalcopyrite. The plagioclase phenocrysts have euhedral to...ilmenite, magnetite, pyrrhotite, pyrite, and chalcopyrite) with a porphyritic texture (Figs. 3d and D... Significant disseminated interstitial PT chalcopyrite and pyrite occurs in intracrystalline cracks...subordinate arsenopyrite, bornite, SC minerals chalcopyrite, pyrrhotite, pyrite, molybdenite, and gold occur |  | | Report (chapter) | | mineralization in the Karacaali Magmatic Complex, central Anatolia, Turkey OKAN DELIBAŞ1*, YURDAL GENÇ1...calc-alkaline Karacaali Magmatic Complex (KMC), in the Central Anatolian Crystalline Complex, is an example of...available at http://www.geolsoc.org.uk/SUP18434. The Central Anatolian Crystalline Complex (CACC) (Göncüoğlu...et al. 2001; İlbeyli et al. 2004) situated in central Turkey, east of Ankara (Fig. 1). This crustal segment...İlbeyli 2005). Since Early Cretaceous times this region is thought to have undergone a complex magmatic |  | Wang, Minfang, Gutzmer, Jens, Michalak, Przemyslaw P., Guo, Xiaonan, Xiao, Fan, Wang, Wei, Liu, Kun (2014) PGE geochemistry of the Fengshan porphyry–skarn Cu–Mo deposit, Hubei Province, Eastern China. Ore Geology Reviews, 56. 1-12 doi:10.1016/j.oregeorev.2013.07.006 | Journal (article/letter/editorial) | | Elatsite in Bulgaria, and Santo Tomas II in the Philippines, etc. (Economou-Eliopoulos, 2010; Mutschler et...50–100 μm in size, and always as inclusions in chalcopyrite, or textural relation with bornite (Pašava et... Potassic alteration is present mostly in the central part of the granodiorite. It is represented by...include sericite, quartz, pyrite, molybdenite, chalcopyrite and bornite (Fig. 5c to f). Argillic alteration...in the Fengshan deposit. In summary, from the central part of the granodiorite outward, it developed |  | | Report (issue) | | of the numerous setbacks which mining in the Philippines has suffered, and the great handicaps with which...cent of the total consumption of coal in the Philippines. Raw cement materials at Naga, Cebu, which were...GENERAL REMARKS Of the metallic minerals of the Philippines, gold is first in importance, and its production...and silver minerals are known to occur in the Philippines, but no large deposits of this metal have as...values of gold and silver exported from the Philippines during the last three years are as follows Table |  | | Journal (article/letter/editorial) | | deposit, located in the easternmost portion of the Central Asian Orogenic Belt in China. The gold-bearing...zonations are Cu-Au→Au→Au-Ag→Pb-Zn, distributed from central orebody to the outer part. Mesozoic granitoids... assemblages in the orebodies are dominanted by pyrite, chalcopyrite, pyrrhotite, galena, sphalerite, molybdenite...bearing minerals are siegenite, pyrite, and chalcopyrite (Zhao et al., 2012; Zhang et al., 2013; Zhang...granular texture and is scattered or wrapped in chalcopyrite. The native gold in the siegenite has a xenomorphic |  | | Journal (article/letter/editorial) | | mss) phase and one to two Cu-rich (cubanite, chalcopyrite iss) phases, making up ∼ 84 and ∼ 16 area %...the late stage, consisting of Cu-rich phases (chalcopyrite, bornite, digenite iss), are hosted exclusively...into three regions (Fig. 2b, c): (i) the Konya region, for which both subduction (Doglioni et al., 2002...a Cu-poor (pyrrhotite), one to two Cu-rich (chalcopyrite ± cubanite), and sometimes an Nirich (pentlandite)...Type 3 sulfides containing a Cu-rich phase (chalcopyrite or chalcocite) and an Fe-rich phase (pyrite/Fig |  | | Journal (article/letter/editorial) | | Volcano, Mexico (Luhr et al., 1984) and Mount Pinatubo, Philippines (McKibben et al., 1996). Fluids that...however, such as the dacite that erupted at Mount Pinatubo in 1991, were so oxidizing that their fluids...of pumice from the 1991 eruption of Mount Pinatubo, Philippines. The microcrystal-to-crystal variations...MT (Field et al., this volume). Open symbols—chalcopyrite, solid symbols—pyrite for porphyry data. Slope...of the anhydrite–chalcopyrite data, suggesting retrograde exchange in the chalcopyrite. The important point |
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