 | | Journal (article/letter/editorial) | | University] at 05:52 29 January 2015 FRENCH CREEK IRON MINE, CHESTER COUNTY, PENNSYLVANIA M any minerals described...specimens. One such locality is the French Creek iron mine, Chester County, Pennsylvania, an occurrence worthy...presence of microscopic exsolution products such as sphalerite and stannite, respectively. Trace tellurium,...Chilean and Argentine Andes and in Indonesian and Philippine porphyry systems. Loosely related to some porphyry...exhibiting a complex chalcopyrite crystal on sphalerite from Dalnegorsk, Primorskiy Kray, Russia. Houston |  | | Journal (article/letter/editorial) | | Rosario–Bunawan district is situated about 200 km north of Davao City, the capital of the Mindanao Island...Southern Philippines. Gold is produced from the Co-O mine, containing about 2,034,000 t of ore at 10.9 g/t...mineralization in the Rosario–Bunawan district and the Co-O mine is confined to narrow (0.2–4 m) low-sulfidation...a sinistral strike-slip sense of deformation (Philippine Fault trend); (2) the ENE–WSW-trending dextral...shear or shear veins formed in the Co-O, the Philippine Fault, and Palawan trends during regional NW–SE |  | | Journal (article/letter/editorial) | | 1967, pp. 472-481 THE GEOLOGY OF THE THANKSGIVING MINE, BAGUIO DISTRICT, MOUNTAIN PROVINCE, PHILIPPINES..... ABSTRACT At theThanksgiving minein Luzon,Philippine Islands, a number of small sulfideorebodiesof...The ore is massive sulfide, consistingmainly of sphalerite and pyrite with minor amountsof chalcopyrite...and the orebodies. INTRODUCTION THE Thanksgiving mine of Benguet Exploration, Inc. is located in the ...6.4 km from BaguioCity and 5 km from Acupangold mine (Fig. 1). Mining operationsbeganin 1957and to the |  | | Journal (article/letter/editorial) | | article is publishedwith the permissionof the Philippine Government and the United Nations. The opin-...features ............................. Masinloc mine ............................... 647 648 Fernandez...Fernandez, 1968; Fernandez et al., 1956; de la Acoje mine ................................. 648 cluded either........ 649 649 Bagacay mine .............................. 649 Barlo mine .................................... Hixbar mine ................................ Discussion ................................. |  | Sajona, Fernando G., Izawa, Eiji, Motomura, Yoshinobu, Imai, Akira, Sakakibara, Hiroyuki, Watanabe, Koichiro (2002) Victoria Carbonate-Base Metal Gold Deposit and Its Significance in the Mankayan Mineral District, Luzon, Philippines. Resource Geology, 52 (4) 315-328 doi:10.1111/j.1751-3928.2002.tb00142.x | Journal (article/letter/editorial) | | Koichiro WATANABE* Mines and Geosciences Bureau, North Avenue, Diliman, Quezon City, Philippines [e-mail:...northeast. This would suggest a regional south to north hydrothermal gradient, consistent with the similar...be highly prospective, especially if they occur north of identified plutons and volcanic centers. Keywords:...district lies within the West Luzon arc, which extends north to south from the Batanes group of islands to Batangas...the LCC is affected by horsetail splays of the Philippine fault, a major left-lateral transcurrent eral |  | | Journal (article/letter/editorial) | | “disease”, particularly the chalcopyrite disease in sphalerite (Barton, 1978), has been controversial, with...hypothesis of replacement of the Fe-component in host sphalerite by chalcopyrite (Barton and Bethke, 1987; Kojima...However, since the Fe content in sphalerite is generally low in Kuroko sphalerite (e.g., Urabe, 1974), there...origin for the chalcopyrite disease in the Kuroko sphalerite (e.g., Shimazaki, 1988). Kojima (1990) demonstrated...demonstrated experimentally that chalcopyrite disease in sphalerite can form by coprecipitation: fine-grained chalcopyrite |  | MAGLAMBAYAN, Victor B., ISHIYAMA, Daizo, MIZUTA, Toshio, MATSUBAYA, Osamu, ISHIKAWA, Yohei (2001) Oxygen and Carbon Isotope Study of Calcite and Dolomite in the Disseminated Au-Ag Telluride Bulawan Deposit, Negros Island, Philippines. Resource Geology, 51 (2) 107-116 doi:10.1111/j.1751-3928.2001.tb00085.x | Journal (article/letter/editorial) | | grains intergrown with or filling voids between sphalerite, pyrite, chalcopyrite, galena and tennantite...mined jointly by Philex Mining Corporation and Philippine National Bank. The mining rate was initially...major tectonic elements such as the Philippine Mobile Belt, the Philippine Fault, Manila Trench, Negros Trench...located in the Philippine Mobile Belt which is transected by the left lateral Philippine Fault Zone (Fig...sulfides in their order of decreasing abundance are sphalerite, galena, chalcopyrite, pyrite and tennantite |  | | Journal (article/letter/editorial) | | presence of tennantite-tetrahedrite, chalcopyrite, sphalerite, galena, native gold/electrum and gold-silver...ore minerals of the Victoria gold deposit are sphalerite, galena, chalcopyrite, tetrahedrite and native...spatial variations of sulfide distribution in the mine, as well as different periods of formation suggested...information of economic significance that can assist mine exploration. The ore minerals and paragenesis can...on January 11, 2001 Exploration Geology, Lepanto Mine Division, Lepanto Consolidated Mining Company, Mankayan |  | | Book (edition) | | segments or subfiles: (N) Bibliography and Index of North American Geology (1785-1970) (T) Bibliography of...Bibliography and Index of Geology Exclusive of North America (1933-1968) (B) Bibliography and Index of...early volumes of the Bibliography and Index of North American Geology, edited by John M. Nickles and...older volumes of the Bibliography and Index of North American Geology (subfile N in the online database)...Bibliography and Index of Geology Exclusive of North America (subfile E), the indexing was arranged in |  | | Journal (article/letter/editorial) | | L6LLINGITE FROM THE PHILIPPINE ISLANDS. JOSEPH MURDOCH AND DION L. GARDNER. ABSTRACT. Theraremineral1611ingite...of the ore in the San Mauricio mine, Paracale Mining District, Philippine Islands. Its relationshipto the...the San Maur{c{oMine, Paracaleminingdistrict,Philippine Islands,1611{ngite was first found {n I93 9 and...mineral "X" by the geologicaland chemicalstaffs of the mine. Identificationwas hamperedby the fact that the...fine-grained 161lingire, with a few patches of sphalerite, and minor amountsof galena,argentire(?), stephanite |  | | Journal (article/letter/editorial) | | 4) WNW-trending quartz veins associated with sphalerite and galena at deeper part, while enargite and...in veinlet quartz associated with galena and sphalerite (stage 4) are composed of liquid-rich two-phase...which veinlet quartz associated with galena and sphalerite precipitated. In addition to a change in temperature-pressure...fracture-controlled quartz veinlet associated with galena and sphalerite, a decrease in pressure is supposed to have occurred...Imai, 2001) deposits of the western flank of the Philippine Central Cordillera in northern Luzon, the Dizon |  | MAGLAMBAYAN, Victor B., ISHIYAMA, Daizo, MIZUTA, Toshio, IMAI, Akira, ISHIKAWA, Yohei (1998) Geology, Mineralogy, and Formation Environment of the Disseminated Gold-Silver Telluride Bulawan Deposit, Negros Occidental, Philippines. Resource Geology, 48 (2) 87-104 doi:10.1111/j.1751-3928.1998.tb00009.x | Journal (article/letter/editorial) | | crustiform quartz veins. The ore minerals are sphalerite, galena, chalcopyrite, pyrite and tetrahedite-tennantite...while fluid inclusions in quartz, calcite and sphalerite within the dacite porphyry breccia pipes homogenize...rock-stratigraphic units are summarized. The Tameters north of the Bulawan delave Limestone, the Middle Miocene...polished sections of rocks and ores collected from the mine workings and drill cores were examined under the...cylinder trending N 8°W with a gentle pitch to the north (Fig. 3b). It measures about 400 m long and has |  | | Journal (article/letter/editorial) | | Bayugo (Fig. 2). Regional Tectonic Setting The Philippine archipelago currently lies at the juncture of...of two major tectonic plates: the Philippine Sea plate to the east, and the Eurasia plate to the west...Caught between these two converging plates is the Philippine mobile belt (Gervasio, 1966), an actively deforming...with the Philippine oceanic basement. East of the central and southern Philippines, the Philippine trench...trench is consuming the Philippine Sea plate. Farther north, the bathymetric depression of the east Luzon |  | Manalo, Pearlyn C., Imai, Akira, Subang, Leo L., de los Santos, Mervin C., Yanagi, Kyoka, Takahashi, Ryohei, Blamey, Nigel J.F. (2018) Mineralization of the Northwest Quartz-Pyrite-Gold Veins: Implications for Multiple Mineralization Events at Lepanto, Mankayan Mineral District, Northern Luzon, Philippines. Economic Geology, 113 (7) 1609-1626 doi:10.5382/econgeo.2018.4606 | Journal (article/letter/editorial) | | earliest stage, stage 1, is characterized by sphalerite + chalcopyrite + pyrite ± magnetite veins cutting...intergrown with chalcopyrite, bornite, and minor sphalerite. The stage 3a veins and host-rock alteration...is accommodated by the sinistral strike-slip Philippine fault (Aurelio, 2000), the splays of which are...cross sections in Figure 2. portion of the Lepanto mine and designated as the middle Miocene Bagon intrusive...SCIENTIFIC COMMUNICATIONS A A elevation (m) 1300 North Fault Lepanto Fault Tohking Fault West Fault |  | Frias, Sofia Marah P., Imai, Akira, Takahashi, Ryohei, Balangue‐Tarriela, Ma. Ines Rosana, Arcilla, Carlo, Blamey, Nigel (2019) Geology, Alteration, and Mineralization of the Kay Tanda Epithermal Gold Deposit, Lobo, Batangas, Philippines. Resource Geology, 69 (4) 351-384 doi:10.1111/rge.12205 | Journal (article/letter/editorial) | | sulfur fugacity determined from the FeS content of sphalerite at temperatures estimated by fluid inclusion microthermometry...Mines and Geosciences Bureau (MGB), 2004). Most Philippine epithermal deposits are Plio-Pleistocene in age...the Western Luzon Volcanic Arc and the Eastern Philippine Volcanic Arc, which correspond to the subduction...Trench and the subduction of the Philippine Sea Plate along the Philippine Trench, respectively (Mitchell...archipelago, the surrounding marginal sea basins, the Philippine Fault Zone, and other major faults. Also shown |  | | Journal (article/letter/editorial) | | that of chalcopyrite and basically is of the sphalerite-type. Space grotp I42m; ao 5.29O A, co 10.465...and some famatinite. Pure famatinite from the same mine gives a powder pattern markedly distinct from enargite...Japanese: H. Imai (1943), who studied the N{ankayan, Philippine Islands locality; n{. WatanabE (1943), who studied...minute, imperfect, twinned crystals from the Hokuetsu mine, Japan, Sawada determined that luzonite is tetragonal...have a sphalerite-type structure, since their powder photographs closely resemble those of sphalerite. chalcopyrite |  | | Journal (article/letter/editorial) | | 251-268 THE OCCURRENCE ACUPAN OF TELLURIDE GOLD MINE, MINERALS MOUNTAIN AT THE PROVINCE, PHILIPPINES...veins in the Baguio district of Northern Luzon, Philippine Islands, are of the epithermaltype. They occur...1928 in very high grade ore from the Antamok gold mine. Recently, tellurides were recognizedin high grade...the Acupan gold mine. The examination of other patchesof high-grade ore in this mine has shown the associationof...INTRODUCTION THE Acupangold mine,formerlyknownas the Balatocgold mine, is situated in the Baguiodistrictin |  | | Journal (article/letter/editorial) | | of Hamburg, Grindelallee 48, D-20146 Hamburg, Germany Received: 20 July 1992/Accepted: 21 February 1994...in the Miocene-Pliocene. The Santo T o m a s II Mine was opened by the Philex Mining Corporation in 1957...as an open pit and, after 1960, as an underground mine, Copper ore reserves have been estimated at 328...(Philex Mining Corporation 1989). At present the mine is operating economically because of the high gold...975, 908, 840 and 745 m underground levels of the mine. Mineral analyses were carried out on a Cameca Camebax |  | | Journal (article/letter/editorial) | | into pyrite-type ore, chalcopyrite-type ore, and sphalerite-type ore on the basis of chemical composition...hardly recognized in the chalcopyrite-type and sphalerite-type ores. The ores from the Takara deposit have...Ore Deposit The South Fossa Magna is bounded its north by the Tonoki-Aikawa Tectonic Line and the west...preset-day plate boundary between the Eurasia and the Philippine Sea Plates. Neogene submarine volcaniclastic...Main ore body, East ore body, West ore body and North ore body have been known. They are situated within |  | | Journal (article/letter/editorial) | | Two types of ores are recognized in the Huanzala mine, Peru. Zinc and lead ore of adularia-sericite type...copper ores from the Teine mine, Hokkaido, Japan and the Chinkuashih mine, Taiwan are acid-sulfate type... The enargite and luzonite ores in the Hokuetsu mine, Japan are closely associated with native sulfur...summarized as follows. The mine is situated in central Peru, about 250 km north of Lima. This region is...bornite, wurtzite, Huanzala mine, Teine mine, Chinkuaqshih mine, Hokuetsu mine. 147 148 H. IMAI RESOURCE |  | | Journal (article/letter/editorial) | | 652 REVIEWS The Mineral Resourcesof the Philippine Islands for the Years 1917 ELMER D. MERRILL, VICTORIANO...Science, Bureau of Printing, Government of the Philippine Islands, Manila, 1920. Pp. 75, pls. 8, tables...analyses. This issue of Mineral Resources of the Philippine Islands deals with the years 1917-18, following...and the Mountain Provinces, and the largest single mine is the Benguet Consolidated Mining Company, in the...45 per cent zinc; the minerals are galena and sphalerite, the gangue is quarts, and the country rock andesite |  | 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) | | Mining, Jl. Torsiojo, Kotanopan, Mandailing Natal, North Sumatra, Indonesia. 0361-0128/11/3996/1399-26 ...dominated by quartz-carbonate-pyrite-illite-(adularia-sphalerite-galena) veins and breccias (aka carbonate-base...ippi Baguio district Phil (3.1 - 0.5 Ma) Philippine Plate 16°N gh orou b Scar 20°N ne T renc...Ridg Eurasian Plate 12°N Sulu Trench 8°N Philippine Fault 200 km FIG. 1. Major tectonic elements...transpressional displacement on the leftlateral Philippine fault system, rapid uplift and erosion, intrusion |  | Niaei, Ramin Mohammadi, Daliran, Farahnaz, Nezafati, Nima, Ghorbani, Mansour, Zakariaei, Jamal Sheikh, Kouhestani, Hossein (2015) The Ay Qalasi deposit: An epithermal Pb–Zn (Ag) mineralization in the Urumieh–Dokhtar Volcanic Belt of northwestern Iran. Neues Jahrbuch f??r Mineralogie - Abhandlungen: Journal of Mineralogy and Geoche, 192 (3) 263-274 doi:10.1127/njma/2015/0284 | Journal (article/letter/editorial) | | mineral content of up to 60 vol.% is dominated by sphalerite, galena, pyrite, and chalcopyrite with minor...‰ for sphalerite, suggesting a magmatic input for the sulfur. Low Fe contents of the sphalerite, the hydrothermal...Schweizerbart’sche Verlagsbuchhandlung, Stuttgart, Germany DOI: 10.1127/njma/2015/0284 www.schweizerbart...metamorphic rocks are exposed in a small outcrop north of Ay Qalasi and consist of slates and phyllites...dykes of diorite-monzodiorite composition in the north- eschweizerbart_xxx F-0284_njma_192_3_0263_0274_Niaei_0284 |  | | Book (volume) | | the guidetexts are geographically arranged from north to south. Manuscripts of the guidetexts were critically...associated with the Kuril arc, and the other with the north Honshu arc. The junction of the two major volcanic...complicated, folded and corru¬ Kokuriki mine (Stop 4) The Kokuriki mine is located in the Hiyoshi district...faults striking N50°-60°W. Nikura mine (Stop 5) The Nikura mine is located in the Nikura district, Saroma...Saroma town, about 21 km north of the Kitami city and 4 km southeast of the Nikura town. Geological data |  | | Journal (article/letter/editorial) | | primary mineral assemblage of pyrite-chalcopyrite-sphalerite with significant amounts of supergene copper... S S S S S S S S S S S S S S S S Philippine Mobile Belt Sundaland S S S S S S S S... and Malaiba (Fig. 1). However, only the Hixbar mine in Rapu-rapu Island, Albay was put into production...primary mineral assemblage of pyrite-chalcopyrite-sphalerite with significant amounts of supergene copper...General Geology The oblique convergence of the Philippine Sea Plate with respect to Sundaland brought about |
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