 | | Journal (article/letter/editorial) | | GeosciencesBureau, North Avenue, Diliman,Quezon City, Philippines Abstract--The mining industry sector is a major...the framework of very stiff competition in the region for investments, new thrusts and directions, without...this period. Gold was a natural attraction to the Spanish colonizers who started placer gold mining in various...mining ensued and fostered the development of a mine in Panay Island in 1842, and another (now the Lepanto...north of Baguio City in 1864. Renewed interest in gold by the turn of this century was marked by the brief |  | Braxton, D. P., Cooke, D. R., Ignacio, A. M., Rye, R. O., Waters, P. J. (2009) Ultra-Deep Oxidation and Exotic Copper Formation at the Late Pliocene Boyongan and Bayugo Porphyry Copper-Gold Deposits, Surigao, Philippines: Geology, Mineralogy, Paleoaltimetry, and their Implications for Geologic, Physiographic, and Tectonic Controls. Economic Geology, 104 (3) 333-349 doi:10.2113/gsecongeo.104.3.333 | Journal (article/letter/editorial) | | Boyongan and Bayugo Porphyry Copper-Gold Deposits, Surigao, Philippines: Geology, Mineralogy, Paleoaltimetry...American Exploration (Philippines) Inc. 21 Outlook Drive Baguio City, Philippines 2600 Abstract The Boyongan...porphyry copper-gold deposits are part of an emerging belt of intrusion-centered gold-rich deposits in...the Surigao district of northeast Mindanao, Philippines. Exhumation and weathering of these Late Pliocene-age...–5.7 per mil. At the latitude of the southern Philippines, this value corresponds to Pleistocene rain water |  | | Journal (article/letter/editorial) | | armed conflict: nonferrous metals mining in the Philippines WILLIAM N. HOLDEN Department of Geography/Program...rjacobso@ucalgary.ca) In recent years the government of the Philippines has attempted to accelerate the growth of the...resources by multinational corporations. The Philippines is also a nation beset by armed violence carried...non-ferreux aux Philippines Dans les dernières années, le gouvernement des Philippines a pris des mesures...multinationales à exploiter ses ressources minières. Les Philippines sont un pays rongé par la violence commis par |  | | Journal (article/letter/editorial) | | with high K calc-alkalic intrusions. The 25 largest gold-rich porphyry deposits are concentrated in the southwest...porphyritic intrusions have also produced giant gold-rich porphyries. In the last 20 m.y., the formation...copper-molybdenum and copper-gold deposits in the circum-Pacific region has been closely associated with...DEPOSITS are significant repositories of copper, gold, and molybdenum. They are most commonly discovered...deposits are characterized by low-grade copper, gold, and/or molybdenum mineralization developed within |  | | Journal (article/letter/editorial) | | Porphyry copper deposits account for 60% of the world's mine production of copper and constitute 80% of ore reserves...(Beane and Titley, 1981; Titley and Beane, 1981). Gold-rich and molybdenumrich deposits are two major groups...Bering (pers. commun., 1980), Bering (1984) Philippines 9. Dizon Silltoe and Gappe (1984); Malihan (1987)...Madamba (1972); Kerntke (1992) 10. Tirad 11. Batong-Buhay 12. Far South East 13. Atlas Papua New-Guinea...Schwartz, 1984), Tangse (van Leeuwen et al., 1987) Philippines: Marcopper (Loudon, 1976),2 Santo Nino (Bryner |  | | Journal (article/letter/editorial) | | the number of undiscovered deposits. In any given region, some fixed, but in most cases unknown, number...(Singer et al., 2005). Three control areas in the Philippines and four control areas in South America serve...Miocene ( 1) Western Philippines ( 2) Central Philippines ( 3) Eastern Philippines ( 4) Northern Sulawesi...deposit types, such as porphyry copper or placer gold, if the deposits are exposed and the area is not...divided into three subtypes: copper (Cu-Au-Mo), copper-gold (Cu-Au), and copper-molybdenum (Cu-Mo), which are |  | | Journal (article/letter/editorial) | | Emerging Porphyry District in Northeast Mindanao, Philippines* David P. Braxton,1,2,†,** David R. Cooke,1,3...American Exploration (Philippines) Inc., 21 Outlook Drive, Baguio City 2600, Philippines Abstract The Boyongan...the Surigao district of northeast Mindanao, Philippines. Since their formation in the early Pleistocene...historic Surigao Au district of the southern Philippines (Fig. 1). Recent mineral resource estimates for...systems in mind, Anglo American Exploration (Philippines) Inc. (Anglo American) targeted the Surigao Au |  | | Book | | the Philippines 254 A Message by S. S. Seguenia . 256 Mineral Production in the Philippines 257...permit, discussions of mining regions in the Philippines based from scientific reports, operation of stock...Assembly and the sign ing by the President of the Philippines of three important mining laws, to govern the...ommtrce ADORABLE-SORIANO 9 COMMONWEALTH OF THE PHILIPPINES Department of Agriculture and Commerce BUREAU...opened one of the principal resources in the Philippines and it is incumbent upon us to protect this new |  | | Report (issue) | | Availability curves Operating and capital costs Mine and mill operating costs Total production costs...developing, and explored deposits Total availability by region Annual availability U.S. availability Total production...explored deposits Total copper availability by major region Potential annual copper production from producing...deposits Potential annual copper production by major region Total copper availability from U.S. mines and deposits...26 26 27 27 27 28 TABLES 1. 2. 3. 4. 5. World mine production of copper Nimiber and status of copper |  | | Journal (issue) | | to August, 1 94 1 , in the Gold Coast. By H . E. Box. Pp. 93, 9½ x 6. (Gold Coast : Department of Agriculture...Utilisation of Virginia Tobacco Seed in the Madras Province. By R. 1942, 12, 400-408. Swami Rao and M. Naraslmbam...Progress Report on Forest Administration in the Province of Bihar for the year 1939-40. By L. R. Sabharwal...Progress Report on Forest Administration in the Province of Orissa for 1940-4 1 . Pp. 82, 10 x 7. (Cuttack...use of workers on collective farms in the Moscow region . 1 OTHER INSECTICIDE MATERIALS OF VEGETABLE ORIGIN |  | | Book (edition) | | • t --•- """"" ' The Lornex copper-molybdenum mine and plant, Highland Valley, British Columbia. (By...in specific cases such as mine levels when measured in feet, values of gold and silver in troy ounces...winter torrents brought down gravels containing gold, which the barbarians passed through inclined troughs...fleeces to catch the gold. The fleeces that were hung on trees to dry, so that the fine gold could be beaten...Euxine. This is the earliest record of a placer gold rush and a poetic expression of an early mining |  | | Journal (issue) | | 271. ‘ 2 Min.-34 ; ENGINEERING WORKS, 4034 Mine & Smelter Supply Co. Denver 17, Colo. 8 a oO ... - aa in 1950 . The article “Round Mountain Gold” which appeared in the June 1950 issue of Minrinc...pu AUGUST, VOL. is semi-monthly , : ain ie Gold” ae as the No. LOCATIONS 11 y 12 16 19 20...Mining Con pany, Limited’s, Bomi Hills iron ore mine over th newly constructed railroad from Monrovia... At government request, machinery scheduled for gold mining (largely in South Africa) is being voluntarily |  | | Book | | MODELS IN EXPLORATION GEOCHEMISTRY The Canadian Cordillera and Canadian Shield 3. GJ.S. GOVETTandM.H. GOVETT... Use of these steam engines for motive power on mine railroads in 1828 was so successful that railroads...Coal, the most abundant fuel, is getting harder to mine. The way it is practiced today, coal mining is hazardous...discontinuity to 8 km/s below it. The REGION OF MELTING REGION OF SOLID MANTLE MATERIAL 200 300 DEPTH...Conrad discontinuity varies considerably from region to region, being estimated to be from one third to two |  | | Report (issue) | | national resource positions for copper, lead, zinc, gold, and silver was conducted about 1954 with the classification...universities for supplemental evaluations of aluminum, gold, lead, silver, titanium, tungsten, uranium, vanadium...holdings. Prior to 1978, the development of complete mine property cost evaluations was impeded by still evolving...tool. Systems design work also continued on the mine simulation (MINSIM) program, an economic evaluation...Asbestos Barite Beryllium Chromium Cobalt Fluorspar Gold Graphite Iron Lead Lithium Magnesium Columbium |
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