 | 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) | | Bayugo Porphyry Copper-Gold Deposits, Surigao, Philippines: Geology, Mineralogy, Paleoaltimetry, and their...American Exploration (Philippines) Inc. 21 Outlook Drive Baguio City, Philippines 2600 Abstract The Boyongan...the Surigao district of northeast Mindanao, Philippines. Exhumation and weathering of these Late Pliocene-age...supergene copper oxide minerals (malachite + azurite + cuprite) to deeper sulfide-stable assemblages (chalcocite...–5.7 per mil. At the latitude of the southern Philippines, this value corresponds to Pleistocene rain water |  | | Journal (article/letter/editorial) | | Bayugo Porphyry Copper-Gold Deposit, Southern Philippines DAVID BRAXTON1,†,* AND RYAN MATHUR2 1 Anglo ...of the Bayugo porphyry copper-gold deposit (Philippines) show significant isotopic fractionation relative...Boyongan-Bayugo porphyry copper-gold district, Philippines. We examine the copper isotope geochemistry to...crust beneath the Philippines (Fig. 1, inset). To the west, collision of the Philippines with the Eurasia...respectively. East of the central and southern Philippines, the Philippine Sea plate is undergoing subduction |  | | Report (issue) | | along convergent plate-margin boundaries or in island-arc environments. The deposits are associated with...Clark and others, 2007). In the thermal infrared region, quartz and hydrous silica contain emission minima...assemblage might include malachite + azurite + cuprite + chrysocolla, with minor amounts of other minerals...likely derived from more mafic mantle magmas. In island-arc settings, the crust is thinner and the host...the magma is largely inherited from the source region (Carmichael, 1991). Other parameters, such as magma |  | | Book | | Chromite Cinnabar Cobaltite Copper Covellite Cubanite Cuprite Enargite Galena Goethite Gold Graphite Hematite...Proustite Pyrargyrite Stannite Marcasite Niccolite Cuprite Cinnabar (in comparison with adjacent minerals...Pyrolusite Green Bismuthinite Marcasite Cinnabar Cuprite Blue Cubanite Goethite Yellow to blue Yellow to...within it. Samples which have been collected in a mine or open pit exhibit more abundant reflections as...wolframite (deep brown; more distinct in oil) Red Cuprite, proustite, pyrargyrite, goethite, sphalerite, |  | | 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... Introduction Located in the northeast of the island of Mindanao, Boyongan and Bayugo are two Cu-Au...historic Surigao Au district of the southern Philippines (Fig. 1). Recent mineral resource estimates for |  | | Book | | 61 ， The Mankayan Mineral District, .Luzon Philippines. Artemio F Disini, Bruce M Robertson and Rene...Agua Rica Porphyry Cu-Mo-Au Deposit，Catamarca Province, Northwestern Argentina. Part 1 : Exploration...a deposit, but rather the engineering ability to mine on a large scale at low cost, and simultaneously...Baguio and Lepanto-Mankayan districts in the Philippines, which commenced operation in the mid 1930rs...growing in Africa, the other great copper producing region, new sources o f copper were sought. As a consequence |  | | Book | | metalliferous region has been eroded affects its present characteristics as a minera1 province, because of...sills), if they are exposed in outcrop or in the mine workings at all. The Climax Mo complex is the best...orogenic belts formed in evolutionarily primitive island arcs, e.g. in the Izu Peninsula, Japan and elsewhere;...known (e.g. the Montana Tunnels deposit, Obelisk Mine). The former locality contains disseminated pyrite...BALKHASH (PRIBALKHASH) REGION, KAZAKHSTAN, U.S.S.R. This is an outstanding region of Permo-Carboniferous |  | | Book (edition) | | • t --•- """"" ' The Lornex copper-molybdenum mine and plant, Highland Valley, British Columbia. (By...measurements have been retained in specific cases such as mine levels when measured in feet, values of gold and...developing an annual ton of new copper capacity from mine through the refinery without intrastructure costs...fold in three years. As an example, the " Surface Mine Control and Reclamation Act,' ' which was initially...resources in the future.'' In 1977, a surface coal mine regulation that greatly restricts the areas of strip |  | | Book | | metalliferous region has been eroded affects its present characteristics as a mineral province, because of...sills), if they are exposed in outcrop or in the mine workings at all. The Climax Mo complex is the best...orogenic belts formed in evolutionarily primitive island arcs, e.g. in the Izu Peninsula, Japan and elsewhere;...known (e.g. the Montana Tunnels deposit, Obelisk Mine). The former locality contains disseminated pyrite...BALKHASH (PRIBALKHASH) REGION, KAZAKHSTAN, U.S.S.R. This is an outstanding region of Permo-Carboniferous |  | | Book (edition) | | ....................... 1625 IX.1. Andaman Sea Region ................................................................................. 2003 IX.8. Philippines (General, Palawan, Luzon) ............................................... 2048 IX.9. South Philippines (Celebes Sea, Sulu Sea, Sandakan) .............2140 IX.11. Papua New Guinea (East New Guinea main island) ................................................public-domain publications listed alphabetically by region or by subject. It resumes a tradition of annotated |  | | Book | | 7285 ADC, Mia Road, Pasay City, Metro Manila, Philippines M. S. GARSON Chief Technical Adviser, UNDTCD...Zone 2 Preservation potential III Oceanic Linear Island and Seamount Chains A Tectonic Setting B Mineral...Tectonic Setting 1 Continental margin arcs 2 Oceanic island arcs 3 Ancient arcs 4 Volcanic arcs, subduction...Epithermal gold-silver of the Basin and Range Province, western USA 2 Porphyry molybdenum deposits of...Subduction-related Transforms in Continental Margins and Island Arcs A Tectonic Setting BMineral Deposits II Ridge-Ridge |  | | Book | | disseminating the information, the mine geologists and mine managers who have made the mine visits a rewarding experience...concentration required to achieve the break-even point for a mine in terms of revenue and costs. Any detailed exploration...(1955), a metallogenic province may be defined as a mineralized area or region containing mineral deposits...The size of a metallogenic province can be as large as the Superior Province (Canadian Shield) or as small...as the Upper Michigan Peninsula native copper province. Similarly, a metallogenic epoch can be as broad |
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