| 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) | Pliocene Boyongan and Bayugo Porphyry Copper-Gold Deposits, Surigao, Philippines: Geology, Mineralogy...American Exploration (Philippines) Inc. 21 Outlook Drive Baguio City, Philippines 2600 Abstract The Boyongan...Boyongan and Bayugo porphyry copper-gold deposits are part of an emerging belt of intrusion-centered gold-rich...gold-rich deposits in the Surigao district of northeast Mindanao, Philippines. Exhumation and weathering...modest (30–70 m) oxidation profile at adjacent Bayugo. Debris flows, volcanic rocks, and fluviolacustrine | | | Journal (article/letter/editorial) | Environment: A Case Study of the Bayugo Porphyry Copper-Gold Deposit, Southern Philippines DAVID BRAXTON1,†,* AND...the supergene profile of the Bayugo porphyry copper-gold deposit (Philippines) show significant isotopic...samples of supergene sulfides (chalcocite and djurleite) collected from the exotic and enriched copper...hydrogeologic regime and ultimately begins to deposit copper as the controls of solubility (redox, pH...fluids moving downgradient through an exotic copper deposit. Such differences could potentially provide an |
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