Epithermal Gold mineralization, Acupan, Baguio District, Philippines: Geology, mineralization, alteration, and the thermochemical environment of ore deposition

Economic Geology

Volumn 91, Issue 2, 1996, Pages 243-272

  Cooke, David R ^a,b   Mcphail, Derry G ^a   Bloom, Mark S ^a,c  

^a MONASH UNIVERSITY   (Australia)

^b UNIVERSITY OF TASMANIA   (Australia)

^c EXPONENT INC   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

ADULARIA; EPITHERMAL MINERALIZATION; GOLD; ORE FORMATION; SERICITE;

PHILIPPINES;

EID: 0030499242     PISSN: 03610128     EISSN: None     Source Type: Journal    
DOI: 10.2113/gsecongeo.91.2.243     Document Type: Article

References (70)

1. Afifi, A.M., Kelly, W.C., and Essene, E.J., 1988, Phase relations among tellurides, Sulfides, and oxides: II. Applications to tellu ride-bearing ore deposits: ECONOMIC GEOLOGY, v. 83, p. 395-404.
2. Ahmad, M., Solomon, M., and Walshe, J.L., 1987, Mineralogical and geochemical studies of the Emperor gold telluride deposit: ECONOMIC GEOLOGY, v. 82, p. 345-370.
3. Aoki, M., Comsti, E.C., Lazo, F.B., and Matsuhisha, Y, 1993, Advanced argillic alteration and geochemistry of alunite in an evolving hydrothermal system at Baguio, northern Luzon, Philippines: Resource Geology, v. 43, p. 155-164.
4. Balce, G.R., Encina, R.Y., Momongan, A., and Lara, E., 1980, Geology of the Baguio district and its implication on the tectonic development of the Luzon Central Cordillera: Geology and Palaeontology of Southeast Asia, v. 21, p. 265-287.
5. Barton, P.B., and Skinner, B.J., 1979, Sulfide mineral stability: in Barnes, H.L., ed., Geochemistry of hydrothermal ore deposits, 2nd ed.: New York, Wiley and Sons, p. 278-403.
6. Barton, P.B., Jr., Bethke, P.M., and Roedder, E., 1977, Environment of ore deposition in the Creede mining district, San Juan mountains, Colorado: Part III. Progress toward interpretation of the chemistry of the ore-forming fluid for the OH vein: ECONOMIC GEOLOGY, v. 72, p. 1-24.
7. 2: Journal of Petrology, v. 29, p. 445-522.
8. Berndt, M.E., Buttram, T., Earley III, D., and Seyfried, W.E., Jr., 1994, The stability of gold polysulfide complexes in aqueous sulfide solutions: 100 to 150°C and 100 bars: Geochimica et Cosmochimica Acta, v. 58, p. 587-594.
9. Bird, D.K., and Norton, D.L., 1981, Theoretical prediction of phase relations among aqueous solutions and minerals: Salton Sea geothermal system: Geochimica et Cosmochimica Acta, v. 45, p. 1479-1493.
10. Browne, P.R.L., 1978, Hydrothermal alteration in active geothermal fields: Annual Review of Earth and Planetary Sciences, v. 6, p. 229-250.
11. Browne, P.R.L., and Ellis, A.J., 1970, The Ohaaki-Broadlands hydrothermal area, New Zealand: Mineralogy and related geochemistry: American Journal of Science, v. 269, p. 97-131
12. Callow, K.J., and Worley, B.W., Jr., 1965, The occurrence of telluride minerals at the Acupan gold mine, Mountain province, Philippines: ECONOMIC GEOLOGY, v. 60, p. 251-268.
13. Cardwell, R.K., Isacks, B.L., and Karig, D.E., 1980, The spatial distribution of earthquakes, focal mechanism solutions, and subducted lithosphere in the Philippine and northeastern Indonesian islands: Geophysical Monograph Series, v. 23, p. 1-35.
14. Casadevall, T., and Ohmoto, H., 1977, Sunnyside mine, Eureka mining district, San Juan County, Colarado: Geochemistry of gold and base metal ore deposition in a volcanic environment: ECONOMIC GEOLOGY, v. 72, p. 1285-1320.
15. Comsti, M.E.G., Villones, R.I., de Jesus, C.V., Natividad, A.R., Rollan, L.A., and Duroy, A.C., 1990, Mineralisation at the Kelly gold mine, Bagnio district, Philippines: Fluid-inclusion and wall-rock alteration studies: Journal of Geochemical Exploration, v. 35, p. 297-340.
16. Cooke, D.R., 1990, The development of epithermal gold and porphyry copper-style mineralisation within an intrusive centre: Acupan, Baguio district, Philippines: Australasian Institute of Mining and Metallurgy Pacific Rim Congress 90, Gold Coast, May 1990, Proceedings, v. 3, p. 521-528.
17. _1991, Styles and controls of mineralization, Acupan gold mine, Baguio district, Philippines: Unpublished Ph.D. dissertation, Melbourne, Victoria. Australia, Monash University, 396 p.
18. Cooke, D.R. and Bloom, M.S., 1990, Epithermal and subjacent porphyry mineralization, Acupan, Baguio district, Philippines: A fluid-inclusion and paragenetic study: Journal of Geochemical Exploration, v. 35, p. 297-340.
19. de Guzman, M.T., 1986, Geology and mineralization of the Balatoc diatreme, Acupan mine, Benguet: Baguio, Benguet Consolidated Inc., Unpublished report, 66 p.
20. Drummond, S.E., and Ohmoto, H., 1985, Chemical evolution and mineral deposition in boiling hydrothermal systems: ECONOMIC GEOLOGY, v. 80, p. 126-147.
21. Ellis, A.J., 1979, Explored geothermal systems, in Barnes, H.L., ed., Geochemistry of hydrothermal ore deposits, 2nd ed.: New York, J. Wiley and Sons, p. 278-403.
22. Fernandez, H.E., and Damasco, F.V., 1979, Gold deposition in the Baguio district and its relationship to regional geology: ECONOMIC GEOLOGY, v. 74, p. 1852-1868.
23. Gammons, C.H., 1988, Studies in hydrothermal phenomena: (1) the solubility of silver sulfide in aqueous sulfide solutions to 300°C, (2) a paragenesis and fluid inclusion study of polymetallic vein mineralization in the Big Creek mining district, Central Idaho: Unpublished Ph.D. dissertation, Pennsylvania State University, 337 p.
24. 2S in near-neutral aqueous sulfide solutions at 25 to 300°C; Geochimica et Cosmochimica Acta, v. 53, p. 279-290.
25. Geller, B.A., and Atkinson, W.W.J., 1991, Paragenetic sequence of telluride and related mineral stages in the Boulder County telluride belt, Colorado [abs.]: Geological Society of America Abstracts with Programs, v. 23, no. 5, p. 417.
26. Giggenbach, W.F., 1981, Geothermal mineral equilibria: Geochimica et Cosmochimica Acta, v. 45, p. 393-410.
27. Heald, P., Foley, N., and Hayba, D., 1987, Comparative anatomy of volcanic-hosted epithermal deposits: Acid sulfate and adularia-sericite types: ECONOMIC GEOLOGY, v. 82, p. 1-26.
28. Hedenquist, J.W., 1992, Recognition of magmatic contributions to active and extinct hydrothermal systems: Japan Geological Survey Report, v. 279, p. 68-79.
29. Hedenqnist, J.W., and Henley, R.W., 1985, Hydrothermal eruptions in the Waiotapu geothermal system, New Zealand: Their origin, associated breccias, and relation to precious metal mineralization: ECONOMIC GEOLOGY, v. 80, p. 1640-1668.
30. Hedenquist, J.W., and Houghton, B.F., 1987, Epithermal gold mineralization and its volcanic environments: Sydney, University of Sydney, Earth Resources Foundation, 422 p.
31. Helgeson, H.C., 1969, Thermodynamics of hydrothermal systems at elevated temperatures and pressures: American Journal of Science, v. 267, p. 729-804.
32. Henley, R.W., 1973, Solubility of gold in hydrothermal chloride solutions: Chemical Geology, v. 11, p. 73-87.
33. _1984a, Chemical structure of geothermal systems: Reviews in Economic Geology, v. 1, p. 9-28.
34. _1984b, Hydrolysis reactions in hydrothermal fluids: Reviews in Economic Geology, v. 1, p. 65-82.
35. Henley, R.W., 1990, Ore transport and deposition in epithermal environments, in Herbert, H.K., and Ho, S.E., eds., Stable isotopes and fluid processes in mineralisation: Geology Department and University Extension, University of Western Australia, no. 23, p. 51-69.
36. Henley, R.W., and Ellis, A.J., 1983, Geothermal systems ancient and modern: A geochemical review: Earth Science Reviews, v. 19, p. 1-50.
37. 2S-bearing aqueous solutions at 250-350°C: Geochimica et Cosmochimica Acta, v. 55, p. 2111-2126.
38. Japan International Cooperation Agency, 1983, Report on Acupan-Itogon geothermal development. First phase survey: Tokyo, Unpublished report, 94 p.
39. _1984, Report on Acupan-Itogon geothermal development. Second phase survey: Tokyo, Unpublished report, 123 p.
40. Johnson, J.W., Oelkers, E.H., and Helgeson, H.C., 1992, SUPCRT92: A software package for calculating the standard molal thermodynamic properties of minerals, gases, aqueous species and reactions from 1 to 5000 bars and 0° to 1000°C: Computers and Geosciences, v. 18, p. 899-947.
41. Knittel, U., and Defaut, M.J., 1988, Sr isotopic and trace element variations in Oligocene to Recent igneous rocks from the Philippine Island arc: Evidence for Recent enrichment in the sub-Philippine mantle: Earth and Planetary Science Letters, v. 87, p. 97-99.
42. Krupp, R.E., and Seward, T.M., 1987, The Rotokawa geothermal system, New Zealand: An active epithermal gold-depositing environment: ECONOMIC GEOLOGY, v. 82, p. 1109-1129.
43. Large, R.R., 1977, Chemical evolution and zonation of massive sulfide deposits in volcanic terrains: ECONOMIC GEOLOGY, v. 72, p. 549-572.
44. Lewis, S.D., and Hayes, D.E., 1983, A geophysical study of the Manila trench, Luzon, Philippines - 2. Forearc basin structural and stratigraphic evolution: Journal of Geophysical Research, v. 89, p. 9196-9214.
45. Maleterre, P., Stephan, J.F., Andreieff, P., Bellon, H., Chorowicz, J., Boirat, J.M., and Balce, G.R., 1988, The southern Central Cordillera of Luzon: A multistage Upper Eocene to Pleistocene arc deformed on the northern end of the Philippine strike-slip fault [abs.]: Geodynamic Evolution of Eastern Eurasian Margin, Paris, 1988, Abstracts, p. 81.
46. McPhail, D.C., 1995, Thermodynamic properties of aqueous tellurium species between 25°C and 350°C: Geochimica et Cosmochimica Acta, v. 59. p. 851-866.
47. Mills, K.C., 1974, Thennodynamic data for inorganic sulphides, selenides and tellurides: London, Butterworths, 845 p.
48. Mitchell, A.H.G., and Balce, G.R., 1990, Geological features of some epithermal gold systems, Philippines, in Hedenquist, J.W., White, N.C., and Siddeley, G., eds., Epithennal gold mineralization of the Circum-Pacific: Geology, geochemistry; origin mid exploration, I: Journal of Geochemical Exploration, v. 35, p. 241-296.
49. Mitchell, A.H.G., and Leach, T.M., 1991, Epithennal gold in the Philippines: Island arc metallogenesis, geochemical systems and geology: London, Academic Press, 457 p.
50. Reed, M.H., and Spycher, N.F., 1985, Boiling, cooling and oxidation in epithermal systems: A numerical approach: Reviews in Economic Geology, v. 2, p. 249-272.
51. Robie, R.A., and Waldbaum, D.R., 1968, Thermodynamic properties of minerals and related substances at 298.15 K (25°C) and one atmosphere (1.013 bars) pressure and at higher temperatures: U.S. Geological Survey Bulletin, v. 1259, 256 p.
52. Sander, M.V., and Black, J.E., 1988, Crystallization and recrystallization of growth-zoned vein quartz crystals from epithermal systems - implications for fluid inclusion studies: ECONOMIC GEOLOGY, v. 83, p. 1052-1060.
53. Sander, M.V., and Einaudi, M.T., 1990, Epithermal deposition of gold during transition from propylitic to potassic alteration at Round Mountain, Nevada: ECONOMIC GEOLOGY, v. 85, p. 285-311.
54. Saunders, J.A., and May, E.R., 1986, Bessie G: A high-grade epithermal gold telluride deposit, La Plata County, Colorado, USA, in Macdonald, A.J., ed., Gold '86: Willowdale, Ontario, Konsult International, p. 436-444.
55. Sawkins, F.J., O'Neill, J.R., and Thompson, J.M., 1979, Fluid inclusion and geochemical studies of vein gold deposits, Baguio district, Philippines: ECONOMIC GEOLOGY, v. 74, p. 1420-1434.
56. Scott, S.D., and Barnes, H.L., 1971, Sphalerite geothermometry and geobarometry: ECONOMIC GEOLOGY, v. 66, p. 653-669.
57. Seward, T.M., 1984, The transport and deposition of gold in hydrothermal systems, in Foster, R.P., ed., Gold 82: Amsterdam, A.A. Balkema, p. 165-181.
58. _1989, The hydrothermal chemistry of gold and its implications for ore formation: Boiling and conductive cooling as examples: ECONOMIC GEOLOGY MONOGRAPH, v. 6, p. 398-404.
59. _1991, The hydrothermal geochemistry of gold, in Foster, R.P., ed., Gold metallogeny and exploration: London, Blackie and Son Ltd., p. 37-62.
60. Shannon, J.R., 1979, Igneous petrology, geochemistry and fission track ages of a portion of the Baguio mineral district, northern Luzon, Philippines: Unpublished M.Sc. thesis, Golden, Colorado, Colorado School of Mines, 173 p.
61. Shelton, K.L., So, C., Haeussler, G.T., Chi, S., and Lee, K., 1990, Geochemical studies of the Tongyoung gold-silver deposits, Republic of Korea: Evidence of meteoric water dominance in a Te-bearing epithermal system: ECONOMIC GEOLOGY, v. 85, p. 1114-1132.
62. Sillitoe, R.H., and Gappe, I.M., 1984, Philippine porphyry copper deposits: Geologic setting and characteristics: United Nations Development Programme, Committee for Co-ordination of Joint Prospecting for Mineral Resources in Asian Offshore Areas (CCOP), Technical publication, no. 14, 89 p.
63. Simmons, S.F., Sawkins, F.J., and Schlutter, D.J., 1987, Mantle-derived helium in two Peruvian hydrothermal ore deposits: Nature, v. 329, p. 429-432.
64. Solomon, M., 1990, Subduction, arc reversal, and the origin of porphyry copper-gold deposits in island arcs: Geology, v. 18, p. 630-633.
65. Spycher, N.F., and Reed, M.H., 1989, Evolution of a Broadlands-type epithermal ore fluid along alternative P-T paths: Implications for the transport and deposition of base, precious and volatile metals: ECONOMIC GEOLOGY, v. 84, p. 328-359.
66. United Nations Development Programme, 1987, Geology and mineralization in the Baguio area, northern Luzon: Unpublished report 5, 82 p.
67. White, N.C., and Hedenquist, J.W., 1990, Epithermal environments and styles of mineralization: Variations and their causes, and guidelines for exploration: Journal of Geochemical Exploration, v. 36, p. 445-474.
68. Worley, B.W., Jr., 1967, Gold mines of Benguet Consolidated, Inc.: Mineral Engineering Magazine, v. 18, no. 4, p. 12-22.
69. Zhang, X., and Spry, P.G., 1991, Petrological, mineralogical, fluid inclusion and stable isotope studies of the Gies gold-silver telluride deposit, Judith Mountains, Montana: ECONOMIC GEOLOGY, v. 89, p. 602-627.
70. 2O system at 450°C and 500 Atm: Geochemistry International, v. 26, p. 66-75.