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Mineralogy and Petrology

, Volume 36, Issue 3–4, pp 219–239 | Cite as

Mineralogy and microstructures of carbonaceous gold ores

  • G. C. Wilson
  • J. C. Rucklidge
Article

Summary

This paper describes mineralogical and geological aspects of the Owl Creek and Hoyle Pond gold mines, located in Archean metasediments and metavolcanics in the Abitibi greenstone belt in northern Ontario, Canada. The occurrence of “invisible gold” of Cenozoic age, hosted in structurally-controlled settings in Paleozoic strata of the southwestern U.S.A., has been known and exploited for over thirty years. Petrographic observations are combined with electron microprobe data in order to describe aspects of gold mineralization from these Ontario mines and from selected analogous sites elsewhere. Details of selected exposures of Archean-Proterozoic lithologies, which are carbonaceous but not strongly enriched in gold, are briefly compared with features of the mine geology. Although no mine generates carbonaceous ores alone, the proportion of such ores varies widely from mine to mine, and district to district. Questions remain, particularly with regard to the chemical behaviour of the reduced carbon, but two common factors of prime economic relevance are established. These are the importance of (a) fluid focusing through incompetent carbonaceous units, and (b) localization of high (commonly visible) gold values on vein-wallrock contacts.

Keywords

Pyrite Chlorite Tourmaline Greenstone Belt Petrographic Observation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

La Minéralogie et micro-structures des minerais carbonifères d'or

Résumé

Ce compte rendu s'intéresse au gîtes carbonifères d'or, spécialement dans la ceinture de roches vertes de l'Abitibi au nord de l'Ontario, au Canada. Des observations pétrographiques sont combinées avec des analyses de microsonde électronique afin de décrire quelques aspects de la minéralogie et de la géologie des mines d'or; en particulier Owl Creek et Hoyle Pond, et aussi des emplacements dont la concentration en or est trop faible pour être exploité. Trois générations de pyrite sont observée à Owl Creek, la troisième contenant de l'or. Souvent l'or est situé entre la veine de quartz et l'encaissante carbonifère, fréquemment avec de l'hydromicas sodiques, de la chlorite ferrifère et de la tourmaline. Cette association dont l'importance économique est substantielle, est produite par la concentration de fluides hydrothermales à travers des rocs carbonifères friables.

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References

  1. Akright RL, Radtke AS, Grimes DJ (1969) Minor elements as guides to gold in the Roberts Mountains Formation, Carlin gold mine, Eureka County, Nevada. Quarterly of the Colorado School of Mines 64, no 1, 49–66Google Scholar
  2. Arengi JT (1977) Sedimentary evolution of the Sudbury Basin, Ontario. MSc Thesis, University of Toronto, 141 pp (unpubl)Google Scholar
  3. Auger PE (1941) Zoning and district variations of the minor elements in pyrite of Canadian gold deposits. Econ Geol 36: 401–423Google Scholar
  4. Austin MA (1986) Topographic control of facies in the Proterozoic carbon leader placer. Geocongress 1986, Extended Abstracts Vol, Johannesburg, pp 437–440Google Scholar
  5. Bagby WC, Berger BR (1985) Geologic characteristics of sediment-hosted, disseminated precious-metal deposits in the western United States. In:Berger BR, Bethke PM (eds) Geology and Geochemistry of Epithermal Systems. Rev Econ Geol 2: 168–202Google Scholar
  6. Baker JW, Geological Staff (1957) Kerr-Addison Mine. In:Gilbert G (ed) Structural geology of Canadian ore deposits. Can Inst Min Metall: 392–402Google Scholar
  7. Ballantyne JM, Moore JN, Adams MC (1985) Arsenic geochemistry in geothermal systems. Geol Soc Amer Abs w Progs 17 no 7: 518Google Scholar
  8. Barrientos X, Selverstone J, Munoz J (1986) Coexisting muscovite and paragonite: the solvus revisited. Geol Soc Amer Abs w Progs 18 no 6: 535Google Scholar
  9. Barton PB (1969) Thermochemical study of the system Fe-As-S. Geochim Cosmochim Acta 33: 841–857Google Scholar
  10. Beutner EC (1978) Slaty cleavage and related strain in Martinsburg Slate, Delaware Water Gap, New Jersey. Am J Sci 278: 1–23Google Scholar
  11. Birak DJ (1986) Exploration and geologic development of the Jerritt Canyon gold deposits, Elko County, Nevada, U.S.A. In:Macdonald AJ (ed) Proc “Gold '86” Symposium, Toronto 488–496Google Scholar
  12. Botrell SH, Shepherd TJ, Yardley BWD (1986) Fluid rock interaction and controls on ore genesis in the Dolgellau gold belt, North Wales. Abstracts Vol, Fifth Internat Symposium on Water-Rock Interaction, Reykjavik, 69–72Google Scholar
  13. Brammall A, Leech JGC, Bannister FA (1937) The paragenesis of cookeite and hydromuscovite associated with gold at Ogofau, Carmarthenshire. Min Mag 24: 507–520Google Scholar
  14. Burgers F du P, Fynn RD (1986) The geology of West Driefontein. Geocongress '86, Extended Abstracts Vol, Johannesburg, pp 943–946Google Scholar
  15. Clark LA (1960) The Fe-As-S system: phase relations and applications. Econ Geol 55: 1345–1381Google Scholar
  16. Coad PR (1976) The Potter Mine, Ontario. MSc Thesis, University of Toronto, 239 pp (unpubl)Google Scholar
  17. Coad PR, Labine RJ, Caron D (1986) Owl Creek Mine. In:Pirie J, Downes MJ (eds) Gold'86 excursion guidebook. Toronto, pp 34–36Google Scholar
  18. Colvine AC, Andrews AJ, Cherry ME, Durocher ME, Fyon AJ, Lavigne MJ, Macdonald AJ, Marmont S, Poulsen KH, Springer JS, Troop DG (1984) An integrated model for the origin of Archean lode gold deposits. Ontario Geological Survey Open File Report 5524, 98 ppGoogle Scholar
  19. Condie KC (1976) Trace-element geochemistry of Archean greenstone belts. Earth-Science Reviews 12: 393–117Google Scholar
  20. Cox SF, Etheridge MA, Hobbs BE (1981) The experimental ductile deformation of polycrystalline and single crystal pyrite. Econ Geol 76: 2105–2117Google Scholar
  21. Deer WA, Howie RA, Zussman J (1962) Rock-forming minerals, vol 3. Sheet Silicates. Longman, London, 270 ppGoogle Scholar
  22. Deer WA, Howie RA, Zussman J (1966) An introduction to the rock-forming minerals. Longman, London, 528 ppGoogle Scholar
  23. Downes MJ, Hodges DJ, Derweduwen J (1984) A free carbon- and carbonate-bearing alteration zone associated with the Hoyle Pond gold occurrence, Ontario, Canada. In:Foster RP (ed) Gold '82: The geology, geochemistry and genesis of gold deposits. A. A. Balkema, Rotterdam, pp 435–448Google Scholar
  24. Ellis MA (1986) The determination of progressive deformation histories from antitaxial,syntectonic crystal fibres. J Struct Geol 8: 701–709Google Scholar
  25. Ferguson SA and associated geologists (1968) Geology and ore deposits of Tisdale Township. Ontario Department of Mines Geol Rep 58: 177 ppGoogle Scholar
  26. Frater KM (1985) Mineralization at the Golden Grove Cu-Zn deposit, Western Australia. I: Premetamorphic textures of the opaque minerals. Can J Earth Sci 22: 1–14Google Scholar
  27. Fyon JA, Crocket JH (1983) Gold exploration in the Timmins area using field and lithogeochemical characteristics of carbonate alteration zones. Ontario Geological Survey Study 26, 56 ppGoogle Scholar
  28. Heald MT (1959) Significance of stylolites in permeable sandstones. J Sed Petrol 29: 251–253Google Scholar
  29. Hobbs BE, Means WD, Williams PF (1976) An outline of structural geology. Wiley, 571 ppGoogle Scholar
  30. Horscroft FD (1986) The occurrence of gold in quartz-pebble conglomerate at Jacobina, Bahia, Brazil. Geocongress '86, Extended Abstracts Vol, Johannesburg, pp 259–262Google Scholar
  31. Hugon H (1986) Role of shearing in gold deposition. In:Chater AM (ed) Poster Vol, Gold '86 Symposium Abstracts. Toronto, pp 72–74Google Scholar
  32. Hugon H, Schwerdtner WM (1984) Structural signature and tectonic history of deformed gold-bearing rocks in Northwestern Ontario. Ontario Geological Survey Miscellaneous Paper 121: 164–176Google Scholar
  33. Ilchik RP, Brimhall GH, Schull HW (1986) Hydrothermal maturation of indigenous organic matter at the Alligator Ridge gold deposits, Nevada. Econ Geol 81: 113–130Google Scholar
  34. Joralemon P (1951) The occurrence of gold at the Getchell Mine, Nevada. Econ Geol 46: 267–310Google Scholar
  35. Kuehn CA, Rose AW (1986) Temporal framework for the evolution of fluids at the Carlin gold mine, Eureka County, Nevada. Geol Soc Amer Abs w Progs 18 no 6: 663Google Scholar
  36. Landrus CA, Ikramuddin M (1986) Rare earth element geochemistry of volcanic hosted epithermal gold deposits. Geol Soc Amer Abs w Progs 18 no 6: 665–666, 99th Annual Meeting, San AntonioGoogle Scholar
  37. Love LG, Amstutz GC (1966) Review of microscopic pyrite. Fortsch Mineralog 43: 273–309Google Scholar
  38. McKinstry H (1963) Mineral assemblages in sulfide ores: the system Cu-Fe-As-S. Econ Geol 58: 483–505Google Scholar
  39. Melling DR, Watkinson DH, Poulsen KH, Chorlton LB (1985) The geological setting and genesis of the Cameron Lake gold deposit. Ontario Geological Survey Miscellaneous Paper 127: 136–150Google Scholar
  40. Michard A, Albarede F (1986) The REE content of some hydrothermal fluids. Chem Geol 55: 51–60Google Scholar
  41. Mosier DL, Menzie WD, Kleinhampl FJ (1986) Geologic and grade-tonnage information on Tertiary epithermal precious- and base-material vein districts associated with volcanic rocks. U.S. Geol Surv Bull 1666, 39 ppGoogle Scholar
  42. Olsen PE (1985) Distribution of organic-matter-rich lacustrine rocks in the early Mesozoic Newark Supergroup. In:Robinson GR, Froelich AJ (eds) Proceedings of the 2nd United States Geological Survey Workshop on the Early Mesozoic Basins of the Eastern United States. US Geol Surv Circular 946: 61–64Google Scholar
  43. Paterson CJ, Norby JW (1986) A gold deposit associated with amphibolite and graphitic metasediments, Tinton, Black Hills: comparison with Owl Creek and Hoyle Pond deposits, Ontario. Geol Soc Amer Abs w Progs 18 no 6: 715Google Scholar
  44. Pattison ET Sauerbrei JA, Hannila JJ, Church JF (1986) Gold mineralization in the Casa Berardi area, Quebec, Canada. In:Macdonald AJ (ed) Proc Gold '86 Symposium, Toronto, pp 170–183Google Scholar
  45. Plumlee GS, Rye RO (1986) Extreme sulfur isotope, As, Sb and Ag variations in late-stage botryoidal pyrite from Creede, Colorado: vestiges of a waning hydrothermal system. Geol Soc Amer Abs w Progs 18 no 6: 719Google Scholar
  46. Pyke DR (1982) Geology of the Timmins area, district of Cochrane. Ontario Geological Survey Report 219, 141 ppGoogle Scholar
  47. Radtke AS (1985) Geology of the Carlin gold deposit, Nevada. US Geol Surv Professional Paper 1267, 124 pp, plus map folderGoogle Scholar
  48. Ramdohr P (1980) The ore minerals and their intergrowths. Fourth edition, 2nd Engl transl, Pergamon, 2 vols, 1205 ppGoogle Scholar
  49. Ramsay JG, Huber MI (1983) The techniques of modern structural geology, vol 1: Strain analysis. Academic Press, 307 ppGoogle Scholar
  50. Rosenberg PE (1967) Subsolidus relations in the system CaCO3-MgCO3-FeCO3 between 350 C and 550 C. Amer Mineral 52: 787–796Google Scholar
  51. Rucklidge JC, Wilson GC, Stumpfl EF, Ballhaus CG (1985) Analysis of Pt-associated graphite by accelerator mass spectrometry. Can Mineral 23: 313–314Google Scholar
  52. Russell N, Polanco J, Kesler SE (1986) Geology of the Monte Negro gold-silver deposit, Pueblo Viejo district, Dominican Republic. In:Macdonald AJ (ed) Proc Gold '86 Symposium. Toronto, pp 497–503Google Scholar
  53. Rytuba JJ (1985) Geochemistry of hydrothermal transport and deposition of gold and sulfide minerals in Carlin-type gold deposits. In:Tooker EW (ed) Geologic characteristics of sediment- and volcanic-hosted disseminated gold deposits-search for an occurrence model. US Geol Surv Bulletin 1646: 27–34Google Scholar
  54. Smith TJ, Kesler SE (1985) Relation of fluid inclusion geochemistry to wallrock alteration and lithogeochemical zonation at the Hollinger-McIntyre gold deposit, Timmins, Ontario, Canada. Can Institut Min Metallurgy Bull 78, no 876: 35–46Google Scholar
  55. Springer JS (1983) Invisible gold. In:Colvine AC (ed) The geology of gold in Ontario. Ontario Geological Survey Miscellaneous Paper 110: 240–250Google Scholar
  56. Springer JS (1984 a) Active carbon in Archean rocks and its effect on gold concentration. Geol Assoc Can/Mineral Assoc Can Prog w Abs 9: 107Google Scholar
  57. Springer JS (1984 b) Enrichment of gold by sulphides and carbon in Archean gold ores of Ontario. Geol Soc Amer Abs w Progs 16: 665Google Scholar
  58. Springer JS (1985) Carbon in Archean rocks of the Abitibi belt (Ontario-Quebec) and its relation to gold distribution. Can J Earth Sci 22: 1945–1951Google Scholar
  59. Volborth A, Housley RM (1984) A preliminary description of complex graphite, sulfide, arsenide, and platinum-group element mineralization in a pegmatoid pyroxenite of the Stillwater complex, Montana, USA. Tschermaks Min Pet Mitt 33: 213–230Google Scholar
  60. Weissberg BG (1965) Getchellite, AsSbS3, a new mineral from Humboldt County, Nevada. Amer Mineral 50: 1817–1826Google Scholar
  61. Wells JD, Mullens TE (1973) Gold-bearing arsenian pyrite determined by microprobe analysis, Cortez and Carlin gold mines, Nevada. Econ Geol 68: 187–201Google Scholar
  62. Whitehead RED, Davies JF, Cameron RA, Duff D (1981) Carbonate, alkali and arsenic anomalies associated with gold mineralization, Timmins area. Ontario Geological Survey Miscellaneous Paper 98: 318–333Google Scholar
  63. Williams PJ (1986) Recognition of phyllosilicate-rich tectonites from shear zones with examples from Northwest Scotland. In:Chater AM (ed) Poster Volume, Gold '86 Symposium Abstracts. Toronto, pp 174–175Google Scholar
  64. Wilson GC (1986) A petrographic study of carbonaceous rocks in gold deposits. Geol Assoc Can/Mineral Assoc Can Prog w Abs 11: 145Google Scholar
  65. Wilson GC, Rucklidge JC (1984) Mass spectrometric studies of carbonaceous materials from Archean gold deposits. Geol Soc Amer Abs w Progs 16: 696Google Scholar
  66. Wilson GC, Rucklidge JC (1986 a) Petrographic, microprobe and geochemical studies of carbonaceous rocks in gold deposits. In:Chater AM (ed) Poster Vol, Gold '86 Symposium Abstracts. Toronto, pp 178–179Google Scholar
  67. Wilson GC, Rucklidge JC (1986b) Lithological features and economic significance of reduced carbonaceous rocks in gold deposits. Ontario Geological Survey Miscellaneous Paper 130: 177–189Google Scholar
  68. Wood PC, Burrows DR, Thomas AV, Spooner ETC (1986) The Hollinger-McIntyre Auquartz vein system, Timmins, Ontario, Canada; geologic characteristics, fluid properties and light stable isotope geochemistry. In:Macdonald AJ (ed) Proc Gold'86 Symposium, Toronto, pp 56–80Google Scholar
  69. Zumberge JE, Sigleo AC, Nagy B (1978) Molecular and elemental analyses of the carboniferous matter in the gold and uranium bearing Vaal Reef carbon seams, Witwatersrand sequence. Minerals Sci Eng 10: 223–246Google Scholar

Copyright information

© Springer-Verlag 1987

Authors and Affiliations

  • G. C. Wilson
    • 1
  • J. C. Rucklidge
    • 1
  1. 1.IsoTrace LaboratoryUniversity of TorontoTorontoCanada

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