Geological and metallogenic environments of gold deposits of the Guiana shield: A comparative study between St-Élite (French Guiana) and Omai (Guyana)

Exploration and Mining Geology

Volumn 8, Issue 1-2, 1999, Pages 117-135

  Lafrance, Jean ^a,b   Bardoux, Marc ^a   Voicu, Gabriel ^a,c   Stevenson, Ross ^a   Machado, Nuno ^a  

^a UNIVERSITÉ DU QUÉBEC À MONTRÉAL   (Canada)

^b UNIVERSITÉ DU QUÉBEC À CHICOUTIMI   (Canada)

^c Omai Gold Mines   (Guyana)

Author keywords

[No Author keywords available]

Indexed keywords

GOLD; METALLOGENESIS; ORE DEPOSIT;

FRENCH GUIANA; GUYANA; SOUTH AMERICA;

EID: 0002794118     PISSN: 09641823     EISSN: None     Source Type: Journal    
DOI: None     Document Type: Article

References (50)

1. BARLEY, M.E. and GROVES, D.I., 1992. Supercontinent cycles and the distribution of metal deposits through time. Geology, 20, p. 291-294.
2. BERTONI, C.H., SHAW, R.P., SINGH, R., MINAMOTO, J., RICHARDS, J.M. and BELZILE, E., 1991. Geology and gold mineralisation of the Omai property, Guyana. In Brazil Gold 91, The Economics, Geology, Geochemistry and Genesis of Gold Deposits. Edited by E.A. Ladeira. Balkema, Rotterdam, p. 767-773.
3. BHATT, B.J., 1995. Geology, Geochemistry, and Origin of the Proterozoic Gold-quartz Vein Mineralization and Igneous Intrusions, Omai Gold Mine, Guyana, South America. Unpublished report, 50 p.
4. BLEVIN, P.L. and CHAPELL, B.W., 1995. Chemistry, origin, and evolution of mineralized granites in the Lachlan fold belt, Australia: The metallogeny of I- and S-type granites. Economic Geology, 90, p. 1604-1619.
5. CAEN-VACHETTE, M., 1988. Le craton ouest-africain et le bouclier guyanais : Un seul craton au Proterozoique inférieur? Journal of African Earth Sciences, 7, p. 478-488.
6. CHAMPION, D.C. and CHAPPELL, B.W., 1992. Petrogenesis of felsic I-type granites: An example from northern Queensland. Transactions of the Royal Society of Edimburgh, 83, p. 115-126.
7. CHOUBERT, B., 1952. La mine d'or de St-Élie-Adieu-Vat en Guyane Française. Écho Mines Métall. Fr., 86r. Cardinet, p. 1-20.
8. CHOUBERT, B., 1974. Le Précambrien des Guyanes. Mémoire Bureau de Recherche Géologique et Minière, 81, 213 p.
9. DePAOLO, D., 1988. Neodymium Isotope Geochemistry: An Introduction. Springer-Verlag, Heidelberg, 187 p.
10. ELLIOTT, R.G., 1992. The geology and geochemistry of the Omai goldfield, Guyana. Ph.D. thesis, Oxford Brookes University, Oxford, 230 p.
11. GEBRE-MARIAM, M., GROVES, D.I., McNAUGHTON, N.J., MIKUCKI, E.J. and VEARNCOMBE, J.R., 1993. Archean Au-Ag mineralization at Racetrack, near Kalgoorlie, Western Australia: A high crustal-level expression of the Archean lode-gold continuum. Mineralium Deposita, 28, p. 375-387.
12. GEBRE-MARIAM, M., HAGEMANN, S.G. and GROVES, D.I., 1995. A classification scheme for epigenetic Archean lode-gold deposits, Mineralium Deposita, 30, p. 408-410.
13. GIBBS, A.K. and BARRON, C.N., 1993. Geology of the Guiana Shield. Oxford Monographs on Geology and Geophysics, 22, Clarendon Press, Oxford, 246 p.
14. GREEN, T.H., 1995. Significance of Nb/Ta as an indicator of geochemical processes in the crust-mantle system. Chemical Geology, 120, p. 347-359.
15. GROVES, D.I., 1993. The crustal continuum model for late-Archean lode-gold deposits of the Yilgarn Block, Western Australia. Mineralium Deposita, 28, p. 366-374.
16. GRUAU, G., MARTIN, H., LEVEQUE, B., CAPDEVILA, R. and MAROT, A., 1985. Rb/Sr and Sm/Nd geochronology of Lower Proterozoic granite-greenstone terrains in French Guiana, South America. Precambrian Research, 30, p. 63-80.
17. GUYANOR, 1997. Unpublished company map.
18. HAGEMANN, S.G., GEBRE-MARIAM, M. and GROVES, D.I., 1994. Surface-water influx in shallow-level Archean lode-gold deposits in Western Australia. Geology, 22, p. 1067-1070.
19. HALLBAUER, D.K., and VOICU, G., 1998. A geochemical assessment of the hydrothermal systems at the Omai gold mine, Guyana, from the composition of fluid inclusions in ore minerals and gangue. Extended Abstracts, Geocongress 98. The Geological Society of South Africa, p. 213-215.
20. HAWKESWORTH, C.J., GALLAGHER, K., HERGT, J.M. and McDERMOTT, F., 1994. Destructive plate margin magmatism: Geochemistry and melt generation. Lithos, 33, p. 169-188.
21. HESS, P.C., 1989. Origins of Igneous Rocks. Harvard University Press, 336 p.
22. HOBBS, B.E., MEANS, W.D. and WILLIAMS, P.F., 1976. An outline of structural geology. Wiley, New York, 571 p.
23. IRVINE, T.N. and BARAGAR, W.R.A., 1971. A guide to the chemical classification of the common volcanic rocks. Canadian Journal of Earth Science, 8, p. 523-548.
24. LAFRANCE, J., 1998. Métallogénie et contexte tectonique de l'indice St-Élie, Guyane Française. M.Sc. thesis, Université du Québec à Montréal, Montréal, Québec, 123 p.
25. LAFRANCE, J., BARDOUX, M., STEVENSON, R., MACHADO, N., SAUVAGE, J.-F. and FOURNIER, D., 1997. Geochemical characteristics of magmatic rocks of the St-Élie area, Northern greenstone belt, French Guiana: A Paleoproterozoic oceanic arc and collision zone within the Guiana Shield. Abstracts with Programs, Geological Society of America, 29, p. 158.
26. LEDRU, P., LASERRE, J.L., MANIER, E. and MERCIER, D., 1991. Révision de la lithologie du Protérozoique inférieur du craton guyanais. Tectonique transcurrente et dynamique des bassins sédimentaires. Bull. Soc. Géol. Fr., 4, p. 627-636.
27. LEDRU, P., JOHAN, V., MILESI, J.P. and TEGYEY, M., 1994. Evidence for a 2.0 Ga continental accretion in the circum-south Atlantic provinces. Precambrian Research, 69, p. 169-191.
28. LeROEX, A.P., 1987. Source regions of mid-ocean ridge basalts: Evidence for enrichment processes. In Mantle Metasomatism. Edited by M.A. Menzies and C.J. Hawkesworth. Academic Press, London, p. 389-422.
29. McCUAIG, T.C. and KERRICH, R., 1994. P-T-t-deformation-fluid characteristics of lode gold deposits: Evidence from alteration systematics. In Alteration and Alteration Processes Associated with Ore-forming Systems. Edited by D.R. Lentz. Geological Association of Canada, Short Course Notes, 11, p. 339-379.
30. MENENDEZ, A., 1995. Cinturones de rocas verdes paleoproterozoicos del escudo de Guayana en Venezuela; Geologia y potencial aurifero. Boletin de Geologia del Ministerio de Energia y Minas, Publicion especiale 10, p. 305-321.
31. MILÉSI, J.-P., EGAL, E., LEDRU, P., VERNHET, Y., THIÉBLEMONT, D., COCHERIE, A., TEGYEY, M., MARTEL-JANTIN, B. and LAGNY, P., 1995. Les minéralisations du Nord de la Guyane française dans leur cadre géologique. Chronique de la Recherche Minière, 518, p. 5-58.
32. MONTGOMERY, C.N., 1979. Uranium-lead isotopes of the Archean Imataca series, Venezuelian Guiana Shield. Contributions to Mineralogy and Petrology, 69, p. 167-176.
33. NAKAMURA, N., 1974. Determination of REE, Ba, Fe, Mg, Na and K in carbonaceous and ordinary chondrites. Geochimica et Cosmochimica Acta, 38, p. 757-775.
34. NORCROSS, C.E., DAVIS, D.W. and SPOONER, E.T.C., 1998. U-Pb geochronology of the Omai intrusion-hosted Au-quartz vein deposit and host rocks, Guyana, South America. Abstracts with Programs, GSA Annual Meeting, p. A-127.
35. OHMOTO, H., 1986. Stable isotope geochemistry of ore deposits. In Stable Isotopes in High Temperature Processes. Edited by J.W. Valley, H.P. Taylor Jr., and J.R. O'Neil. Mineralogical Society of America, Reviews in Mineralogy, 16, p. 1-40.
36. PEARCE, J.A., 1982. Trace element characteristics of lavas from destructive plate boundaries. In Andesites. Edited by R.S. Thorpe. John Wiley and Sons, New York, p. 524-548.
37. PEARCE, J.A., HARRIS, N.B.W. and TINDLE, A.G., 1984. Trace element discrimination diagrams for the tectonic interpretation of granitic rocks. Journal of Petrology, 25, p. 956-983.
38. STACEY, J.S. and KRAMERS, J.D., 1975. Approximation of terrestrial lead isotope evolution by a two-stage model. Earth and Planetary Science Letters, 26, p. 207-221.
39. STEIGER, R.H. and JAGER, E., 1977. Subcommission on Geochronology: Convention on the use of decay constants in geo- and cosmochronology. Earth and Planetary Science Letters, 36, p. 359-362.
40. STERN, R.A., SYME, E.C., BAILES, A.H. and LUCAS, S.B., 1995. Paleoproterozoic (1.90-1.86 Ga) arc volcanism in the Flin Flon Belt, Trans-Hudson Orogen, Canada. Contributions to Mineralogy and Petrology, 119, p. 117-141.
41. TREMLOW, S.G., 1984. Archean gold-telluride mineralization of the Commoner mine, Zimbabwe. In Gold 82. Edited by R.P. Foster. Balkema, Rotterdam, p. 469-492.
42. VANDERHAEGHE, O., LEDRU, P., THIEBLEMONT, D., EGAL, E., COCHERIE, A., TEGYEY, M. and MILÉSI, J.P., 1998. Contrasting mechanism of crustal growth. Precambrian Research, 92, p. 165-194.
43. VOICU, G., BARDOUX, M., HARNOIS, L. and CRÉPEAU, R., 1997a. Lithological and geochemical features of igneous and sedimentary rocks at the Omai gold mine, Guyana, South America. Exploration and Mining Geology, 6. p.153-170.
44. VOICU, G., BARDOUX, M., STEVENSON, R. and JÉBRAK, M., 1997b. The Omai deposit, Guyana: Determination of age and sources of gold using Nd-Sr isotopes of hydrothermal scheelite and its spatially-related lithologies. Program with Abstracts, GAC-MAC Joint Annual Meeting, 22, p. A154.
45. VOICU, G., BARDOUX, M. and JÉBRAK, M., 1999a. Tellurides from the Paleoproterozoic Omai gold deposit, Guiana Shield. Canadian Mineralogist, 37, p. 815-829.
46. VOICU, G., BARDOUX. M., JÉBRAK, M. and CRÉPEAU, R., 1999b. Structural, mineralogical and geochemical studies of the Paleoproterozoic Omai gold deposit, Guyana. Economic Geology (in press).
47. WALROND, G.W., 1980. A metallogenetic scheme for the Guyana Shield. In Metalogenesis en Latinoamerica. Edited by J.L.L. Moreno. Simposium Internacional, p. 141-164.
48. WILSON, M., 1989. Igneous Petrogenesis (A global) tectonic approach. Unwin Hyman, 466 p.
49. WINCHESTER, J.A. and FLOYD, P.A., 1977. Geochemical discrimination of different magma series and their differentiation products using immobile elements. Chemical Geology, 20, p. 325-343.
50. WOOD, D.A., 1980. The application of a Th-Hf-Ta Diagram to problems of tectonomagmatic classification and to establishing the nature of crustal contamination of basaltic lavas of the British Tertiary Volcanic Province. Earth and Planetary Science Letters, 50, p. 11-30.