Witwatersrand iron-formations and their significance for gold genesis and the composition limits of orthoamphibole

Mineralogy and Petrology

Volumn 56, Issue 3, 1996, Pages 273-295

  Frimmel, H E ^a  

^a UNIVERSITY OF CAPE TOWN   (South Africa)

Author keywords

[No Author keywords available]

Indexed keywords

AMPHIBOLE GROUP; CHLORITE; FLUID COMPOSITION; GOLD; IRON ORE; METALLOGENESIS; OVERPRINTING; PYRITE;

SOUTH AFRICA; WITWATERSRAND;

EID: 1542427991     PISSN: 09300708     EISSN: None     Source Type: Journal    
DOI: 10.1007/bf01162607     Document Type: Article

References (44)

1. Armstrong RA, Compston W, Retief EA, Williams LS, Welke HJ (1991) Zircon ion microprobe studies bearing on the age and evolution of the Witwatersrand basin. Precamb Res 53: 243-266
2. Armstrong RA, Fanning CM, Eldridge CS, Frimmel HE (1995) Geochronological and isotopic constraints on provenance and post-depositional alteration of the Witwatersrand Supergroup. Centennial Geocongress, Geol Soc S Afr, April 3-7 1995, Johannesburg, vol 2, p 1086 (Abstract)
3. 2. J Petrol 29: 445-522
4. Beukes NJ, Strauss H (1995) Petrography and geochemistry of the Jan Smuts (Contorted Bed) iron-formation of the West Rand Group. Centennial Geocongress, Geol Soc S Afr, April 3-7 1995, Johannesburg, 2, pp 1087-1088 (Abstract)
5. Bisschoff AA (1982) Thermal metamorphism in the Vredefort Dome. Geol Soc South Africa Trans 85: 43-57
6. Boer RH, Reimold WU, Kesler SE (1995) Conditions of gold mobilization in the Ventersdorp Contact Reef, Witwatersrand Basin. Centennial Geocongress, Geol Soc S Afr, April 3-7 1995, Johannesburg, vol 2, p 696 (Abstract)
7. Bryndzia LT, Scott SD (1987) The composition of chlorite as a function of sulfur and oxygen fugacity: an experimental study. Am J Sci 287: 50-76
8. Cathelineau M (1988) Cation site occupancy in chlorites and illites as a function of temperature. Clay Minerals 23: 471-485
9. Corner B, Wilshire WA (1989) Structure of the Witwatersrand Basin derived from interpretation of aeromagnetic and gravity data. In: Garland GD (ed) Proc Exploration '87: 3rd Decennial International Conference on Geophysical and Geochemical Exploration for Minerals and Groundwater. Ontario Geol Surv [Spec Vol] 3: 532-546
10. Ding K, Seyfried WE (1992) Determination of Fe-Cl complexing in the low pressure supercritical region (NaCl fluid): iron solubility constraints on pH of subseafloor hydrothermal fluids. Geochim Cosmochim Acta 56: 3681-3692
11. Eldrige CS, Phillips GN, Myers RE (1993) Sulfides in the Witwatersrand gold fields: new perspectives on old sediments via SHRIMP. Ann Meet Geol Soc Amer, Abstr 25, A278 (Abstract)
12. Eriksson PG, Turner BR, Vol RG (1981) Evidence of tidal processes from the lower part of the Witwatersrand Supergroup, South Africa. Sediment Geol 29: 309-325.
13. Frimmel HE (1994) Metamorphism of Witwatersrand gold. Explor Mining Geol 3: 357-370
14. Frimmel HE, le Roex AP, Knight J, Minter WEL (1993) A case study on the post-depositional alteration of the Witwatersrand Basal Reef gold placer. Econ Geol 88: 249-265
15. Frimmel HE, le Roex AP, Knight J, Minier WEL (1994) A case study on the post-depositional alteration of the Witwatersrand Basal Reef gold placer- a reply. Econ Geol 255-257
16. Gartz VH, Frimmel HE, Gerneke D (1995) The application of cathodoluminescence to Witwatersrand quartz. Centennial Geocongress, Geol Soc S Afr, April 3-7 1995, Johannesburg, vol 2, pp 923-926 (Abstract)
17. Hallbauer DK (1986) The mineralogy and geochemistry of Witwatersrand pyrite, gold, uranium, and carbonaceous matter. In: Anhaeusser CR, Maske S (eds) Mineral deposits of Southern Africa. Geol Soc S Afr, Johannesburg, pp 731-752
18. Helgeson HC, Delany JM, Nesbitt HW, Bird DK (1978) Summary and critique of the thermodynamic properties of rock-forming minerals. Am J Sci 278-A: 229 pp
19. Holland HD (1984) The chemical evolution of the atmosphere and the oceans. Princeton University Press, Princeton 582 pp
20. Hutchinson RW, Viljoen RP (1988) Re-evaluation of gold sources in Witwatersrand ores. South Afr J Geol 91: 157-173
21. Leaks BE (1978) Nomenclature of amphiboles. Can Mineral 16: 501-520
22. Liebenberg WR (1955) The occurrence and origin of gold and radioactive minerals in the Witwatersrand System, the Dominion Reef, the Ventersdorp Contact Reef and the Black Reef. Trans Geol Soc S Afr 58: 101-223
23. Martini JEJ (1992) The metamorphic history of the Vredefort Dome at approximately 2 Ga as revealed by coesite-stishovite-bearing pseudotachylites. J Metamorph Geol 10: 517-527
24. th Annual Conference, Tectonics Division, Geol Soc S Afr, Feb 7, 1991, Johannesburg, pp 21-22 (Abstract)
25. Meyer FM, Wallmach T, Hencekl J, Schweitzer JK (1990) Chlorite compositions and fluid conditions in some Witwatersrand reefs. Geocongress '90, Geol Soc S Afr, July 2-6 1990, Cape Town, pp 391-394 (Abstract)
26. Minter WEL, Goedhart M, Knight J, Frimmel HE (1993) The morphology of Witwatersrand gold grains from the Basal Reef: evidence for their detrital origin. Econ Geol 88: 237-248
27. 2 and the stability limit of stilpnomelane in metamorphosed Precambrian iron-formations. Contrib Mineral Petrol 102: 478-491
28. Phillips GN, Myers RE (1989) The Witwatersrand Gold fields, part II. An origin for Witwatersrand gold during metamorphism and associated alteration. In: Keys RR Ramsay WRH, Groves DI (eds) The geology of gold deposits: the perspective in 1988. Econ Geol Monogr 6: 598-608
29. Popp RK, Gilbert MC, Craig JR (1977a) Stability of Fe-Mg amphiboles with respect to oxygen fugacity. Am Mineral 62: 1-12
30. Popp RK, Gilbert MC, Craig JR (1977b) Stability of Fe-Mg amphiboles with respect to sulfur fugacity. Am Mineral 62: 13-30
31. Powell R, Holland TJB (1988) An internally consistent thermodynamic dataset with uncertainties and correlations III. Application methods, worked examples and a computer program. J Metamorph Geol 6: 173-204
32. Ramdohr P (1958) New observations on the ores of the Witwatersrand in South Africa and their genetic significance. Trans Geol Soc S Afr 61 (Annexure): 50 pp
33. Reynolds DK (1991) The significance of diamictites in the Witwatersrand Government Subgroup, Klerksdorp gold field, South Africa. Thesis, University of Cape Town, 59 pp (unpublished)
34. Robb LJ, Meyer FM (1991) A contribution to recent debate concerning epigenetic versus syngenetic mineralization processes in the Witwatersrand basin. Econ Geol 86: 396-401
35. Robinson P, Ross M, Jaffe HW (1971) Composition of the anthophyllite-gedrite series, comparisons of gedrite and hornblende, and the anthophyllite-gedrite solvus. Am Mineral 56: 1005-1041
36. Robinson P, Spear FS, Schuhmacher JC, Laird J, Klein C, Evans BW, Doolan BL(1982) Phase relations of metamorphic amphiboles: natural occurrence and theory. In: Veblen DR, Ribbe PH (eds) Amphiboles: petrology and experimental phase relations. Rev Mineral 9B: 1-227
37. Ross M, Papike JJ, Wier Shaw K (1969) Exsolution textures in amphiboles as indicators of sub-solidus thermal histories. Mineral Soc Amer, Spec Paper 2: 275-299
38. Schidlowski M (1968) The gold fraction of the Witwatersrand conglomerates from the Orange Free State Goldfield (South Africa). Mineral Deposita 3: 344-363
39. Schidlowski M, Junge C (1973) Die Evolution der Erdtamosphäre. Phys Blätter 29: 203-212
40. Spear FS (1980) The gedrite-anthophyllite solvus and the composition limits of orthoamphibole from the Post Pond Volcanics, Vermont. Am Mineral 65: 1102-1118
41. Stanistreet IG, McCarthy TS (1991) Changing tectono-sedimentary scenarios relevant to the development of the Late Archaean Witwatersrand Basin. J Afr Earth Sci 13: 65-81
42. Staut JH (1971) Four coexisting amphiboles from Telemark, Norway. Am Mineral 56: 212-224
43. Tankard AJ, Jackson MPA, Eriksson KA, Hobday OK, Hunter DR, Minier WEL (1982) Crustal evolution of Southern Africa. Springer, New York, 523 pp
44. Velde B, Medhioub M (1988) Approach to chemical equilibrium in diagenetic chlorites. Contrib Mineral Petrol 98: 122-127