The archean komatiite-related inyala chromitite, Southern Zimbabwe

Economic Geology

Volumn 92, Issue 1, 1997, Pages 98-107

  Rollinson, Hugh ^a  

^a UNIVERSITY OF GLOUCESTERSHIRE   (United Kingdom)

Author keywords

[No Author keywords available]

Indexed keywords

ARCHAEAN; CHROMITITE; CUMULATE; GEOCHEMISTRY; KOMATIITE;

ZIMBABWE, INYALA MINE;

EID: 0030782306     PISSN: 03610128     EISSN: None     Source Type: Journal    
DOI: 10.2113/gsecongeo.92.1.98     Document Type: Article

References (41)

1. Arndt, N.T., and Fleet, M.E., 1979, Stable and metastable pyroxene crystallization in layered komatiite lava flows: American Mineralogist, v. 64, p. 856-864.
2. Ballhaus, C., Berry, R.F., and Green, D.H., 1991, High pressure experimental calibration of the olivine-orthopyroxene-spinel oxygen barometer: Implications for the oxidation state of the upper mantle: Contributions to Mineralogy and Petrology, v. 107, p. 27-40.
3. Barnes, S.J., 1986, The distribution of chromium among orthopyroxene, spinel and silicate liquid at atmospheric pressure: Geochimica et Cosmochimica Acta, v. 50, p. 1889-1909.
4. Berger, M., Kramers, J. D., and Nagler, T. F., 1995, Geochemistry and geochronology of charnockite and enderbites in the northern marginal zone of the Limpopo belt, southern Africa, and genetic models: Schweizerische Mineralogie und Petrographie Mitteilungen, v. 75, p. 17-42.
5. Bickle, M.J., Arndt, N.T., Nisbet, E.G., Orpen, J.L., Martin, A., Keayes, R.R. and Renner, R., 1993, Geochemistry of the igneous rocks of the Belingwe greenstone belt: Alteration, contamination and petrogenesis: Geological Society of Zimbabwe Special Publication 2, Rotterdam, Balkema.
6. Cotterill, P., 1979, The Selukwe schist belt and its chromite deposits: Geological Society of South Africa Special Publication 5, p. 229-245.
7. de Wit, M.J., Hart, R.A., and Hart, R.J., 1987, The Jamestown Ophiolite Complex, Barberton mountain belt: A section through 3.5 Ga oceanic crust: Journal of African Earth Sciences, v. 6, p. 681-730.
8. 3+ concentrations in ferromagnesian silicates and oxides from microprobe analyses using stoichiometric criteria:. Mineralogical Magazine, v. 51, p. 431-435.
9. Eales, v., and Reynolds, I.M., 1986, Cryptic variations within chromitites of the Upper Critical Zone, northwestern Bushveld Complex: ECONOMIC GEOLOGY, v. 81, p. 1056-1066.
10. Evans, B.W., and Frost, B.R., 1975, Chrome spinel in progressive metamorphism - a preliminary analysis: Geochimica et Cosmochimica Acta, v. 39, p. 959-972.
11. Fernandes, T.R.C., 1987, The mineralogy and metallurgical behaviour of chromites from Zimbabwe: Unpublished M.Ph. thesis, University of Zimbabwe.
12. Griffin, W.L., Ryan, C.G., Gurney, J.J., Sobolev, N.V., and Win, T.T., 1994, Chromite macrocrysts in kimberlites and lamproites: Geochemistry and origin: CPRM Special Publication 1A/93, p. 366-377.
13. Huppert, H.E., Sparks, R.S.J., Turner, J.S., and Arndt, N.T., 1984, Emplacement and cooling of komatiite lavas: Nature, v. 309, p. 19-22.
14. Irvine, T.N., 1975, Crystallization sequences in the Muskox intrusion and other layered intrusions II. Origin of chromitite layers and similar deposits of other magmatic ores: Geochimica et Cosmochimica Acta, v. 39, p. 991-1020.
15. _1977, Origin of chromitite layers in the Muskox intrusion and other stratigraphic intrusions: Geology, v. 5, p. 272-277.
16. _1980a, Magmatic density currents and cumulus processes: American Journal of Science, v. 280A, p. 1-58.
17. _1980b, Magmatic infiltration metasomatism, double diffusive fractional crystallization and adcumulus growth in the Muskox intrusion and other layered intrusions, in Hargreaves, R.B., ed., Physics of magmatic processes:Princeton, NJ, Princeton University Press, p. 325-383.
18. Irvine, T.N., Keith, D.W., and Todd, S.G., 1983, The J-M platinum-palladium reef in the Stillwater Complex, Montana. II. Origin by double diffusive convective magma mixing and implication for the Bushveld Complex: ECONOMIC GEOLOGY, v. 78, p. 1287-1334.
19. Jaoul, O., Bertran-Alvarez, Y., Liebermann, R.C., and Price, G.D., 1995, Fe-Mg interdiffusion in olivine up to 9 Gpa at T3 600-900°C; experimental data and comparison with defect calculations: Physics of the Earth and Planetary Interiors, v. 89, p. 199-218.
20. Kamber, B.S., and Biino, G.G., 1995, The evolution of high T- low P granulites in the northern marginal zone sensu stricto, Limpopo belt, Zimbabwe - the case for petrography: Schweitzerische Mineralogie und Petrographie Mitteilungen, v. 75, p. 427-454.
21. Kamber, B.S., Biino, G.G., Wilbrans, J.R., Davies, G.R., and Villa, I.M., 1996, Archean granulites of the Limpopo belt, Zimbabwe: One slow exhumation or two rapid events?: Tectonics (in press)
22. Kinzler, R.J., and Grove, T.L., 1985, Crystallization and differentiation of Archean komatiite lavas from northeast Ontario: Phase equilibrium and kinetic studies: American Mineralogist, v. 70, p. 40-51.
23. Mkweli, S., Kamber, B., and Berger, M., 1995, Westward continuation of the craton-Limpopo belt tectonic break in Zimbabwe and new age constraints on the timing of the thrusting: Geological Society of London Journal, v. 152, p. 77-83.
24. Nisbet, E.G., and Chinner, G.A., 1981, Controls of the eruption of mafic and ultramafic lavas, Ruth Well, Ni-Cu prospect, West Pilbara: ECONOMIC GEOLOGY, v. 76, p. 1729-1735.
25. Nisbet, E.G., Cheadle, M.J., Arndt, N.T., and Bickle, M.J., 1993, Constraining the potential temperature of the Archean mantle: A review of the evidence from komatiites: Lithos, v. 30, p. 291-307.
26. Prendergast, M.D., 1995, Inyala chromite exploration: Review of the geology of Inyala mine with recommendations for further exploration: Harare, Zimbabwe, Prospecting Ventures Ltd., Lochinvar, Report PV220/115, 13 p.
27. Renner, R., Nisbet, E.G., Cheadle, M.J., Arndt, N.T., Bickle, M.J., and Cameron, W.E., 1994, Komatiite flows from the Reliance Formation, Belingwe belt, Zimbabwe: I. Petrography and mineralogy: Journal of Petrology, v. 35, p. 361-400.
28. Robertson, I.D.M., and Du Toit, M.C., 1981, Mobile belts. A. The Limpopo mobile belt, in Hunter, D.R., ed., The Precambrian of the southern hemisphere: Elsevier, Amsterdam, p. 641-671.
29. Rollinson, H.R., 1989, Garnet-orthopyroxene thermobarometry of granulites from the north marginal zone of the Limpopo belt, Zimbabwe: Geological Society Special Publication 43, p. 331-335.
30. _1993, A terrane interpretation of the Archean Limpopo belt: Geological Magazine, v. 130, p. 755-765.
31. _1995a, The relationship between chromite chemistry and the tectonic setting of Archean ultramafic rocks, in Blenkinsop, T.G., and Tromps, P., eds., Sub-Saharan economic geology: Amsterdam, Balkema, p. 7-23.
32. _1995b, Composition and tectonic settings of chromite deposits through time - a discussion: ECONOMIC GEOLOGY, v. 90, p. 2091-2092.
33. Rollinson, H.R., and Blenkinsop, T.G., 1995, The magmatic, metamorphic and tectonic evolution of the northern marginal zone of the Limpopo belt in Zimbabwe: Geological Society of London Journal, v. 152, p. 65-75.
34. Sack and Ghiorso, 1991, Chromian spinels as petrogenetic indicators: thermodynamics and petrological applications: American Mineralogist, v. 76, p. 827-847.
35. Scholey, S.P., 1992, The geology and geochemistry of the Ngezi group volcanics, Belingwe greenstone belt, Zimbabwe: Unpublished Ph.D. thesis, University of Southampton.
36. Sherlock, S.C., 1996, Conditions of metamorphism and P-T evolution of the northern marginal zone, Limpopo belt: Unpublished M.Sc. thesis, University of Bristol.
37. Stowe, C.W., ed., 1987a,. Evolution of chromium ore fields: New York, Van Nostrand Reinhold Company, 340 p.
38. Stowe, C.W., 1987b, Chromite deposits of the Shurugwi greenstone belt, Zimbabwe, in Stowe, C.W., ed., Evolution of chromium ore fields: New York, Van Nostrand Reinhold Company, p. 71-88.
39. Ulmer, G.C., 1969, Experimental investigations of chromite spinels: ECONOMIC GEOLOGY MONOGRAPH 4, p. 114-131.
40. Wilson, A.H., 1982, The geology of the Great 'Dyke', Zimbabwe: The ultramafic rocks: Journal of Petrology, v. 23, p. 240-292.
41. Zhou, M.-F., and Kerrich R., 1992, Morphology and composition of chromite in komatiites from the Belingwe greenstone belt, Zimbabwe: Canadian Mineralogist, v. 30, p. 303-317.