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Boron-free kornerupine from the Reynolds Range, Arunta Block, central Australia

Published online by Cambridge University Press:  05 July 2018

J. K. Vry
J. K. Vry*
Affiliation:
Department of Earth Sciences, Monash University, Clayton, Victoria, 3168, Australia
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Abstract

Nearly boron-free kornerupine is locally abundant in pods or lenses of coarse-grained, non-foliated, Mg- and Al-rich rocks that occur at high metamorphic grades in early Proterozoic metapelitic rocks from the Reynolds Range, Northern Territory, Australia. This is the third reported occurrence of boron-free kornerupine worldwide. The samples consist almost entirely of coarse-grained kornerupine and its breakdown products sapphirine, cordierite, and gedrite or orthopyroxene. The kornerupine contains only 0.45 wt.% B2O3, corresponding to 0.098 B atoms per 22 (O, OH), and closely approximates 11:10:11 in terms of molar ratios of (MgO + FeOtotal):Al2O3:SiO2, with XMg = Mg/(Mg + Fetotal) = 0.874. The unusual textures and bulk compositions of the rocks in the pods are interpreted to have resulted from metasomatism and high-grade metamorphism (750 to 800° and ∼ 4.5 kbar) of precursors that may have included sedimentary Mg-rich clays. Rocks containing boron-poor, and relatively boronrich kornerupine (2.18 wt.% B2O3; XMg = 0.892) are separated in outcrop by as little as 10 m of the foliated cordierite-quartzite country rock and other rock types, suggesting that the compositions or amounts of the metasomatic fluids varied on a local scale.

Keywords

kornerupineboronmetapeliteReynolds RangeAustralia
Type
Mineralogy
Information
Mineralogical Magazine , Volume 58 , Issue 390 , March 1994 , pp. 27 - 37
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1994

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References

Allen, A. R. (1979) Contrib. Mineral. Petrol, 71, 85–98.Google Scholar
Callen, R. A. (1984) In Palygorskite-Sepiolite. Occurrences, Genesis and Uses. (Singer, A. and Galan, E., eds.) Developments in Sedimentology 37, Elsevier, Amsterdam, 1-37.Google Scholar
Chinner, G. A. and Sweatman, T. R. (1968) Mineral Mag., 36, 1052–60.Google Scholar
Clarke, G. L. and Powell, R. (1991) J. Metam. Geol, 9, 267–81.Google Scholar
Clifford, T. N., Stumpfl, E. F., and Maciver, J. R. (1975) Mineral. Mag., 40, 347–56.Google Scholar
Collins, W. J. and Vernon, R. H. (1991), Geology, 19, 835-8.Google Scholar
Dirks, P. H. G. M. and Wilson, C. J. L. (1990) J. Struct. Geol, 12, 651–65.Google Scholar
Dirks, P. H. G. M., Hand, M., and Powell, R. (1991) J. Metam. Geol, 9, 641–61.Google Scholar
Droop, G. T. R. (1989) J. Metam. Geol, 7, 383–403.Google Scholar
Goscombe, B. (1992) J. Metam. Geol, 10, 181–201.Google Scholar
Grant, J. A. (1968) Amer. J. Set, 266, 908–31.Google Scholar
Grew, E. S., Chernosky, J. V., Werding, G., Abraham, K., Marquez, N., and Hinthorne, J. R. (1990) J. Petrol, 31, 1025–70.Google Scholar
Hand, M., Dirks, P. H. G. M., Powell, R., and Buick, I. S. (1992) Geology, 20, 649–52.Google Scholar
Hensen, B. J. and Warren, R. G. (1983) Geol. Soc. Australia Convention Abstr., 9, 70–72.Google Scholar
Herd, R. K. (1973) Gronl. Geol. Unders., 51, 65–71.Google Scholar
Hoefs, J. (1987) Stable Isotope Geochemistry (third edition). Springer-Verlag, Berlin, 241 pp.Google Scholar
Holdaway, M. J. (1971) Amer. J. Set, 271, 97–131.Google Scholar
Holland, T. J. B. and Powell, R. (1990) J. Metam. Geol, 8, 89–124.Google Scholar
Hudson, D. R. and Wilson, A. F. (1966) Geol. Mag., 103, 293-8.Google Scholar
Jenkins, D. M. and Chernosky, J. V., Jr. (1986) Amer. Mineral, 71, 924–36.Google Scholar
Klaska, R., and Grew, E. S. (1991) Amer. Mineral, 76, 1824–35.Google Scholar
Kyser, T. K. (1987) In Stable Isotope Geochemistry of Low Temperature Fluids. (Kyser, T. K., ed.), Mineral. Assoc. Canada, 13, Toronto, 1-84.Google Scholar
Lai, R. K. and Moorhouse, W. W. (1969) Can. J. Earth Set, 6, 145–65.Google Scholar
Lai, R. K., Ackermand, D., Seifert, F. and Haldar, S. K. (1978) Contrib. Mineral Petrol, 67, 169–87.Google Scholar
McKie, D. (1959) Mineral. Mag., 32, 282–307.Google Scholar
McPhail, D. C, Berman, R. G., and Greenwood, H. J. (1990) Canad. Mineral, 28, 859–74.Google Scholar
Nixon, P. H., Reedman, A. J. and Burn, L. K. (1973) Mineral. Mag., 39, 420–8.Google Scholar
Powell, R. and Holland, T. J. B. (1985) J. Metam. Geol, 3, 327–42.Google Scholar
Powell, R. and Holland, T. J. B. (1988) J. Metam. Geol, 6, 173–204.Google Scholar
Reinhardt, J. (1987) J. Metam. Geol, 5, 451–72.Google Scholar
Robinson, P., Spear, F., Schumacher, J. C, Laird, J., Klein, C, Evans, B. W., and Doolan, B. (1982) In Amphiboles, Petrology and Experimental Phase Relations., (Veblen, D. R. and Ribbe, P. H., eds.), Reviews in Mineralogy 9B, Mineralogical Society of America pp. 1—211.Google Scholar
Savin, S. M. and Lee, M. (1988) In Hydrous Phyllosilicates (exclusive of micas)., (Bailey, S. W., ed.) Reviews in Mineralogy, 19, Mineralogical Society of America, pp. 189—223.Google Scholar
Schreyer, W. (1977) Tectonophys., 43, 127–44.Google Scholar
Schreyer, W. and Abraham, K. (1976a) Contrib. Mineral Petrol, 54, 109-26.Google Scholar
Schreyer, W. and Abraham, K. (1976b) Contrib. Mineral. Petrol, 59, 111-30.Google Scholar
Seifert, F. (1975) Amer. J. Set, 275, 57–87.Google Scholar
Stewart, A. J. (1981) Reynolds Range region, Northern Territory. Australian Bureau of Mineral Resources, Geology and Geophysics, 1:100 000 Geological Map Series, Australian Government Publishing Service, Canberra.Google Scholar
Touret, J. and De la Roche, H. (1971) Norsk Geol. Tidsskr., 51, 169–75.Google Scholar
Velde, B. (1977) Clays and clay minerals in natural and synthetic systems, Developments in sedimentology 21.Elsevier, Amsterdam, 218 pp.Google Scholar
Vry, J. K. and Cartwright, I. (1993) Contrib. Mineral. Petrol, (in press).Google Scholar
Warren, R. G. (1979) Nature, 278, 159–161.CrossRefGoogle Scholar
Warren, R. G. and Hensen, B. J. (1987) Mineral. Mag., 51, 409–15.CrossRefGoogle Scholar
Warren, R. G. and McCaU, D. H. (1983) B. M. R. Journal of Australian Geol. and Geophys., 8, 93—6.Google Scholar
Waters, D. J. and Moore, J. M. (1985) Contrib. Mineral. Petrol, 91, 369–82.CrossRefGoogle Scholar
Werding, G. and Schreyer, W. (1978) Contrib. Mineral. Petrol, 67, 247–59.CrossRefGoogle Scholar
Windley, B. F., Ackermand, D., and Herd, R. K. (1984) Contrib. Mineral. Petrol, 86, 342–58.CrossRefGoogle Scholar
Woodford, P. J. and Wilson, A. F. (1976a) Neues Jahrb. Mineral, ML, 15–35.Google Scholar
Woodford, P. J. and Wilson, A. F. (19766) Mineral. Mag., 40, 589–94.CrossRefGoogle Scholar