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Al-rich diopside in alluvial ruby and corundum-bearing xenoliths, Australian and SE Asian basalt fields

Published online by Cambridge University Press:  05 July 2018

F. L. Sutherland ,
R. R. Coenraads ,
D. Schwarz ,
L. R. Raynor ,
B. J. Barron  and
G. B. Webb
F. L. Sutherland*
Affiliation:
Mineralogy, Australian Museum, 6 College Street, Sydney, NSW 2010, Australia
R. R. Coenraads
Affiliation:
Cluff Resources Pacific NL, Locked Bag 3355, Hornsby, NSW 2077, Australia
D. Schwarz
Affiliation:
Gübelin Gem Lab, Maihofstrasse 102, CH 600, Lucerne 9, Switzerland
L. R. Raynor
Affiliation:
Department of Geology and Geophysics, University of Sydney, NSW 2006, Australia
B. J. Barron
Affiliation:
7 Fairview Avenue, St Ives, Sydney, NSW 2075, Australia
G. B. Webb
Affiliation:
Mineralogy, Australian Museum, 6 College Street, Sydney, NSW 2010, Australia
*
* E-mail: [email protected]
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Abstract

Alluvial rubies and sapphires are found in palaeodrainage deposits along the Cudgegong-Macquarie River system, central eastern New South Wales, Australia. A pink to red suite contains Cr (up to 0.6 wt.% Cr2O3) as the main chromophore, exceeding Fe (up to 0.5 wt.%Fe2O3). Corrosive etching suggests a prior xenocrystic Mesozoic-Cenozoic basaltic transport, while Cr2O3/Ga2O3 to Fe2O3/TiO2 ratios indicate an original metamorphic source. Syngenetic mineral inclusions include Al-rich diopside, meionite and anatase. The Al-rich diopside (‘fassaite’) contains extremely high Al2O3 (20–21 wt.%). A blue-green suite contains Fe (up to 0.8 wt.% Fe2O3) as a dominant chromophore, while a rare nepheline-anorthoclase composite inclusion supports a magmatic phonolitic origin. The Cudgegong- Macquarie ruby formation is compared with a garnet granulite origin proposed for Thailand rubies and a xenolith of corundum-bearing garnet granulite from Ruby Hill, Bingara, Australia. Clinopyroxenecorundum thermometry suggests the Cudgegong-Macquarie rubies formed at T >1000–1300ºC, a high equilibration T for proposed lithospheric granulites. These rubies form a distinctive suite compared to other rubies from Australian and SE Asian basalt fields, but have some similarities with eastern Thailand rubies.

Keywords

corundumrubysapphirediopsidealluvialxenocryst, granulitebasalt fieldAustraliaSE Asia.
Type
Research Article
Information
Mineralogical Magazine , Volume 67 , Issue 4 , August 2003 , pp. 717 - 732
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 2003

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Footnotes

†

Deceased

References

Alaoui, H.C., Kornprobst, J. and Laporte, D. (1997 Inconsistencies between gnt-cpx geothermometry and . eld observations: example from the peraluminous eclogites from Beni Bousera (north Morocco). Terra Nova, 9, 83—86.CrossRefGoogle Scholar
Barron, B.J. (1995 Three chapters of a thesis on the Ruby Hill diatreme, Bingara, NSW by the late L.R. Raynor. Unpublished report, Australian Museum.Google Scholar
Bayliss, P. (1987 Mineral nomenclature: scapolite. Mineralogical Magazine , 51, 176.Google Scholar
Bradley, G., Yoo, E.K. and West, P. (1984 Geological mapping of Mesozoic to Tertiary diatremes and Illawarra Coal Measures east of Rylstone. Coal Geology Branch, NSW Department of Mineral Resources – File 1984/203 (unpublished).Google Scholar
Cameron, R.G., Barron, L.M., Meakin, N.S., Warren, A.A.Y., Raymond, O.L., Morgan, E.J., Henderson, G.G.A. and Pogson, D.J. (1999 Cainozoic. Pp. 336—56 in Dubbo 1:250,000 Geological Sheet SI/55-4 , 2nd edition. Explanatory Notes (Meakin, N.S. and Morgan, E.J., compilers). Geological Survey of NSW, Sydney, Australia.Google Scholar
Carlson, W.D. and Lindsley, D.H. (1988) The rmochemistry of pyroxe ne on the join Mg2Si2O6 –CaMgSi2O6. American Mineralogist , 73, 242—252.Google Scholar
Clark, J.R. and Papike, J.J. (1968 Crystal-chemical characteri sation of omphac ites. American Mineralogist, 53, 840—868.Google Scholar
Cliff, D.D.S. (1975 Gold dredging in New South Wales. Geological Survey of NSW, Mineral Resources, 41, 148 pp.Google Scholar
Cluff Resources Pacific NL (2001 Annual Report . Sydney, Australia, 36 pp.Google Scholar
Coenraads, R.R. (1992 Surface features of natural rubies and sapphires associated with volcanic provinces. Journal of Gemmology,, 23, 151—160.CrossRefGoogle Scholar
Daigle, L. and Barron, L.M. (1998 Features about some alluvial diamonds from Wellington and Kalimantan, Indonesia. Geological Survey of NSW Report GS1998/276 (unpublished).Google Scholar
Davies, R.M., O’Reilly, S.Y. and Griffin, W.L. (1999 Diamonds from Wellington, NSW: insights into the origin of eastern Australian diamonds. Mineralogical Magazine, 63, 447—471.CrossRefGoogle Scholar
Davies, R.M., O’Reilly, S.Y. and Griffin, W.L. (2002 Multiple origins of the eastern Australian alluvial diamonds. Economic Geology, 97, 109—123.CrossRefGoogle Scholar
Deer, W.A., Howie, R.A. and Zussman, J. (1963 Rock Forming Minerals. Vol. 4, Framework Silicates . Longmans, London, 435 pp.Google Scholar
Deer, W.A., Howie, R.A. and Zussman, J. (1978 Rock Forming Minerals. Vol. 2A Second Edition. Single Chain Silicates . Longmans Group, London, 668 pp.Google Scholar
Downes, P.M. (1999 Mineral occurrences. Pp. 396—426 in: Dubbo 1:250,000 Geological Sheet SI/55-4 , 2nd edition. Explanatory Notes (Meakin, N.S. and Morgan, E.J., compilers). Geological Survey of NSW, Sydney, Australia.Google Scholar
Edwards, A.C., Lovering, J.F. and Ferguson, J. (1979 High pressure basic inclusions from the Kayrunnera kimberlitic diatreme in New South Wales, Australia. Contributions to Mineralogy and Petrology, 69, 185—192.CrossRefGoogle Scholar
Ellis, D.J. and Green, D.H. (1979 An experimental study of the effect of Ca upon garnet-clinopyroxene Fe-Mg exchange equilibrium. Contributions to Mineralogy and Petrology, 71, 13—22.CrossRefGoogle Scholar
Embleton, B.B.J., Schmidt, P.W., Hamilton, L.H. and Riley, G.H. (1985 Dating volcanism in the Sydney Basin . Geological Society of Australia, NSW Division, Publication, 1, 59—72.Google Scholar
Gaines, R.V., Skinner, H.C., Foord, E.E., Mason, B. and Rosenzweig, A. (1997 Dana's New Mineralogy. The System of Mineralogy of James Dwight Dana and Edward Sailisbury Dana, 8th edition. John Wiley & Sons, New York, 1819 pp.Google Scholar
Griffin, W.L. and O’Reilly, S.Y. (1986 Mantle-derived sapphirine. Mineralogical Magazine,, 50, 635—640.CrossRefGoogle Scholar
Gübelin, E.J. and Peretti, A. (1997 Sapphires from the Andranondambo mine in SE Madagascar: evidence for metasomat ic skarn formation. Journal of Gemmology, 25, 453—470.CrossRefGoogle Scholar
Herzberg, C.T. (1978 Pyroxene geothermometry and geobarometry: experimental and thermodynamic evaluation of some subsolidus phase relations involving clinopyroxene in the system CaO – MgO–Al2O3 –SiO2. Geochimica et Cosmochimica Acta, 42, 945—957.CrossRefGoogle Scholar
Hughes, R.W. (1997 Ruby & Sapphire . R.W.H. Publishing, Boulder, Colorado, USA, 512 pp.Google Scholar
Holland, T.T.J. and Powell, R. (1998 An internally consistent themodynamic dataset for phases of petrological interest. Journal of Metamorphic Geology, 16, 309—344.CrossRefGoogle Scholar
Irving, A.J. (1974 Geochemical high-pressure experimental studies of garnet pyroxenite and pyroxene granulite xenoliths from the Delegate basaltic pipes, Australia. Journal of Petrology, 15, 1—40.CrossRefGoogle Scholar
Irving, A.J. (1986 Polybaric magma mixing in alkali basalts and kimberlites: Evidence from corundum, zircon and ilmenite megacrysts. Geological Society of Australia Abstracts Series,, 16, 262—264.Google Scholar
Jones, D.G. (1987 K-Ar isotopic dates, New South Wales. Geological Survey of NSW Report GS1986/ 237 (revised 1987, unpublished).Google Scholar
Kornprobst, J., Piboule, M. and Tabit, A. (1990 Corundum-bearing garnet clinopyroxenites at Beni Bousera (Morocco): Original plagioclase-rich gabbros recrystallised at depth within the mantle. Journal of Petrology, 31, 717—745.CrossRefGoogle Scholar
Kushiro, I. (1962 Clinopyroxene solid solutions Part I. The CaAl2SiO6 component. Japanese Journal of Geology and Geography, 33, 213—220.Google Scholar
Limtrakun, P., Zaw, K., Ryan, C.G. and Mernagh, T.P. (2001 Formation of the Denchai gem sapphires, northern Thailand: evidence from mineral chemistry and fluid /me lt inclusion characteristics. Mineralogical Magazine, 65, 725—735.CrossRefGoogle Scholar
Lovering, J.F. (1964 The eclogite-bearing basic igneous pipe at Ruby Hill, near Bingara, New South Wales. Journal of the Proceedings of the Royal Society of NSW, 97, 73—79.Google Scholar
Lovering, J.F. and White, A.A.J. (1964 The significance of primary scapolite in granulitic inclusions from deep-sea ted pipes. Journal of Petrology,, 5, 195—218.CrossRefGoogle Scholar
MacNevin, A.A. (1977 Diamonds in New South Wales. NSW Geological Survey, Mineral Resources, 42, 125 pp.Google Scholar
MacNevin, A.A. and Holmes, G.G. (1980 Gemstones . The Mineral Industry of New South Wales, 18. Geological Survey, NSW, 119 pp.Google Scholar
Mercier, A., Debat, P. and Saul, J.M. (1999 Exotic origin of the ruby deposits of the Mangari area in SE Kenya. Ore Geology Reviews, 14, 83—104.CrossRefGoogle Scholar
Meyer, H.H.O., Milledge, H.J., Sutherland, F.L. and Kennewell, P. (1997 Unusual diamonds and unique inclusions from New South Wales, Australia. Russian Geology and Geophysics, 38, 305—331.Google Scholar
Middlemost, E.E.A., Dulhunty, J.A. and Beck, R.W. (1992 Some Mesozoic igneous rocks from northeastern New South Wales and their tectonic setting. Journal of the Proceedings of the Royal Society of NSW,, 125, 1—11.Google Scholar
Morimoto, M. (1988 Nomenclature of pyroxenes. Mineralogical Magazine, 52, 535—550.CrossRefGoogle Scholar
Newton, R.C. and Goldsmith, J.R. (1975 Stability of the scapolite meionite (3CaAl2Si2O2.CaCO3) at high pressure and storage of CO2 in the deep crust. Contributions to Mineralogy and Petrology, 49, 49—62.CrossRefGoogle Scholar
O’Reilly, S.Y. and Griffin, W.L. (1985 A xenolithderived geotherm from southeastern Australia and its geophysical implications. Tectonophysics,, 111, 41—63.Google Scholar
Ollier, C.D. (1985 Geomorphology and volcanism in eastern Australia . Geological Society of Australia, NSW Division Publication, 1, 1—12.Google Scholar
Olliver, J.D. and Townsend, I.J. (1993 Gemstones in Australia. Australian Gemstone Industry Council, Sydney, 72 pp.Google Scholar
Powell, R. and Holland, T.T.J. (1985 An internally consistent thermodynamic data set with uncertainties and correlations: III Application methods, worked examples and a computer program. Journal of Metamorphic Geology, 6, 173—204.CrossRefGoogle Scholar
Rakotondrazafy, M.M.A., Moine, B. and Cuney, M. (1996 Mode of formation of hibonite (CaAl12O9) within the U-Th skarns from the granulites of SE Madagascar. Contributions to Mineralogy and Petrology, 123, 190—201.CrossRefGoogle Scholar
Schwarz, D. (1997 The chemical properties of gem corundums from Southeast Asia. 6th International Gemmological Conference, Germany, Abstracts Vol., p. 53.Google Scholar
Schwarz, D., Kanis, J. and Schmetzer, K. (2000 Sapph ires f rom Ambondromi fehy region, Antisiranana Province, northern Madagascar. Gems & Gemology, 36, 216—233.CrossRefGoogle Scholar
Scheibner, E. and Basden, H., editors (1996 Geology of New South Wales – Synthesis. Volume 1 Structural Framework . Geological Survey of NSW Memoirs of Geology, 13, 295 pp.Google Scholar
Stern, W.B. (1984 Zur Simultan Analyse von Silikaten (Hauptkomponenten, Spuren) mittels energie-dispersiver Röntgenfluoreszenz-S pektrometr ie (EDSXFA). Fresenius Zeitschri ft für Analaytis che Chemie,, 2560, 1—9.Google Scholar
Stolz, A.J. (1987 Fluid activity in the lower crust and upper mantle: mineralogical evidence bearing on the origin of amphibole and scapolite in ultramatic and mafic granulite xenoliths. Mineralogical Magazine, 51, 719—732.CrossRefGoogle Scholar
Sutherland, F.L. (1996 Alkaline rocks and gemstones, Australia: a review and synthesis. Australian Journal of Earth Science,, 43, 323—343.CrossRefGoogle Scholar
Sutherland, F.L. (1999 Volcanism, geotherms, gemstones and lithosphere, since orogenesis, N.E. New South Wales: A synthesis, Pp. 355—364 in: New England Orogen (Flood, P.G., editor). Earth Sciences, University of New England, Armidale, NSW 2351, Australia.Google Scholar
Sutherland, F.L. and Coenraads, R.R. (1996 An unusual ruby-sapphirine-spinel assemblage from the Tertiary Barrington volcanic province, New South Wales, Australia. Mineralogical Magazine, 60, 623—628.CrossRefGoogle Scholar
Sutherland, F.L. and Schwarz, D. (2001 Origin of gem corund ums from basalt ic . elds. Aus tral ian Gemmologist,, 21, 30—33.Google Scholar
Sutherland, F.L., Schwarz, D., Jobbins, E.A. and Coenraads, R.R. (1998 Distinctive gem corundum suites from discrete basalt . elds: a comparative study of Barrington, Australia, and West Pailin, Cambodia, gemfields. Journal of Gemmology, 26, 65—85.CrossRefGoogle Scholar
Sutherland, F.L., Graham, I.T., Pogson, R.E., Schwarz, D., Webb, G.B., Coenraads, R.R., Fanning, C.M., Hollis, J.D. and Allen, T.C. (2002 The Tumbarumba basaltic gemfield, New South Wales: In relation to sapphire-ruby deposits in eastern Australia. Records of the Australian Museum, 54, 215—248.CrossRefGoogle Scholar
Sutthirat, C., Saminpanya, S., Droop, G.G.T., Henderson, C.C.M. and Manning, D.D.A. (2001 Clinopyroxene-corundum assemblages from alkali basalt and alluvium, eastern Thailand: constraints on the origin of Thai rubies. Mineralogical Magazine, 65, 277—295.CrossRefGoogle Scholar
Teertstra, D.K., Schindler, M., Sherriff, B.J. and Hawthorne, F.C. (1999 Silvialite, a new sulfatedominant member of the scapolite group with an Al- Si composition near th. I4/m-P4 2/n phase transition. Mineralogical Magazine, 63, 321—329.CrossRefGoogle Scholar
Vysotskii, S.V., Shcheka, S.A., Nechaev, V.P., Soroka, V.P., Barkar, A.V. and Khanchuk, A.I. (2002 First Finding of sapphire from Cenozoic alkali-basaltic volcanoes in the Primor’e region. Doklady Akademii Nauk SSR, Earth Science, 387A, 1100—1103.Google Scholar
Warren, A.A.Y., Barron, L.M., Meakin, N.S., Morgan, E.J., Raymond, O.L., Cameron, R.G. and Colquhon, G.P. (1999 Mesozoic igneous rocks. Pp. 313—328 in: Dubbo 1:250,000 Geological Sheet SI/55-4 2nd edition, Explanatory Notes (Meakin, N.S. and Morgan, E.J., compilers). Geological Survey of NSW, Sydney, Australia.Google Scholar
Webb, G.B. (1997 Gemmological features of rubies and sapphires from the Barrington volcano, eastern Australia. Australian Gemmologist, 19, 471—475.Google Scholar
Wood, B.J. (1979 Activity composition relationships in Ca (Mg, Fe) Si2O6 –CaAl2SiO6 clinopyroxene solid solutions. American Journal of Science, 279, 854—875.CrossRefGoogle Scholar