Hydrothermal REE-Rich eudialyte from the Pilanesberg Complex, South Africa

Canadian Mineralogist

Volumn 37, Issue 3, 1999, Pages 653-663

  Olivo, Gema Ribeiro ^a,b   Williams Jones, Anthony E ^a  

^a MCGILL UNIVERSITY   (Canada)

^b QUEEN S UNIVERSITY   (Canada)

Author keywords

Alkaline complex; Eudialyte; Hydrothermal; Nepheline syenite; Pilanesberg; Rare earth elements; South Africa

Indexed keywords

HYDROTHERMAL DEPOSIT; MINERALOGY; PETROLOGY; RARE EARTH ELEMENT; SYENITE;

SOUTH AFRICA;

EID: 0033377987     PISSN: 00084476     EISSN: None     Source Type: Journal    
DOI: None     Document Type: Article

References (32)

1. AJA, S.U., WOOD, S.A. & WILLIAMS-JONES, A. E. (1995): The aqueous geochemistry of Zr and the solubility of some Zr-bearing minerals. Appl. Geochem. 10, 603-620.
2. BALASHOV, A.Y. & TURANSKAYA, N.V. (1960): Characteristics of composition of the rare earths in eudialytes and loparites of the Lovozero Massif. Geochem. 2, 144-155.
3. COULSON, I.M. (1997): Post-magmatic alteration in eudialyte from the North Qôroq centre, South Greenland. Mineral. Mag. 61, 99-109.
4. _ & CHAMBERS, A.D. (1996): Patterns of zonation in rare-earth-bearing minerals in nepheline syenites of the North Qôroq center, South Greenland. Can. Mineral. 34, 1163-1178.
5. DEER, W.A., HOWIE, R.A., & ZUSSMAN, J. (1986): Rock-Forming Minerals. 1B. Disilicates and Ring Silicates (2nd ed.). Longman Scientific & Technical, Harlow, U.K. (348-363).
6. GAMMONS, C.H., WOOD, S.A. & WILLIAMS-JONES, A.E. (1996): The aqueous geochemistry of the rare earth elements and yttrium. VI. Stability of neodymium chloride complexes from 25 to 30°C. Geochim. Cosmochim. Acta 60, 4615-4630.
7. GIERÉ, R. & WILLIAMS, C.T. (1992): REE-bearing minerals in a Ti-rich vein from the Adamello contact aureole (Italy). Contrib. Mineral. Petrol. 112, 83-100.
8. GIUSEPPETI, G., MAZZI, F. & TADINI, C. (1971): The crystal structure of eudialyte. Tschermaks Mineral. Petrogr. Mitt. 16, 105-127.
9. GOLYSHEV, V.M., SIMONOV, V.I. & BELOV. N.V. (1971): Crystal structure of eudialyte. Sov. Phys. Crystallogr. 16, 70-74.
10. HAAS, J.R., SHOCK, E.L. & SASSANI, D.A. (1995): Rare earth elements in hydrothermal systems: estimates of standard partial molal thermodynamic properties of aqueous complexes of the REE at high pressures and temperatures. Geochim. Cosmochim. Acta 59, 4329-4350.
11. HARRIS, C., CRESSEY, G., BELL, J.D., ATKINS, F.B. & BESWETHERICK, S. (1982): An occurrence of rare-earth-rich eudialyte from Ascension Island, South Atlantic. Mineral. Mag. 46, 421-425.
12. _ & RICKARD, S.R. (1987): Rare-earth-rich eudialyte and dalyite from a peralkaline granite dyke at Straumsvola, Dronning Maud Land, Antarctica. Can. Mineral. 25, 755-762.
13. JOHNSEN, O. & GAULT, R.A. (1997): Chemical variation in eudialyte. Neues Jahrb. Mineral., Abh. 171, 215-237.
14. _, GRICE. J.D. & GAULT, R.A. (1997): The Si-Nb relation in the eudialyte group. Geol. Assoc. Can. - Mineral. Assoc. Can., Program Abstr. 22, A-74.
15. _, _ & _ (1998): Kentbrooksite from the Kangerdlugssuaq intrusion, East Greenland, a new Mn-REE-Nb-F end-member in a series within the eudialyte group: description and crystal structure. Eur. J. Mineral. 10, 207-219.
16. JONES, A.P. & LARSEN, L.M. (1985): Geochemistry of REE minerals of nepheline syenites from the Motzfeldt Center, South Greenland. Am. Mineral. 70, 1087-1100.
17. KOGARKO, L.N. (1987): Alkaline rocks of the eastern part of the Baltic Shield (Kola Peninsula). In Alkaline Igneous Rocks (J.G. Fitton & B.G.J. Upton, eds.). Geol. Soc., Spec. Publ. 30, 531-544. Blackwell Scientific Publications, London, U.K.
18. _, LAZUTKINA, L.N. & ROMANCHEV, B.P. (1982): The origin of eudialyte mineralization. Geochem. Int. 19, 128-145.
19. _ & ROMANCHEV, B.P. (1976): Physicochemical conditions of deposition of eudialyte mineralization in agpaitic nepheline syenite. Geochem. Int. 15, 179-181.
20. KRIGMAN, L.D., LAZUTKINA, L.N. & KOGARKO, L.N. (1983): Laboratory data on eudialyte-lujavrite and eudialyte-lujavrite-water systems and the conditions of crystallization of eudialyte from alkali agpaitic melts. Geochem. Int. 20, 48-54.
21. LARSEN, L. M. & SØRENSEN, H. (1987): The Ilímaussaq intrusion - progressive crystallization and formation of layering in an agpaitic magma. In Alkaline Igneous Rocks (J.G. Fitton & B.G.J. Upton, eds.). Geol. Soc., Spec. Publ. 30, 473-488. Blackwell Scientific Publications. London, U.K.
22. LURIE, J. (1986): Mineralization of the Pilanesberg Alkaline Complex. In Mineral Deposits of South Africa 2 (C.R. Anhaeusser & S. Maske, eds.). The Geological Society of South Africa, Johannesburg, South Africa (2215-2228).
23. MANDARINO, J.A. (1999): Fleischer's Glossary of Mineral Species 1999. The Mineralogical Record Inc., Tucson, Arizona.
24. _ & ANDERSON, V. (1989): Monteregian Treasures: the Minerals of Mont Saint-Hilaire, Quebec. Cambridge University Press, London, U.K.
25. MARIANO, A.N. (1989): Economic geology of rare earth minerals. In Geochemistry and Mineralogy of Rare Earth Elements (B.R. Lipin & G.A. McKay, eds.). Rev. Mineral. 21, 309-337.
26. MITCHELL, R.H. (1996): Classification of undersaturated and related alkaline rocks. In Undersaturated Alkaline Rocks: Mineralogy. Petrogenesis and Economic Potential (R.H. Mitchell, ed.). Mineral. Assoc. Can., Short Course Vol. 24, 1-22.
27. PORTNOV, A.M. (1964): Distribution of the rare earths in the eudialytes of the Burpala Massif. Geochem. Int. 1, 929-932.
28. RETIEF, E.A. (1963): Petrological and Mineralogical Studies in the Southern Part of the Pilanesberg Complex, Transvaal, South Africa. Ph.D. thesis, Univ. of Oxford, Oxford, U.K.
29. RUBIN, J.N., HENRY, C.D. & PRICE, J.G. (1993): The mobility of zirconium and other immobile elements during the hydrothermal alteration. Chem. Geol. 110, 29-47.
30. VARD, E. & WILLIAMS-JONES, A.E. (1993): A fluid inclusion study of vug minerals in dawsonite-altered phonolite sills, Montreal, Quebec. Implications for HFSE mobility. Contrib. Mineral. Petrol. 113, 410-423.
31. WELLMAN, T.R. (1970): The stability of sodalite in a synthetic syenite plus aqueous chloride fluid system. J. Petrol. 11, 49-71.
32. WOOD, S.A. (1990): The aqueous geochemistry of the rare-earth elements and yttrium. 2. Theoretical predictions of speciation in hydrothermal solutions to 350°C at saturation water vapor pressure. Chem. Geol. 88, 99-125.