Metasomatism at a granitic pegmatite - Dunite contact in Galicia: The Franqueira occurrence of chrysoberyl (alexandrite), emerald, and phenakite: Reply

Canadian Mineralogist

Volumn 34, Issue 6, 1996, Pages 1332-1336

  Martin Izard, Agustin ^a   Paniagua, Andres ^a,c   Moreiras, Damaso ^a   Acevedo, Rogelio D ^b   Marcos Pascual, Celia ^a  

^a UNIVERSITY OF OVIEDO   (Spain)

^b Centro de Investigaciones en Recursos Geologicos   (Argentina)

^c UNIVERSITY OF ZARAGOZA   (Spain)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0006204295     PISSN: 00084476     EISSN: None     Source Type: Journal    
DOI: None     Document Type: Article

References (42)

1. ARENAS, R., GIL IBARGUCHI, J.I., GONZÁLEZ LODEIRO, F., KLEIN, E., MARTÍNEZ CATALÁN, J.R., ORTEGA GIRONÉS, E., DE PABLO MACÍA, J.G. & PEINADO, M. (1986): Tectonostratigraphic units in the complexes with mafic and related rocks of the NW of the Iberian massif. Hercynica II, 2, 87-110.
2. 2O (BASH) system, with petrologic applications. Am. Mineral. 71, 277-300.
3. BATES, R.L. & JACKSON, J.A. (1987): Glossary of Geology (third ed.). American Geological Institute, Alexandria, Virginia.
4. BRADY, J.B. (1977): Metasomatic zones in metamorphic rocks. Geochim. Cosmochim. Acta 41, 113-125.
5. ČERNÝ, P. (1993): Rare-element granitic pegmatites. I. Anatomy and internal evolution of pegmatitic deposits. In Ore Deposit Models (P.A. Sheahan & M.E. Cherry, eds.). Geosci. Can., Reprint Ser. 6, Vol. II, 29-48.
6. _ & SIMPSON, F.M. (1977): The Tanco pegmatite at Bernic Lake, Manitoba. IX. Beryl. Can. Mineral. 15, 489-499.
7. CESARE, B. (1995): Graphite precipitation in C-O-H fluid inclusions: closed system compositional and density changes, and thermobarometric implications. Contrib. Mineral. Petrol. 122, 25-33.
8. CURTIS, C.D. & BROWN, P.E. (1969): The metasomatic development of zoned ultrabasic bodies in Unst, Shetland. Contrib. Mineral. Petrol. 24, 275-292.
9. _ & _ (1971): Trace element behaviour in the zoned metasomatic bodies of Unst, Shetland: Contrib. Mineral. Petrol. 31, 87-93.
10. DIAMOND, L.W. (1990): Fluid inclusion evidence for P-V-T-X evolution of hydrothermal solutions in late-alpine gold-quartz veins at Brusson, Val d'Ayas, northwest Italian Alps. Am. J. Sci. 290, 912-958.
11. 2O system. II. Mixtures from 50 to 1000°C and 0 to 1000 bar. Geochim. Cosmochim. Acta 56, 2619-2631.
12. FERSMAN, A.E. (1929): Geochemische Migration der Elemente. III. Smaragdgruben im Uralgebirge. Abh. z. praktischen Geologie u. Bergwirtschaft 1, 74-116.
13. FRANZ, G., GRUNDMANN, G. & ACKERMAND, D. (1986): Rock forming beryl from a regional metamorphic terrain (Tauern Window, Austria): paragenesis and crystal chemistry. Tschermaks Mineral. Petrogr. Mitt. 35, 167-192.
14. 2O: hydrothermal investigation of the stability of beryl and euclase in the range from 1 to 6 kb and 400 to 800°C. Neues Jahrb. Mineral., Abh. 140, 273-299.
15. _ & SMELIK, E.A. (1995): Zoisite-clinozoisite bearing pegmatites and their importance for decompressional melting in eclogites. Eur. J. Mineral. 7, 1421-1436.
16. GAUPP, R., MÖLLER, P. & MORTEANI, G. (1984): Tantal-Pegmatite. Geologische, petrologische und geochemische Untersuchungen. Monograph Series on Mineral Deposits 23, 124 pp.
17. GRUNDMANN, G. (1983): Die Genese der regional metamorphen, metasomatisch-horizontgebundenen Beryll-Mineralisationen des Habachtales, Land Salzburg, Österreich. Ph.D. thesis, Techn. Universität Berlin, Berlin, Germany.
18. _ (1989): Metamorphic evolution of the Habach Formation. A review. Mitt. österr. geol. Ges. 81, 133-149.
19. _ & MORTEANI, G. (1982): Die Geologie des Smaragdvorkommens im Habachtal (Land Salzburg, Österreich). Archiv f. Lagerstättenforsch. Geol. Bundesanstalt Wien 2, 71-107.
20. _ & _ (1989): Emerald mineralization during regional metamorphism: the Habachtal (Austria) and Leydsdorp (Transvaal, South Africa) deposits. Econ. Geol. 84, 1835-1849.
21. _ & _ (1995): Ein neues Vorkommen von Smaragd, Alexandrit, Rubin und Saphir in einem Topasführenden Phlogopit-Fels von Poona, Cue District, West-Australien. Z. Deutsch. Gemm. Ges. 44/2/3, 11-31.
22. 2 equilibria at low-grade metamorphic conditions. Geology 12, 455-458.
23. KREULEN, R. (1987): Thermodynamic calculations of the C-O-H system applied to fluid inclusions: are fluid inclusions unbiased samples of ancient fluids? Chem. Geol. 61, 59-64.
24. LEITMEIER, H. (1937): Das Smaragdvorkommen im Habachtal in Salzburg und seine Mineralien. Z. Kristallogr. Mineral. Petrol. B 49, 245-368.
25. LENTZ, D.R. & FOWLER, A.D. (1992): A dynamic model for graphic quartz-feldspar intergrowths in granitic pegmatites in the southwestern Grenville Province. Can. Mineral. 30, 571-585.
26. LONDON, D. (1987): Internal differentiation of rare-element pegmatites: effects of boron, phosphorus and fluorine. Geochim. Cosmochim. Acta 51, 403-420.
27. _ (1992): The application of experimental petrology to the genesis and crystallization of granitic pegmatites. Can. Mineral. 30, 499-540.
28. _ & BURT, D.M. (1982): Chemical models for lithium aluminosilicate stabilities in pegmatites and granites. Am. Mineral. 67, 494-509.
29. MARTÍNEZ-CATALÁN, J.R., ARENAS, R., DIAZ GARCÍA, F., RUBIO PASCUAL, F.J., ABATI, J. & MARQUINEZ, J. (1995): Variscan exhumation of a subducted Paleozoic continental margin: the basal units of the Ordenes Complex, Galicia, NW Spain. Tectonics 15, 106-121.
30. MARTIN-IZARD, A., PANIAGUA, A., MOREIRAS, D., ACEVEDO, R.D. & MARCOS-PASCUAL, C. (1995): Metasomatism at a granitic pegmatite - dunite contact in Galicia: the Franqueira occurrence of chrysoberyl (alexandrite), emerald, and phenakite. Can. Mineral. 33, 775-792.
31. NWE, Y.Y. & GRUNDMANN, G. (1990): Evolution of metamorphic fluids in shear zones: the record from the emeralds of Habachtal, Tauern Window, Austria. Lithos 25, 281-304.
32. 2-NaCl system during emerald mineralization at Gravelotte, Murchison Greenstone Belt, northeast Transvaal, South Africa. Geochim. Cosmochim. Acta 57, 89-103.
33. PHILLIPS, A.E. & HESS, H.H. (1936): Metamorphic differentiation at contacts between serpentinite and siliceous country rocks. Am. Mineral. 21, 333-362.
34. RAMBOZ, C., PICHAVANT, M. & WEISBROD, A. (1982): Fluid immiscibility in natural processes: use and misuse of fluid inclusion data. H. Interpretation of fluid inclusion data in terms of immiscibility. Chem. Geol. 37, 29-48.
35. RAPP, R.P., WATSON, E.B. & MILLER, C.F. (1991): Partial melting of amphibolite/eclogite and the origin of Archean trondhjemites and tonalites. Precamb. Res. 51, 1-25.
36. RIBEIRO, A., PEREIRA, E. & DIAS, R. (1990): Structure of Centro-Iberian allochthon in Northern Portugal. In Pre-Mesozoic Geology of Iberia (R.D. Dallmeyer & E. Martínez, eds.). Springer, Berlin, Germany (220-293).
37. SINKANKAS, J. (1989): Emerald and other Beryls. Geoscience Press, Prescott, Arizona.
38. SMITH, J.V. (1982): Phase equilibria of plagioclase. In Feldspar Mineralogy (second edition; P.H. Ribbe, ed.). Rev. Mineral. 2, 223-239.
39. SPEAR, F.S. (1993): Metamorphic Phase Equilibria and Pressure - Temperature - Time Paths. Mineralogical Society of America, Monograph Set., Washington, D.C.
40. ROEDDER, E. (1984): Fluid inclusions. Rev. Mineral. 12.
41. TAYLOR, R.G. (1979): Geology of Tin Deposits. Elsevier, Amsterdam, The Netherlands.
42. TRACY, R.J. & FROST, B.R. (1991): Phase equilibria and thermobarometry of calcareous, ultramafic and mafic rocks, and iron formations. In Contact Metamorphism (D.M. Kerrick, ed.). Rev. Mineral. 26, 207-289.