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Burkeite and hanksite at Copahue, Argentina: the first occurrence of sulphate-carbonate minerals in a geothermal field

Published online by Cambridge University Press:  05 July 2018

G. R. Mas ,
L. Bengochea  and
L. C. Mas
G. R. Mas*
Affiliation:
Departamento de Geología, Universidad Nacional del Sur, CONICET, San Juan 670, 8000 Bahía Blanca, Argentina
L. Bengochea
Affiliation:
Departamento de Geología, Universidad Nacional del Sur, CONICET, San Juan 670, 8000 Bahía Blanca, Argentina
L. C. Mas
Affiliation:
Ente Provincial de Energía de Neuquén, Argentina
*
E-mail: [email protected]
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Abstract

Deposition of two anhydrous sulphate-carbonate minerals, burkeite and hanksite, around a vapour escape in the pipe of a geothermal well of the Copahue field in Argentina is described. These minerals usually occur as efflorescences in saline soils or in continental lacustrine evaporite deposits, but have not been reported as products from geothermal fluids. Both minerals have been studied by means of X-ray diffraction, scanning electron microscopy and electron dispersive energy, and thermo-gravimetric analysis, and have been determined as burkeite, Na6(CO3)(SO4)2, and hanksite, KNa22(SO4)9(CO3)2Cl.

Keywords

burkeitehanksiteCopahueArgentinageothermal
Type
Research Article
Information
Mineralogical Magazine , Volume 71 , Issue 2 , April 2007 , pp. 235 - 240
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 2007

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References

Anthony, J.W., Bideaux, R.A., Blath, K.W. and Nichols, M.C. (2003) Handbook of Mineralogy. Vol. V: Borates,Ca rbonates, Sulfates. Mineral Data Publishing. Tucson, Arizona, USA, 813 pp.Google Scholar
ICDD (1993) Mineral Powder Diffraction File, Data Book & Search Manual. ICDD, Newtown Square, Pennsylvania, USA. 780 pp.Google Scholar
JICA-EPEN (1992) The feasibility study on the Northern Neuquén Geothermal Development Project. Final Report. Japan International Cooperation Agency.Google Scholar
Mackenzie, R.C. (editor) (1982) Differential Thermal Analysis. Vol. 1. Fundamental Aspects. Academic Press. London & New York, 775 pp.Google Scholar
Mas, L.C. (1993) El Campo Geotérmico Copahue: Los minerales de alteraciòn y las inclusiones fluidas como indicadores fisico-químicos del sistema. Tesis Doctoral, Biblioteca Central Universidad Nacional del Sur, Bahía Blanca, Argentina.Google Scholar
Mas, G.R., Mas, L.C. and Bengochea, L. (1996) Alteraciòn acido-sulfática en el Campo Geotérmico Copahue, Provincia de Neuquén, Argentina. Revista de la Asociaciòn Geològica Argentina, 51, 78–86.Google Scholar
Mas, L.C., Mas, G. and Bengochea, L. (2000) The heat flow distribution and its relation with the tectonic scheme of the Copahue Geothermal Field. World Geothermal Congress 2000,Japan, 419–424.Google Scholar
Palache, C., Berman, H., and Frondel, C. (1951) Dana's System of Mineralogy (7th Edition),v. II, 633–634. J. Wiley & Sons, Inc., New York.Google Scholar
Panarello, H.O. (2002) Características isotòpicas y termodinámicas de reservorio del campo geotérmico Copahue-Caviahue, Provincia de Neuqué n, Argentina. Revista de la Asociaciòn Geològica Argentina, 57, 182–194.Google Scholar
Shi, B. and Rousseau, R.W. (2003) Structure of burkeite and a new crystalline species obtained from solutions of sodium carbonate and sodium sulphate. Journal of Physical Chemistry B, 107, 6932–6937.CrossRefGoogle Scholar