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Abstract:

Pyrite framboids have been recognized in fumaroles on Deception Island, Antarctica. The sulphide was deposited around reworked pyroclastic tephra (lapilli). The formation process starts as a reaction between glass and hydrogen sulphide, giving rise to nucleation and growth of iron monosulfide microcrystals. The microcrystals then convert to greigite, and form aggregates of uniformly sized microcrystals (development of framboids). Finally, greigite is replaced by pyrite. In this study pyrite was observed forming at 100°C in less than one hour. © 2004 Asociación Geológica Argentina.

Registro:

Documento: Artículo
Título:Framboidal pyrite in fumaroles on Deception Island (Antarctica): Genetic implications
Autor:Agusto, M.R.; Caselli, A.T.; dos Santos Afonso, M.
Filiación:Dpto. Cs. Geológicas, Facultad Ciencias Exactas Naturales, UBA, Pab. 2, C.P. 1428 Nuñez Buenos Aires, Argentina
INQUIMAE, Facultad Ciencias Exactas Naturales, UBA, Pab. 2, C.P. 1428 Nuñez Buenos Aires, Argentina
Palabras clave:Antarctica; Deception Island; Framboids; Fumarole; Pyrite; crystallization; greigite; massive sulfide; pyrite; Antarctica; Arctic and Antarctic; Deception Island; South Shetland Islands; World
Año:2004
Volumen:59
Número:1
Página de inicio:152
Página de fin:157
Título revista:Revista de la Asociacion Geologica Argentina
Título revista abreviado:Rev. Asoc. Geol. Argent.
ISSN:00044822
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v59_n1_p152_Agusto

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Citas:

---------- APA ----------
Agusto, M.R., Caselli, A.T. & dos Santos Afonso, M. (2004) . Framboidal pyrite in fumaroles on Deception Island (Antarctica): Genetic implications . Revista de la Asociacion Geologica Argentina, 59(1), 152-157.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v59_n1_p152_Agusto [ ]
---------- CHICAGO ----------
Agusto, M.R., Caselli, A.T., dos Santos Afonso, M. "Framboidal pyrite in fumaroles on Deception Island (Antarctica): Genetic implications " . Revista de la Asociacion Geologica Argentina 59, no. 1 (2004) : 152-157.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v59_n1_p152_Agusto [ ]
---------- MLA ----------
Agusto, M.R., Caselli, A.T., dos Santos Afonso, M. "Framboidal pyrite in fumaroles on Deception Island (Antarctica): Genetic implications " . Revista de la Asociacion Geologica Argentina, vol. 59, no. 1, 2004, pp. 152-157.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v59_n1_p152_Agusto [ ]
---------- VANCOUVER ----------
Agusto, M.R., Caselli, A.T., dos Santos Afonso, M. Framboidal pyrite in fumaroles on Deception Island (Antarctica): Genetic implications . Rev. Asoc. Geol. Argent. 2004;59(1):152-157.
Available from: https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v59_n1_p152_Agusto [ ]