Insights on the effects of the hydrothermal alteration in the El Laco magnetite deposit (Chile)

Congreso SEM-SEA 2012, reunión conjunta de las sociedades españolas de Mineralogía (XXXII Reunión) y Arcillas (XXII Reunión), celebrado en Bilbao entre el 27 y 30 de Junio de 2012 The understanding of the origin of the recent (ca. 2 Ma) El Laco deposit (Fig. 1), with near 1 Gt of almost pure magneti...

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Main Authors: Velasco, Francisco, Tornos, F.
Other Authors: Eusko Jaurlaritza
Format: Article in Journal/Newspaper
Language:English
Published: Sociedad Española de Mineralogía 2012
Subjects:
Online Access:http://hdl.handle.net/10261/276783
https://doi.org/10.13039/501100003086
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spelling ftcsic:oai:digital.csic.es:10261/276783 2024-02-11T10:05:33+01:00 Insights on the effects of the hydrothermal alteration in the El Laco magnetite deposit (Chile) Velasco, Francisco Tornos, F. Eusko Jaurlaritza El Laco, Chile 2012 http://hdl.handle.net/10261/276783 https://doi.org/10.13039/501100003086 en eng Sociedad Española de Mineralogía #PLACEHOLDER_PARENT_METADATA_VALUE# CGL2011-23207 IT340-10 http://www.ehu.eus/sem/macla_pdf/macla16/Macla16_210.pdf Macla, n.16, 210-211 2659-9864 http://hdl.handle.net/10261/276783 http://dx.doi.org/10.13039/501100003086 open El Laco yacimiento magnetita alteración hidrotermal Chile magnetite deposit hydrothermal alteration artículo 2012 ftcsic https://doi.org/10.13039/501100003086 2024-01-16T11:27:41Z Congreso SEM-SEA 2012, reunión conjunta de las sociedades españolas de Mineralogía (XXXII Reunión) y Arcillas (XXII Reunión), celebrado en Bilbao entre el 27 y 30 de Junio de 2012 The understanding of the origin of the recent (ca. 2 Ma) El Laco deposit (Fig. 1), with near 1 Gt of almost pure magnetite/hematite, is considered critical for the interpretation of the Kiruna type magnetite-apatite style of mineralization, an end-member of the IOCG group of deposits. Despite the abundant studies conducted in the last decades on El Laco, with little erosion, well preserved volcanic features and excellent conditions of exposure, there is no agreement between models that support a genesis related to the hydrothermal replacement of preexisting andesitic rocks (Rhodes & Oreskes, 1999; Rhodes et al., 1999) and those which interpret the deposit as magmatic flows and dikes product of the crystallization of an iron oxide melt (Frutos & Oyarzun, 1975; Nyström & Henríquez, 1994; Naslund et al., 2002; Henríquez et al., 2003; Tornos et al., 2011). To solve this fascinating controversy is crucial to understand the problem from a global point of view, integrating geological and geochemical data of the magmatic and hydrothermal rocks present in the area Departamento de Mineralogía y Petrología, Universidad del País Vasco, España Instituto Geológico y Minero de España, España Article in Journal/Newspaper Kiruna Digital.CSIC (Spanish National Research Council) Kiruna
institution Open Polar
collection Digital.CSIC (Spanish National Research Council)
op_collection_id ftcsic
language English
topic El Laco
yacimiento magnetita
alteración hidrotermal
Chile
magnetite deposit
hydrothermal alteration
spellingShingle El Laco
yacimiento magnetita
alteración hidrotermal
Chile
magnetite deposit
hydrothermal alteration
Velasco, Francisco
Tornos, F.
Insights on the effects of the hydrothermal alteration in the El Laco magnetite deposit (Chile)
topic_facet El Laco
yacimiento magnetita
alteración hidrotermal
Chile
magnetite deposit
hydrothermal alteration
description Congreso SEM-SEA 2012, reunión conjunta de las sociedades españolas de Mineralogía (XXXII Reunión) y Arcillas (XXII Reunión), celebrado en Bilbao entre el 27 y 30 de Junio de 2012 The understanding of the origin of the recent (ca. 2 Ma) El Laco deposit (Fig. 1), with near 1 Gt of almost pure magnetite/hematite, is considered critical for the interpretation of the Kiruna type magnetite-apatite style of mineralization, an end-member of the IOCG group of deposits. Despite the abundant studies conducted in the last decades on El Laco, with little erosion, well preserved volcanic features and excellent conditions of exposure, there is no agreement between models that support a genesis related to the hydrothermal replacement of preexisting andesitic rocks (Rhodes & Oreskes, 1999; Rhodes et al., 1999) and those which interpret the deposit as magmatic flows and dikes product of the crystallization of an iron oxide melt (Frutos & Oyarzun, 1975; Nyström & Henríquez, 1994; Naslund et al., 2002; Henríquez et al., 2003; Tornos et al., 2011). To solve this fascinating controversy is crucial to understand the problem from a global point of view, integrating geological and geochemical data of the magmatic and hydrothermal rocks present in the area Departamento de Mineralogía y Petrología, Universidad del País Vasco, España Instituto Geológico y Minero de España, España
author2 Eusko Jaurlaritza
format Article in Journal/Newspaper
author Velasco, Francisco
Tornos, F.
author_facet Velasco, Francisco
Tornos, F.
author_sort Velasco, Francisco
title Insights on the effects of the hydrothermal alteration in the El Laco magnetite deposit (Chile)
title_short Insights on the effects of the hydrothermal alteration in the El Laco magnetite deposit (Chile)
title_full Insights on the effects of the hydrothermal alteration in the El Laco magnetite deposit (Chile)
title_fullStr Insights on the effects of the hydrothermal alteration in the El Laco magnetite deposit (Chile)
title_full_unstemmed Insights on the effects of the hydrothermal alteration in the El Laco magnetite deposit (Chile)
title_sort insights on the effects of the hydrothermal alteration in the el laco magnetite deposit (chile)
publisher Sociedad Española de Mineralogía
publishDate 2012
url http://hdl.handle.net/10261/276783
https://doi.org/10.13039/501100003086
op_coverage El Laco, Chile
geographic Kiruna
geographic_facet Kiruna
genre Kiruna
genre_facet Kiruna
op_relation #PLACEHOLDER_PARENT_METADATA_VALUE#
CGL2011-23207
IT340-10
http://www.ehu.eus/sem/macla_pdf/macla16/Macla16_210.pdf
Macla, n.16, 210-211
2659-9864
http://hdl.handle.net/10261/276783
http://dx.doi.org/10.13039/501100003086
op_rights open
op_doi https://doi.org/10.13039/501100003086
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