Mineralogy and fluid inclusion of La Baritina: The uppermost sector of the manganese mineralization of sierra de Ambargasta, province of Córdoba
In this paper the mineralogy and fluid inclusion of the upper sector of an epithermal manganese deposit are described. The study area comprises the central sector of a bigger mineralised zone where non-ore mineral are the most common ones and are composed of barite, calcite and opal with fewer amoun...
| Autores principales: | , |
|---|---|
| Formato: | Artículo publishedVersion |
| Publicado: |
2009
|
| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_00044822_v64_n4_p672_Leal https://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_00044822_v64_n4_p672_Leal_oai |
| Aporte de: |
| id |
I28-R145-paper_00044822_v64_n4_p672_Leal_oai |
|---|---|
| record_format |
dspace |
| spelling |
I28-R145-paper_00044822_v64_n4_p672_Leal_oai2024-08-16 Leal, P.R. González, M.P. 2009 In this paper the mineralogy and fluid inclusion of the upper sector of an epithermal manganese deposit are described. The study area comprises the central sector of a bigger mineralised zone where non-ore mineral are the most common ones and are composed of barite, calcite and opal with fewer amounts of chalcedony, quartz and manganese oxides. Their textures and their assemblages allow us to determine several events of precipitation. The open spaces between barite crystals were filled by calcite and opal which are commoner species toward the end of the mineralization process. Chalcedony and quartz only occur inside a few small cavities. Fluid inclusions were studied in barite, calcite and quartz samples. They are composed of H 2O, NaCl and fewer amounts of CaCl 2 and MgCl 2. Calcite and barite samples have an average salinity of about 4.18 %wt NaCleq., meanwhile quartz evidences salinities around 5.26%wt NaCleq. Homogenization temperatures are also different for each species: quartz shows an average temperature of about 148°C, meanwhile barite and calcite seem to be a little higher (184° and 171°C respectively). All the data compiled in this paper suggest that this district represents one of the uppermost sectors of the ore deposit. The high amount of non-ore minerals evidences that this area, in contrast with the others ones, was especially active during the end of the mineralization process. Fil:Leal, P.R. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:González, M.P. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. application/pdf http://hdl.handle.net/20.500.12110/paper_00044822_v64_n4_p672_Leal info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar Rev. Asoc. Geol. Argent. 2009;64(4):672-684 Ambargasta Barite Córdoba Manganese barite calcite epithermal deposit fluid inclusion manganese manganese oxide mineralization mineralogy opal ore deposit precipitation (chemistry) zoning Argentina Cordoba [Argentina] Santiago del Estero [Argentina] Sierra de Ambargasta Sierras Pampeanas Mineralogy and fluid inclusion of La Baritina: The uppermost sector of the manganese mineralization of sierra de Ambargasta, province of Córdoba info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion https://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_00044822_v64_n4_p672_Leal_oai |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-145 |
| collection |
Repositorio Digital de la Universidad de Buenos Aires (UBA) |
| topic |
Ambargasta Barite Córdoba Manganese barite calcite epithermal deposit fluid inclusion manganese manganese oxide mineralization mineralogy opal ore deposit precipitation (chemistry) zoning Argentina Cordoba [Argentina] Santiago del Estero [Argentina] Sierra de Ambargasta Sierras Pampeanas |
| spellingShingle |
Ambargasta Barite Córdoba Manganese barite calcite epithermal deposit fluid inclusion manganese manganese oxide mineralization mineralogy opal ore deposit precipitation (chemistry) zoning Argentina Cordoba [Argentina] Santiago del Estero [Argentina] Sierra de Ambargasta Sierras Pampeanas Leal, P.R. González, M.P. Mineralogy and fluid inclusion of La Baritina: The uppermost sector of the manganese mineralization of sierra de Ambargasta, province of Córdoba |
| topic_facet |
Ambargasta Barite Córdoba Manganese barite calcite epithermal deposit fluid inclusion manganese manganese oxide mineralization mineralogy opal ore deposit precipitation (chemistry) zoning Argentina Cordoba [Argentina] Santiago del Estero [Argentina] Sierra de Ambargasta Sierras Pampeanas |
| description |
In this paper the mineralogy and fluid inclusion of the upper sector of an epithermal manganese deposit are described. The study area comprises the central sector of a bigger mineralised zone where non-ore mineral are the most common ones and are composed of barite, calcite and opal with fewer amounts of chalcedony, quartz and manganese oxides. Their textures and their assemblages allow us to determine several events of precipitation. The open spaces between barite crystals were filled by calcite and opal which are commoner species toward the end of the mineralization process. Chalcedony and quartz only occur inside a few small cavities. Fluid inclusions were studied in barite, calcite and quartz samples. They are composed of H 2O, NaCl and fewer amounts of CaCl 2 and MgCl 2. Calcite and barite samples have an average salinity of about 4.18 %wt NaCleq., meanwhile quartz evidences salinities around 5.26%wt NaCleq. Homogenization temperatures are also different for each species: quartz shows an average temperature of about 148°C, meanwhile barite and calcite seem to be a little higher (184° and 171°C respectively). All the data compiled in this paper suggest that this district represents one of the uppermost sectors of the ore deposit. The high amount of non-ore minerals evidences that this area, in contrast with the others ones, was especially active during the end of the mineralization process. |
| format |
Artículo Artículo publishedVersion |
| author |
Leal, P.R. González, M.P. |
| author_facet |
Leal, P.R. González, M.P. |
| author_sort |
Leal, P.R. |
| title |
Mineralogy and fluid inclusion of La Baritina: The uppermost sector of the manganese mineralization of sierra de Ambargasta, province of Córdoba |
| title_short |
Mineralogy and fluid inclusion of La Baritina: The uppermost sector of the manganese mineralization of sierra de Ambargasta, province of Córdoba |
| title_full |
Mineralogy and fluid inclusion of La Baritina: The uppermost sector of the manganese mineralization of sierra de Ambargasta, province of Córdoba |
| title_fullStr |
Mineralogy and fluid inclusion of La Baritina: The uppermost sector of the manganese mineralization of sierra de Ambargasta, province of Córdoba |
| title_full_unstemmed |
Mineralogy and fluid inclusion of La Baritina: The uppermost sector of the manganese mineralization of sierra de Ambargasta, province of Córdoba |
| title_sort |
mineralogy and fluid inclusion of la baritina: the uppermost sector of the manganese mineralization of sierra de ambargasta, province of córdoba |
| publishDate |
2009 |
| url |
http://hdl.handle.net/20.500.12110/paper_00044822_v64_n4_p672_Leal https://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_00044822_v64_n4_p672_Leal_oai |
| work_keys_str_mv |
AT lealpr mineralogyandfluidinclusionoflabaritinatheuppermostsectorofthemanganesemineralizationofsierradeambargastaprovinceofcordoba AT gonzalezmp mineralogyandfluidinclusionoflabaritinatheuppermostsectorofthemanganesemineralizationofsierradeambargastaprovinceofcordoba |
| _version_ |
1809356947596509184 |