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      Geoquímica y mineralogía de la mina La Pava, Muzo- Quípama: implicaciones en la exploración de esmeraldas en Colombia Translated title: Geochemistry and mineralogy of the La Pava mine, Muzo-Quípama: implications for emerald exploration in Colombia

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          Abstract

          Resumen La mina La Pava es parte del distrito esmeraldífero de Muzo-Quípama, Colombia; allí la presencia de esmeraldas se asocia con pelitas de la Formación Muzo. La mineralización es controlada espacialmente por el Anticlinal de La Pava -un pliegue por propagación de falla- y se restringe a zonas que han experimentado intensa alteración hidrotermal (albitización y carbonatización). Los principales rasgos observados en las venas productivas son las asociaciones paragenéticas de albita-xenotimo-fluorapatito y calcita-dolomita, los cuales van acompañados de anomalías geoquímicas positivas de Y, P, Mn y Mg. Adicionalmente, se presentan anomalías negativas de Li-Cs-Be-Ti que representan indicadores consistentes de la lixiviación de estos elementos en las rocas y su posterior concentración en venas y brechas hidrotermales. Se concluye que en La Pava existen parámetros estructurales, estratigráficos, mineralógicos y geoquímicos que permiten identificar bloques potenciales para hospedar mineralizaciones de esmeraldas.

          Translated abstract

          Abstract The La Pava mine is located in the Muzo-Quípama district, Colombia; there, the emeralds are hosted by pelites from the Muzo Formation. The mineralization is spatially associated with the La Pava Anticline -a fault- propagation fold- and restricted to strongly altered zones (albitized and carbonatized). The main features displayed by the fertile veins are the mineral assemblages that include albite-xenotime-fluorapatite and calcite- dolomite, and their corresponding positive geochemical anomalies: Y, P, Mn, and Mg. Moreover, there is a consistent negative anomaly of Li-Cs-Be-Ti, which means these elements were effectively leached from the host rocks and subsequently concentrated as infill products in the hydrothermal veins. As a concluding remark, we identified a sort of parameters, regarding structures, stratigraphy, mineralogy, and geochemistry, that can be useful in defining exploration targets for emerald deposits.

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          Most cited references51

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          Emerald deposits and occurrences: A review

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            Emeralds in the Eastern Cordillera of Colombia: Two tectonic settings for one mineralization

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              Magmatic evolution of the Andean Eastern Cordillera of Colombia during the Cretaceous: Influence of previous tectonic processes

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                Author and article information

                Journal
                boge
                Boletín de Geología
                Bol. geol.
                Universidad Industrial de Santander (Bucaramanga, Santander, Colombia )
                0120-0283
                2145-8553
                August 2021
                : 43
                : 2
                : 117-142
                Affiliations
                [1] Bogotá orgnameUniversidad Nacional de Colombia Colombia
                [2] Bogotá Arauca orgnameUniversidad Nacional de Colombia Colombia gbonilla@ 123456inclaygeology.com
                Article
                S0120-02832021000200117 S0120-0283(21)04300200117
                10.18273/revbol. v43n2-2021007
                e7d5f11c-442c-45ca-87e3-7cb7a77438e9

                This work is licensed under a Creative Commons Attribution 4.0 International License.

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                Figures: 0, Tables: 0, Equations: 0, References: 54, Pages: 26
                Product

                SciELO Colombia

                Categories
                Artículos científicos

                Emeralds,Esmeraldas,Exploración geoquímica,Formación Muzo,Colombia.,Geochemical exploration,Muzo formation

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