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Distribution of indium in the Ánimas - Chocaya - Siete Suyos District

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hdl:2117/179198

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Cazorla Martínez, Malena
Gemmrich, Laura
Artiaga Torres, David
Martínez, Álvaro
Mollinedo, Diva
Melgarejo Draper, Joan Carles
Torró Abat, Lisard
Alfonso Abella, María PuraMés informacióMés informacióMés informació
Arce Burgoa, Osvaldo R.
Tarrés Mercader, Marta
Torres Cueva, Belén
Document typeConference lecture
Defense date2019
Rights accessOpen Access
All rights reserved. This work is protected by the corresponding intellectual and industrial property rights. Without prejudice to any existing legal exemptions, reproduction, distribution, public communication or transformation of this work are prohibited without permission of the copyright holder
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Abstract
The Ánimas - Chocaya - Siete Suyos district in SW Bolivia hosts a Bolivian-type polymetallic vein mineralization composed mostly of cassiterite, sphalerite, pyrite, galena, stannite, lead sulfosalts, tin sulfosalts and silver sulfosalts. In addition to base (Zn, Sn, Pb) and precious (Ag) metals, important concentrations of In have been described. Systematic EPMA analyses have revealed that the highest concentrations are found in an early generation of sphalerite (up to 9.66 wt% In) and in stannite (up to 4.11 wt% In). Although In-bearing sphalerites are relatively Fe-rich (mostly between 6.0 and 18.1 mol % FeS), the atomic concentrations of these two elements do not yield any correlation. In contrast, In is positively correlated with Cu mostly along a Cu/In = 1 proportion pointing to a (In3+ + Cu+ ) ¿ 2Zn2+ coupled substitution. A relatively high activity of Cu during the crystallization of In-rich sphalerite is also supported by exsolutions of chalcopyrite and stannite.
Location
1: Animas, Bolívia
CitationCazorla, M. [et al.]. Distribution of indium in the Ánimas - Chocaya - Siete Suyos District. A: SGA Biennial Meeting. "15th Biennal SGA Meeting: Glasgow, Scotland, August 27-30 2019". 2019, p. 1677-1680. 
URIhttp://hdl.handle.net/2117/179198
ISBN978-0-8561-965-0
Publisher versionhttps://www.sga2019glasgow.com/abstract
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