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Resumen del producto
Romero Guadarrama, J.A., A.J., Marmolejo Rodríguez, A., Sánchez González, C., Canet, M., Sánchez Martínez & V.R., Magallanes Ordóñez
(2011).
Geochemistry and mineralogy in sediments influenced by the gold mining district of El Triunfo, Mexico.
Internacional European Geosciences Union General Assembly.
Viena, Austria, Austria, abril 3 - 8, 2011,
13141.
Geochemistry and mineralogy in sediments influenced by the gold mining district of El Triunfo, Mexico
Juan A. Romero Guadarrama, Ana Judith Marmolejo Rodríguez, Alberto Sánchez González, Cales Canet, Martha Sánchez Martínez y Víctor René Magallanes Ordóñez
The mining district El Triunfo (MD-ET) is located in the Southernmost Baja California Peninsula, Mexico. Aproximately 800,000 t of tailings are exposed in open air to seasonal storms and oxidative weathering. The main ore mine are stockwork and disseminated associated to quartz-diorite-tonalite intrusive rocks. The mineralization incluye mainly Au, Ag, Pb, Zn Cu and As. The aims of this study are to assess the mineralogy and geochemistry of sediments from the MD-ET and its influence in surface sediments of the arroyo “Hondo-Las Gallinas El Carrizal” to reach its discharge at the Pacific Ocean. Texturally, surface sediments have unimodal distribution and are mainly sands. Minearlogy was identified by Spectrometric Dispersive Analysis validated by thin sections and grains counting. On the other hand, geochemistry was realized by ICP-MS and ICP-OES and results were validated with reference materials. Mineralogy Results shows the presence of quartz, augite, epidote, hornblendes, anortite, titanite, sphalerite, arsenolite, and muscovite. Normalized enrichment factors indicate severe enrichment of As, Pb, Zn close to the MD-ET. However in superficial sediments close to the discharge to the Pacific Ocean contents were not enriched.
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