Persistent Link:
http://hdl.handle.net/10150/578789
Title:
Assessing Mineral Potential in Bolivia; Phase I
Author:
Cardwell, Justin Nathaniel
Issue Date:
2006
Publisher:
The University of Arizona.
Rights:
Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
Abstract:
Bolivia, located in the west-central part of South America, has extracted only a small amount of its total economic mineral potential, making it an ideal place for economic opportunity. The Bolivian Tin Belt, for example, contains some of the world’s largest Sn/Ag porphyry granite systems in the world. Sinchi Wayra, S. A., Emicruz LTD, Comsur, Zonge, Engineering and Sander Geophysics LTD provided LandsatTM, geochemical and geophysical data in hopes of determining phase I locations for potential economic mineral extraction. This work is the initial stage of more desktop studies and field work. Unreliability in ratioing of the LandsatTM images reduced the number of indices that could be created. Layer stacking of LandsatTM images from the Potosi region (in the red, green and blue of clay, ferrous minerals and iron oxides respectively) revealed a few areas of high iron content (moderate adjacent clay minerals) that deserved further attention. Only a few ratio images coincided with areas of sufficient rock chip sampling. However, in all cases, the ratio images matched the described alteration (from rock chip sampling). Geochemical data revealed two locations of economic mineralization and fourteen other locations with enough potential for further study. Most of the areas of mineral potential are located within or adjacent to the Bolivian Tin Belt, in the central and southern portions of the Eastern Cordillera, and show anomalous values of As, Bi, Sb, Ag, Sn, Pb, Zn, W, Cu and/or Au. The majority of these mineral occurrences are epithermal polymetallic vein deposits related to felsic or intermediate porphyrytic/equigranular intrusions. Radiometric data revealed at least one major site of interest with elevated U and Th values near the Boliva-Brazil border. Several other anomalies (based on airborne magnetics) revealed strong dipoles in eastern Potosi and in southeastern Bolivia.
Type:
text; Electronic Thesis
Degree Name:
M.S.
Degree Level:
masters
Degree Program:
Graduate College; Mining, Geological & Geophysical Engineering
Degree Grantor:
University of Arizona
Advisor:
Poulton, Mary

Full metadata record

DC FieldValue Language
dc.language.isoen_USen
dc.titleAssessing Mineral Potential in Bolivia; Phase Ien_US
dc.creatorCardwell, Justin Nathanielen
dc.contributor.authorCardwell, Justin Nathanielen
dc.date.issued2006en
dc.publisherThe University of Arizona.en
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.en
dc.description.abstractBolivia, located in the west-central part of South America, has extracted only a small amount of its total economic mineral potential, making it an ideal place for economic opportunity. The Bolivian Tin Belt, for example, contains some of the world’s largest Sn/Ag porphyry granite systems in the world. Sinchi Wayra, S. A., Emicruz LTD, Comsur, Zonge, Engineering and Sander Geophysics LTD provided LandsatTM, geochemical and geophysical data in hopes of determining phase I locations for potential economic mineral extraction. This work is the initial stage of more desktop studies and field work. Unreliability in ratioing of the LandsatTM images reduced the number of indices that could be created. Layer stacking of LandsatTM images from the Potosi region (in the red, green and blue of clay, ferrous minerals and iron oxides respectively) revealed a few areas of high iron content (moderate adjacent clay minerals) that deserved further attention. Only a few ratio images coincided with areas of sufficient rock chip sampling. However, in all cases, the ratio images matched the described alteration (from rock chip sampling). Geochemical data revealed two locations of economic mineralization and fourteen other locations with enough potential for further study. Most of the areas of mineral potential are located within or adjacent to the Bolivian Tin Belt, in the central and southern portions of the Eastern Cordillera, and show anomalous values of As, Bi, Sb, Ag, Sn, Pb, Zn, W, Cu and/or Au. The majority of these mineral occurrences are epithermal polymetallic vein deposits related to felsic or intermediate porphyrytic/equigranular intrusions. Radiometric data revealed at least one major site of interest with elevated U and Th values near the Boliva-Brazil border. Several other anomalies (based on airborne magnetics) revealed strong dipoles in eastern Potosi and in southeastern Bolivia.en
dc.typetexten
dc.typeElectronic Thesisen
thesis.degree.nameM.S.en
thesis.degree.levelmastersen
thesis.degree.disciplineGraduate Collegeen
thesis.degree.disciplineMining, Geological & Geophysical Engineeringen
thesis.degree.grantorUniversity of Arizonaen
dc.contributor.advisorPoulton, Maryen
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