CURRICULUM VITAE LUIS FERNANDO BARRA PANTOJA OFFICE ...

CURRICULUM VITAE
LUIS FERNANDO BARRA PANTOJA
OFFICE ADDRESS Universidad de Chile
Facultad de Ciencias Físicas y Matemáticas
Departamento de Geología
Plaza Ercilla #803
Casilla 13518 Correo 21, Santiago, Chile
Phone: 56-2-9784532
Email: fbarrapantoja@ing.uchile.cl
CITIZENSHIP: Chilean
EDUCATION
B.Sc. (Honors) Geology Universidad de Concepción, Concepción, Chile – 1996.
Thesis title: “Estudio petrográfico de serpentinitas y mineralógico de cromitas del área de La
Cabaña, Provincia de Cautín, IX Región, Chile”. Departamento de Ciencias de la Tierra,
Universidad de Concepción, Concepción, Chile. 183 pp.
M.S. Geology The University of Arizona, Tucson, Arizona – 2001
Thesis title: “A Re-Os study of sulfide minerals from the Bagdad porphyry Cu-Mo deposit,
northern Arizona, USA”. Department of Geosciences, The University of Arizona, Arizona,
USA. 29 pp.
Ph. D. Geology The University of Arizona, Tucson, Arizona – 2005
Thesis title: “Applications of the Re-Os isotopic system to the study of mineral deposits:
Geochronology and source of metals”. Department of Geosciences, The University of Arizona,
Arizona, USA. 211 pp.
PROFESSIONAL EMPLOYMENT
1. Associate Professor Departamento de Geología, Universidad de Chile, 2010-present
2. Research Associate: Applications of multicollector ICP-MS to geosciences, mainly U-Pb
geochronology of zircon and rutile. The University of Arizona, 2009
3. Research Associate: Geochronology of mineral deposits, applications of the Re-Os isotopes in
geoscience, stable isotope studies of transition metal elements, lead isotopes applications to
environmental studies, The University of Arizona, 2005-2009
4. Graduate Research Assistant (Application of Re-Os isotopes to mineral deposits research, Ar/Ar
dating of lunar samples), The University of Arizona, 2000-2004
5. Graduate Teaching Assistant (courses include: A Geological Perspective (NATS 101), Life on
Earth (NATS 104), Introduction to Oceanography (GEOS 212), Introduction to Geochemistry
(GEOS 400/500)) The University of Arizona, 2000-2004

6. Assistant Professor, Instituto de Geologia Economica Aplicada (GEA), Universidad de
Concepción, Concepción, Chile, 1998-1999
7. Mine Geologist, Cia. Minera Doña Inés de Collahuasi, Iquique, Chile, 01/98-03/98.
8. Lecturer (Economic Geology - senior undergraduate courses), Universidad de Concepción,
Concepción, Chile, 1993-1998
9. Exploration Geologist, Cia. Cementos Bio-Bio S.A., Chile, 01/1993-03/1993
10. Teaching Assistant (mineralogy, optical mineralogy, igneous petrology), Universidad de
Concepción, Concepción, Chile, 1990-1993
COURSES
1. Instructor UNESCO-SEG-SGA Latin American Metallogeny Course. Metallogeny of Magmato-
Hydrothermal Processes. Antofagasta, Chile. June 6-16, 2006.
2. International coordinator and Instructor UNESCO-SEG-SGA Latin American Metallogeny
Course. La Paz, Bolivia, August 19-28, 2008.
3. Instructor “Curso de Geocronologia y Termocronologia de Depositos Minerales”. Instituto
GEA-Universidad de Concepcion. Santiago, Chile September 2-3, 2008.
4. Instructor UNESCO-SEG-SGA Latin American Metallogeny Course. Metallogenesis and Gold
and Iron Mineral Deposits from the Cuadrilatero Ferrifero, Brazil, May 19-26, 2009.
5. Instructor “Curso de Geocronologia y Termocronologia de Depositos Minerales”. Instituto
GEA-Universidad de Concepcion. Concepción, Chile, June, 2009.
6. Instructor “Curso de Geocronología e Isotopía Aplicada” Masters in Economic Geology-
Mineral Exploration program, Universidad Católica del Norte-CODELCO, Antofagasta, Chile.
April 12-15, 2010.
ACOMPLISHMENTS AND AWARDS
1. Graduate with Honors B.Sc. Degree, Departamento de Ciencias de la Tierra, Universidad de
Concepción, Concepción, Chile 1996
2. Wesley Peirce Scholarship, Department of Geosciences, University of Arizona, Tucson,
Arizona, USA 2000
3. Stephen Enders Award for best Economic Geology talk, Geodaze 2001, Department of
Geosciences, University of Arizona, Tucson, Arizona, USA.
4. Stephen Enders Award for best Economic Geology talk, Geodaze 2003, Department of
Geosciences, University of Arizona, Tucson, Arizona, USA.
5. Award for best student presentation “XIII Congreso Nacional de Geoquimica”, September 22-26
2003, Juriquilla, Queretaro, Mexico.
6. David Lowell Fellowship, Department of Geosciences, University of Arizona, Tucson, Arizona,
USA 2001-2004.
7. Associate editor for Mineralium Deposita (2008- ).
8. Reviewer for Chemical Geology, International Journal of Earth Sciences, Mineralium Deposita
PROFESSIONAL SOCIETIES

Member, Society for Geology Applied to Mineral Deposits
RESEARCH ACTIVITIES:
Main research lines:
1. Economic Geology
2. Geochemistry - Isotope Geochemistry
3. Geochronology
RESEARCH PROJECTS:
TITLE: The Serpentinite Belt of Southern Coastal Range of Chile: Structural, Petrogenetic and
Metallogenic Chracteristics.
ORGANIZATION: Universidad de Concepción, Chile
FUNDING: Volkswagen - Stiftung
DURATION 1993-1996
PRINCIPAL INVESTIGADOR: Dr. Guillermo Alfaro (Univ. de Concepción, Chile).
TITLE: Geología, Mineralogía y Geoquímica del Distrito Aurífero Chancón, VI Región.
ORGANIZATION: Universidad de Concepción, Chile.
FUNDING: Dirección de Investigación - Universidad de Concepción, Chile.
DURATION: 1999-2000
PRINCIPAL INVESTIGADOR: Dr. Fernando Barra (Univ. de Concepción, Chile).
TITLE: Re-Os Studies of Ore Deposits
ORGANIZATION: University of Arizona, USA.
FUNDING: NSF
DURATION: 1998-2001
PRINCIPAL INVESTIGADOR: Dr. Joaquín Ruiz (Univ. of Arizona, USA).
TITLE:Ar/Ar dating of lunar samples.
ORGANIZATION: University of Arizona, USA.
FUNDING: NASA, USA.
DURATION: 2001-2003
PRINCIPAL INVESTIGADOR: Dr. Tim Swindle (Univ. of Arizona, USA).
TITLE: Re-Os systematics from the Platreef deposit, South Africa
ORGANIZATION: University of Arizona, USA.
DURATION: 2002-2005
PRINCIPAL INVESTIGADOR: Dr. Lewis Ashwal (Witswatersrand University, South Africa)
TITLE: Génesis de los pórfidos cupríferos del distrito de Collahuasi: una interrogante metalogénica
ORGANIZATION: Universidad de Chile
FUNDING: FONDECYT, Proyecto n° 1030912
DURATION: 2003-2006
PRINCIPAL INVESTIGADOR: Dr. Francisco Munizaga (Univ. de Chile, Chile)

TITLE: Metallogeny of Cretaceous Cu-Mo Porphyry Systems of the Coastal Cordillera of the Atacama
and Coquimbo Regions of Northern Chile (26°-31°S)
ORGANIZATION: Universidad de Chile
FUNDING: FONDECYT, Proyecto n° 1040492
DURATION: 2004-2007
PRINCIPAL INVESTIGADOR: Dr. Victor Maksaev (Univ. de Chile, Chile)
TITLE: Determination of source of metals and age of IOCG type deposits in Chile.
ORGANIZATION: University of Arizona, USA.
FUNDING: Codelco-Chile
DURATION DESDE: 2005-2008
PRINCIPAL INVESTIGADOR: Dr. Murray Hitzman – Dr. Klaus Heppe (Colorado School of Mines,
USA).
TITLE: Origin of Colombian emeralds
ORGANIZATION: Universidad de Santander, Colombia
DURATION: 2006-2010
PRINCIPAL INVESTIGADOR: Luis Carlos Mantilla (Univ. de Santander, Colombia)
TITLE: Re-Os molybdenite dating of the Hauraki goldfield, New Zeland
ORGANIZATION: University of Arizona, USA.
DURATION: 2007-2009
PRINCIPAL INVESTIGADOR: Dr. Jeff Mauk (Aukland Univ., New Zeland)
TITLE: Re-Os systematics in some gold deposits from Nevada.
ORGANIZATION: University of Arizona, USA.
DURATION: 2008-2009
PRINCIPAL INVESTIGADOR: Dr. George Kamenov (Univ. of Florida, USA)
TITLE: Timing of porphyry copper mineralization in the Toki district, Chile.
ORGANIZATION: University of Arizona, USA.
FUNDING: Codelco-Chile
DURATION: 2008-2009
PRINCIPAL INVESTIGADOR: Dr. Fernando Barra (Univ. of Arizona, USA)
TITLE: Re-Os dating of bitumen from LaBarge, Wyoming
ORGANIZATION: University of Arizona, USA.
FUNDING: Exxon Mobil
DURATION: 2008-2009
PRINCIPAL INVESTIGADOR: Dr. Joaquín Ruiz (Univ. de Arizona, USA)
TITLE: Record of the Miocene uplift of the Principal Cordillera based on geochemical and
mineralogical characteristics of syntectonic deposits, Chile and Argentina (32-34S)
ORGANIZATION: FONDECYT, Proyecto n° 1090165
DURATION: 2009-2011
PRINCIPAL INVESTIGADOR: Dra. Luisa Pinto (Univ. de Chile, Chile)

TITLE: Re-Os dating of sulfides from the Zambian Copperbelt.
ORGANIZATION: University of Arizona, USA.
FUNDING: AMIRA.
DURATION: 2002-2005
PRINCIPAL INVESTIGADOR: Dr. Murray Hitzman – Dave Broughton (Colorado School of Mines,
USA).
TITLE: Re-Os analyses on chalcocite from a manto-type deposit in Chile.
ORGANIZATION: University of Arizona.
FUNDING: University of Arizona
DURATION DESDE: 2004
PRINCIPAL INVESTIGADOR: Dr. Shoji Kojima (Univ. Católica del Norte) – Dr. Diego Morata
(Univ. de Chile) – Dania Trista (Univ. Católica del Norte).
TITLE: Re-Os analyses on manganese deposits from northern Mexico
ORGANIZATION: University of Arizona, USA.
FUNDING: University of Arizona
DURATION: 2004-2005
PRINCIPAL INVESTIGADOR: Dr. Joaquín Ruiz – Rafael del Rio (Univ. de Arizona, USA)
TITLE: Determination of source of metals and age of the Herradura gold deposit, Mexico.
ORGANIZATION: University of Arizona, USA.
FUNDING: Cia. Minera Peñoles, México.
DURATION: 2004-2005
PRINCIPAL INVESTIGADOR: Dr. Joaquín Ruiz – Francisco Quintanar (Univ. de Arizona, USA)
TITLE: Re-Os systematics in Colombian mineral deposits.
ORGANIZATION: University of Arizona, USA.
FUNDING: Anglo Gold Ashanti, Colombia
DURATION: 2008-2009
PRINCIPAL INVESTIGADOR: Dr. Joan Carles Melgarejo Draper – Hildebrando Mejia (Univ. de
Barcelona, Spain).
TITLE: Determination of source of metals and age of the Adanac gold deposit and associated porphyry
molybdenum deposit
ORGANIZATION: University of Arizona, USA.
DURATION: 2007-2009
PRINCIPAL INVESTIGADOR: Dr. Greg Arehart – Jessica Smith (Univ. of Nevada, USA)
TITLE: Re-Os dating of porphyry copper deposits from Ecuador.
ORGANIZATION: University of Arizona, USA.
DURATION: 2007-2009
PRINCIPAL INVESTIGADOR: Dr. Massimo Charadia – estudiante Philip Schutte (Geneva Univ,
Switzerland)
TITLE: Re-Os molybdenite dating of the Pine Creek deposit, California

ORGANIZATION: University of Arizona, USA.
DURATION: 2007-2009
PRINCIPAL INVESTIGADOR: Dr. Erich Petersen – John Porter (Univ. of Utah, USA)
TITLE: Dating the molybdenite mineralization of the Zaldivar deposit, northern Chile
ORGANIZATION: University of Arizona, USA.
FUNDING: Cia. Minera Barrick, Chile
DURATION: 2007-2009
PRINCIPAL INVESTIGADOR: Dr. Osvaldo Rabbia – Constanza Jara (Univ. de Concepción, Chile)
TITLE: Re-Os molybdenite dating of the Escondida deposit, Chile.
ORGANIZATION: University of Arizona, USA.
FUNDING: Cia. Minera Escondida, Chile
DURATION: 2007-2009
PRINCIPAL INVESTIGADOR: Dr. Shoji Kojima – Barbara Romero (Univ. Católica del Norte, Chile)
7. PUBLICATIONS:
BOOKS AND MONOGRAPHIES
BARRA, F. (1996): Estudio petrográfico de serpentinitas y mineralógico de cromitas del área
de La Cabaña, Provincia de Cautín, IX Región, Chile. Memoria de Título, Dpto. Ciencias de la
Tierra, Univ. de Concepción, 183 pp.
BARRA, F. (2001) A Re-Os study of sulfide minerals from the Bagdad porphyry Cu-Mo
deposit, northern Arizona, USA. Tesis de Maestría, Dpto. de Geociencias, Univ. de Arizona,
Tucson, Arizona, USA
BARRA, F. (2005) Applications of the Re-Os isotopic system in the study of mineral deposits:
Geochronology and source of metals. Tesis Doctoral, Dpto. de Geociencias, Univ. de Arizona,
Tucson, Arizona, USA, 211 pp.
GUIDEBOOKS
DODEN, A.G., GOLD, D.P, MATHUR, R., ALTAMURA, R.J., BARRA, F., BUSHMIRE,
S.G., McELROY, T.A., MUTTI, L., & SICREE, A.A. (2006) Sulfide Occurrences in Central
Pennsylvania. Field Trip Guidebook Geological Society of America – Northeastern Section, 41 st
Annual Meeting, 20-22 March 2006, Harrisburg, Pennsylvania.
BOOK CHAPTERS
SELLEY, D., BROUGHTON, D., SCOTT, R., HITZMAN, M., BULL, S., LARGE, R.,
McGOLDRICK, P., CROAKER, M., POLLINGTON, N., & BARRA, F. (2005) A New Look
at the Geology of the Zambian Copperbelt. J.W. Hedenquist, J.F.H. Thompson, R.J. Goldfarb,

and J.P. Richards (Eds) Economic Geology 100 th Anniversary Volume, p. 965-1000.
MATHUR, R., TITLEY, S., BARRA, F., BRANTLEY, S., WILSON, M., PHILLIPS, A.,
MUNIZAGA, F., MAKSAEV, V., VERVOORT, J. 7 HART, G. (2009) Copper Isotope
Franctionation Used to Identify Supergene Processes. S. Ttiley (Ed) Society of Economic
Geologists Special Publication No 14, p. 45-50.
NATIONAL JOURNALS
MANTILLA, F.L.C., VALENCIA, V.A., BARRA, F. & PINTO, V.J. (2009) Geocronología U-
Pb de los cuerpos porfiríticos del distrito aurífero de Vetas-California, Dpto de Santander,
Colombia. Boletín de Geología-Colombia, vol. 31, p. 31-43.
INTERNATIONAL (ISI) JOURNALS
1. BARRA, F., RABBIA, O., ALFARO, G., MILLER, H., HOFER, S. & KRAUS, S. (1998): Las
serpentinitas y cromititas de La Cabaña, Provincia de Cautín, IX Región, Chile. Revista
Geológica de Chile, vol. 25, nº 1 p. 29-44.
2. HOFER, C., KRAUS, S., MILLER, H., ALFARO, G. & BARRA, F. (2001): Chromite-bearing
serpentinite bodies within an arc-backarc metamorphic complex near La Cabana, south Chilean
Coastal Cordillera. Journal of South American Earth Sciences, vol. 14, p.113-126.
3. BARRA, F., RUIZ, J., MATHUR, R. & TITLEY, S. (2003) A Re-Os study of sulfide minerals
from the Bagdad porphyry Cu-Mo deposit, northern Arizona, USA. Mineralium Deposita, vol.
38, p. 585-596.
4. VALENCIA, V.A., RUIZ, J., BARRA, F., GEHRELS, G., DUCEA, M., TITLEY, S.R., &
OCHOA-LANDIN, L. (2005) U-Pb single zircon and Re-Os molybdenite geochronology from
La Caridad porphyry copper deposit: Insights for the duration of magmatism and mineralization
in the Nacozari District, Sonora, Mexico. Mineralium Deposita, vol. 40, p. 175-191.
5. BARRA, F., RUIZ, J., VALENCIA, V.A., OCHOA-LANDIN, L., CHESLEY, J.T., &
ZURCHER, L. (2005) Laramide porphyry Cu-Mo mineralization in northern Mexico: Age
constraints from Re-Os geochronology in molybdenite. Economic Geology, vol. 100, p. 1605-
1615.
6. VALENCIA, V.A., NOGUEZ-ALCANTARA, B., BARRA, F., RUIZ, J., GEHRELS, G.,
QUINTANAR, F., & VALENCIA-MORENO, M. (2006) Re-Os molybdenite and LA-ICPMS
U-Pb zircon geochronology from the Milpillas porphyry copper deposit: Insights for
mineralization in the Cananea District, Sonora, Mexico. Revista Mexicana de Ciencias, vol. 23,
p. 39-53.
7. TRISTA-AGUILERA, D., BARRA, F., RUIZ, J., MORATA, D., TALAVERA-MENDOZA,
O., KOJIMA, S., & FERRARIS, F. (2006) Re-Os isotope systematics for the Lince-Estefania
deposit: Constraints on the timing and source of copper mineralization in a stratabound copper
deposit, Coastal Cordillera of northern Chile. Mineralium Deposita, vol. 41, p. 99-105.

8. DE HALLER, A., CORFU, F., FONTBOTE, L., SCHALTEGGER, U., BARRA, F.,
CHIARADIA, M., FRANK, M., & ZUNIGA-ALVARADO, J. (2006) Geology, U-Pb
geochronology, and Hf, Pb isotopic data of the Raul-Condestable iron oxide copper-gold
deposit, central coast of Peru. Economic Geology, vol. 101, p. 281-310.
9. VALENCIA, V.A., BARRA, F., WEBER, B., RUIZ, J., GEHRELS, G., & LOPEZ-
MARTINEZ, M. (2006) U-Pb and Re-Os geochronology of the El Arco porphyry copper
deposit, Baja California, Mexico. Journal of South American Earth Sciences, vol. 22, p. 39-51.
10. BARRA, F., SWINDLE, T.D., KOROTEV, R.L., JOLLIFF, B.L., ZEIGLER, R.A., & OLSON
E. (2006) 40 Ar- 39 Ar dating on Apollo 12 regolith: Implications on the age of Copernicus and the
source of non-mare materials. Geochimica et Cosmochimica Acta, vol. 70, p. 6016-6031.
11. DELANO, J.W., ZELLNER, N.E.B., BARRA, F., OLSON, E., SWINDLE, T.D., TIBBETTS,
N.J., & WHITTET, D.C.B. (2007) An integrated approach to understanding Apollo 16 impact
glasses: Chemistry, isotopes, and shape. Meteoritics & Planetary Science, vol. 42, p. 993-1004.
12. MATHUR, R., MUTTI, L., BARRA, F., GOLD, D., SMITH II, R.C., DODEN, A., DETRIE,
T., RUIZ, J., & McWILLIAMS, A. (2008) Fluid inclusion and Re-Os isotopic evidence for hot,
Cenozoic mineralization in the Central Pennsylvanian Valley and Ridge province. Mineralogy
and Petrology, vol. 93, p. 309-324.
13. VALENCIA, V.A., EASTOE, E., RUIZ, J., OCHOA-LANDIN, L., GEHRELS, G.,
GONZALEZ-LEON, C., & BARRA, F. (2008) Hydrothermal evolution of the porphyry copper
deposit at La Caridad, Sonora, Mexico, and the relationship with a neighboring high-sulfidation
epithermal deposit. Economic Geology, vol. 103, p. 473-492.
14. DEL RIO, R., RUIZ, J., OCHOA-LANDIN, L., NORIEGA, O., BARRA, F., MEZA-
FIGUEROA, D., & PAZ-MORENO, F. (2008) Geology, Geochemistry and Re-Os systematics
in manganese deposits from Santa Rosalia basin and adjacent areas in Baja California Sur,
Mexico. Mineralium Deposita, vol. 43, p. 467-482.
15. GARRIDO, M., BARRA, F., DOMINGUEZ, E., RUIZ, J., VALENCIA, V.A. (2008) Late
Carboniferous porphyry copper mineralization at La Voluntad, Neuquen, Argentina: Constraints
from Re-Os molybdenite dating. Mineralium Deposita, vol. 43, p. 591-597.
16. MATHUR, R., TORNOS, F., & BARRA, F., (2008) The Aguablanca Ni-Cu deposit: A Re-Os
isotope study. International Geology Review, vol. 50, p. 948-958.
17. MATHUR, R., TITLEY, S., BARRA, F., BRANTLEY, S., WILSON, M., PHILLIPS, A.,
MUNIZAGA, F., MAKSAEV, V., VERVOORT, J., & HART, G. (2009) Exploration potential
of Cu isotope fractionation in porphyry copper deposits. Journal of Geochemical Exploration,
vol. 102, p.1-6.

18. ZELLNER, N.E.B., DELANO, J.W., SWINDLE, T.D., BARRA, F., OLSEN, E., & WHITTET,
D.C.B. (2009) Evidence from 40 Ar/ 39 Ar ages of lunar impact glasses for an increase in the
impact rate ~800 Ma ago. Geochimica et Cosmochimica Acta, vol. 73, p. 4590-4597.
19. ZELLNER, N.E.B., DELANO, J.W., SWINDLE, T.D., BARRA, F., OLSEN, E., & WHITTET,
D.C.B. (2009) Apollo 17 regolith, 71501,206: a record of impact events and mare volcanism in
lunar glasses. Meteoritics & Planetary Science, vol. 44, p. 839-851.
20. MAKSAEV, V., MUNIZAGA, F., VALENCIA, V., & BARRA, F. (2009) LA-ICP-MS zircon
U-Pb geochronology of volcanic rocks to constrain the age of the Cerrillos Formation, Atacama
Region, Chile: Tectonic and metallogenetic implications. Andean Geology, vol. 36, p. 264-287.
21. MATHUR, R., TITLEY, S., BARRA, F., BRANTLEY, S., WILSON, M., PHILLIPS, A.,
MUNIZAGA, F., MAKSAEV, V., VERVOORT, J. 7 HART, G. (2009). Copper isotope
fractionation used to identifiy supergene processes. SEG Special Publication No 14, p. 45-50.
22. TORNOS, F., VELASCO, F., BARRA, F., & MORATA, D. (2010) The Tropezón Cu-Mo-(Au)
deposit, Northern Chile: the missing link between IOCG and porphyry copper systems?
Mineralium Deposita, vol. 45, p.313-321
23. MAKSAEV, V., ALMONACID, T.A., MUNIZAGA, F., VALENCIA, V., McWILLIAMS, M.
& BARRA, F. (2010) Geochronological and thermochronological constraints on porphyry
copper mineralization in the Domeyko alteration zone, northern Chile. Andean Geology, vol.
37, p. 144-176
24. MAUK, J.L., HALL, C.M., BARRA, F., & CHESLEY, J.T. (in review) Punctuated evolution of
a large epithermal province: the Hauraki Goldfield, New Zeland. Economic Geology
25. ROMERO, B., KOJIMA, S., WONG, C., BARRA, F., VELIZ, W., & RUIZ, J. (in review) Re-
Os Geochronology of the Escondida and Escondida Norte deposits, Northern Chile:
Implications for the Temporal Evolution of a Large Porphyry Cu-Mo District. Resource
Geology
26. SCHUTTE, P., CHIARADIA, M., BARRA, F., VILLAGOMEZ, D., & BEATE, B. (in review)
Metallogenic and tectonomagmatic features of Miocene porphyry-related ore deposits in
Ecuador revealed by Re-Os, Ar-Ar, and U-Pb gechronology. Mineralium Deposita
27. BARRA, F., ALCOTA, H., RIVERA, S., VALENCIA, V., MUNIZAGA, V., & MAKSAEV,
V. (in review) Timinga and formation of porphyry Cu-Mo mineralization in the Chuquicamata
district, northern Chile: new constraints from the Toki Cluster. Mineralium Deposita
EXTENDED ABSTRACTS (WITH FIGURES AND TABLES)
1. SUAREZ, C., CAMPOS, E., BARRA, F., KOJIMA, S. & SUGAKI, A. (1994): Estudio
experimental de la fase de equilibrio en el sistema Bi2S3 - Sb2S3. Actas VII Congreso Geológico
Chileno. Dpto. Ciencias de la Tierra, Univ. de Concepción, Tomo II: 1224 - 1228.

2. ALFARO, G., FRUTOS, J., KELM, U., MILLER, H., BARRA, F. & HELLE, S. (1994): Marco
Geológico- Estructural en la distribución de oro - paladio y platino en rocas ultramáficas
serpentinizadas de la Cordillera de la Costa del sur de Chile. Actas VII Congreso Geológico
Chileno. Dpto. Ciencias de la Tierra, Univ. de Concepción, Tomo II: 714 - 719.
3. RABBIA, O., ALFARO, G., & BARRA, F. (1994): Presencia de espilitas metasomatizadas en
el cinturón serpentinítico de la Cordillera de la Costa del sur de Chile. II Jornadas de
Mineralogía, Petrografía y Metalogénesis de rocas Ultrabásicas, Univ. Nacional de La Plata,
nº3: 607-615.
4. BARRA, F., RABBIA, O. & ALFARO, G. (1997): Mineralogía y geoquímica de las cromititas
de La Cabaña: implicancias en el uso de la cromita como indicador petrogenético para las
peridotitas del centro sur de Chile. VIII Congreso Geológico Chileno. Dpto. Ciencias
Geológicas, Univ. Católica del Norte, Antofagasta. Tomo II: 1205-1209.
5. BARRA, F. & RODRIGUEZ, M. (1997): Petrografía y mineralogía de algunos cuerpos
serpentiníticos del centro sur de Chile. VIII Congreso Geológico Chileno. Dpto. Ciencias
Geológicas, Univ. Católica del Norte, Antofagasta. Tomo II: 1210-1214.
6. RODRIGUEZ, M. & BARRA, F. (1997): Texturas del par mineral calcopirita-esfalerita del
yacimiento Carola, III Región, Chile: Antecedentes termométricos. VIII Congreso Geológico
Chileno. Dpto. Ciencias Geológicas, Univ. Católica del Norte, Antofagasta. Tomo II: 1114-
1117.
7. HERNANDEZ, L. & BARRA, F. (1997): Hidrogrosularia-uvaroita, vesuvianita y perovskita:
productos de rodingitización de rocas ultramáficas del área de La Cabaña, IX Región, Chile.
VIII Congreso Geológico Chileno. Dpto. Ciencias Geológicas, Univ. Católica del Norte,
Antofagasta. Tomo II: 1309-1313.
8. BARRA, F. & RODRIGUEZ, M. (1998): Un modelo de formación de ferricromita:
implicancias en el uso de espinelos crómicos como indicador petrogenético. IV Jornadas de
Mineralogía, Petrografía y Metalogénesis de Rocas Máficas y Ultramáficas. Bahía Blanca,
Argentina. Tomo I: 9-17.
9. RODRIGUEZ, M. & BARRA, F. (1998): Eventos de alteración y mineralización en el distrito
minero de Punta del Cobre. IV Reunión de Mineralogía y Metalogénesis. Bahía Blanca,
Argentina. Tomo I: 227-233.
10. RODRIGUEZ, M., CAMPOS, E. & BARRA, F. (2000): Antecedentes mineralógicos y
microtermométricos del yacimiento Manto Verde, Distrito Minero Punta del Cobre, Norte de
Chile. V Congreso de Mineralogía y Metalogénia. Univ. Nacional de la Plata, Tomo I: 443-
447.
11. RODRIGUEZ, M., BARRA, F. & MUNZENMAYER, M. (2001): Geología y mineralización
del distrito aurífero Chancón, VI Región, Chile. Congreso Latinoamericano de Geología,
Uruguay. (formato CD).

12. VALENCIA, V., RUIZ, J., BARRA, F., OCHOA-LANDIN, L., PEREZ-SEGURA, E.
& ESPINOZA, E. (2003): La Caridad porphyry copper deposit: A porphyry-epithermal
transition in the southwest North America porphyry copper province. X Congreso
Geologico Chileno, October 6-10, 2003, Concepcion, Chile.
13. BARRA, F. & RUIZ, J. (2003): Contribuciones de la geocronologia de Re-Os en
molibdenitas al estudio de la longevidad de depositos tipo porfido cuprifero. X Congreso
Geologico Chileno, October 6-10, 2003, Concepcion, Chile.
14. MUNZENMAYER, M., RODRIGUEZ, M. & BARRA, F. (2003): Aspectos
mineralogicos y microtermometricos de las vetas polimetalicas del Distrito Aurifero
Chancon, VI Region, Chile. X Congreso Geologico Chileno, October 6-10, 2003,
Concepcion, Chile.
15. BARRA, F., SWINDLE, T.D., KOROTEV, R.L., JOLLIFF, B.L., ZEIGLER, R.A., &
OLSON, E. (2004): 40 Ar- 39 Ar geochronology on Apollo 12 regolith. XXXV Lunar and
Planetary Science Conference, March 15-19, 2004, Houston, Texas, USA.
16. ZELLNER, N.E.B., SWINDLE, T.D., BARRA, F., DELANO, J.W., TIBBETS, N.,
WHITTET, D.C.B. & SPUDIS, P.D. (2005): Chemical and isotopic analyses of Apollo
16 glasses: An integrated approach. XXXVI Lunar and Planetary Science Conference,
March 14–18, 2005, League City, Texas, USA.
17. ZELLNER, N.E.B., DELANO, J.W., SWINDLE, T.D., BARRA, F., OLSEN, E.,
WHITTET, D.C.B. & SPUDIS, P.D. (2005): Earth-Moon impacts at ~300 Ma and ~500
Ma ago. XXXVI Lunar and Planetary Science Conference, March 14–18, 2005, League
City, Texas, USA.
18. JOLLIFF, B.L., ZEIGLER, R.A., KOROTEV, R.L., BARRA, F. & SWINDLE, T.D.
(2005): A Thorium-rich mare basalt rock fragment from the Apollo 12 regolith: A
sample from a young Procellarum flow? XXXVI Lunar and Planetary Science
Conference, March 14–18, 2005, League City, Texas, USA.
19. DUHART, P., BARRA, F., MUNOZ, J., TASSINARI, C., & RUIZ, J. (2005): Re-Os
ages of molybdenites associated with granites of the North Patagonian Batholith, Chilean
Andes. 6 th International Symposium on Andean Geodynamics ISAG 2005, September
12-14, 2005, Barcelona, España.
20. TRISTA-AGUILERA, D., RUIZ, J., BARRA, F., MORATA, D., TALAVERA-
MENDOZA, O., KOJIMA, S. & FERRARIS, F. (2005): Origin and age of Custratabouond
ore deposits: Michilla district, Northern Chile. 6 th International Symposium
on Andean Geodynamics ISAG 2005, September 12-14, 2005, Barcelona, España.

21. ZELLNER, N.E.B., DELANO, J.W., SWINDLE, T.D., BARRA, F., OLSEN, E., &
WHITTET, D.C.B. (2006): Did a transient increase in the impact flux occur 800 Ma
ago? XXXVII Lunar and Planetary Science Conference, March 13–17, 2006, League
City, Texas, USA.
22. TORO, J.C., ORTUZAR, J., MAKSAEV, V., BARRA, F., & ZAMORANO, J. (2006):
Cronologia de un nuevo cluster en la franja de porfidos cupriferos del Mioceno de Chile
Central. XI Congreso Geologico Chileno, August 7-11, 2006, Antofagasta, Chile.
23. BERTENS, A., CLARK, A.H., BARRA, F. & DECKART, K. (2006): Evolution of the
Los Pelambres-El Pachon porphyry copper-molybdenum district, Chile/Argentina. XI
Congreso Geologico Chileno, August 7-11, 2006, Antofagasta, Chile.
24. GARRIDO, M., BARRA, F., DOMINGUEZ, E., RUIZ, J., & VALENCIA, V.A.
(2008): Re-Os geochronology of La Voluntad porphyry copper deposit, Neuquen,
Argentina. VI South American Symposium on Isotope Geology, April 13-17, 2008, San
Carlos de Bariloche, Argentina.
25. MUNIZAGA, F., MAKSAEV, M., FANNING, M., MATHUR, R., BARRA, F.,
McWILLIAMS, M., & SANHUEZA, A. (2008): Geochronology of the Collahuasi
porphyry Cu-Mo cluster of the north Chilean Andes. VI South American Symposium on
Isotope Geology, April 13-17, 2008, San Carlos de Bariloche, Argentina.
26. MAUK, J.L., HALL, C.M., BARRA, F., & CHESLEY, J.T. (2009): Time-focussed
epithermal mineralisation in the Hauraki Goldfield, New Zeland. 10 th Biennial SGA
meeting, August 17-20, 2009, townsville, Australia.
27. MAKSAEV, V., MUNIZAGA, F., MATHUR, R., BARRA, F., FANNING, M.,
McWILLIAMS, M., RUIZ, J., & SANHUEZA, A. (2009): Geochronology of the
Collahuasi porphyry Cu-Mo district, north Chilean Andes. XII Congreso Geologico
Chileno, November 22-26, 2009, Santiago, Chile.
28. ORTUZAR, J., TORO, J., MAKSAEV, V., & BARRA, F. (2009): Geologia del
prospecto Novicio, Alta Cordillera, 5ta Region, Chile Central. XII Congreso Geologico
Chileno, November 22-26, 2009, Santiago, Chile.
29. TORO, J., ORTUZAR, J., MAKSAEV, V., & BARRA, F. (2009): Nuevos antecedentes
geocronologicos franja de porfidos Cu-Mo Mioceno-Plioceno, Chile Central:
Implicancias metalogenicas. XII Congreso Geologico Chileno, November 22-26, 2009,
Santiago, Chile.
30. PORTER, J., BARRA, F., BARTLEY, J. & PETERSEN, E. (2010): Timing of the Pine
Creek tungsten skarn and the causative Morgan Creek pluton, California: Implications

for ore génesis and regional geology. GSN 2010 Symposium: Great Basin Evolution and
Metallogeny, May 14-22, 2010, Reno, Nevada, USA.
31. SANDERS, J.A., KAMENOV, G.D., HOFSTRA, A.H., UNGER, D.L., CREASER,
R.A. & BARRA, F. (2010): “Forensic” geochemical approaches to constrain the source
of Au-Ag in low-sulfidation epithermal ores. GSN 2010 Symposium: Great Basin
Evolution and Metallogeny, May 14-22, 2010, Reno, Nevada, USA
ABSTRACTS
1. BARRA F., RUIZ J. & MATHUR R. (2001): A rhenium-osmium study of sulfides from
the Bagdad porphyry copper deposit. Geodaze 2001, Tucson, Arizona, USA.
2. BARRA F., RUIZ J., TITLEY S. & CHESLEY, J.A (2002) Rhenium-Osmium Study of
Sulfides from the Bagdad Porphyry Copper Deposit: Implications for the Duration of
Hydrothemal Systems and Source of Metals in Porphyry Deposits. American Geophysical
Union Fall Meeting, December 6-10, 2002, San Francisco, California, USA.
3. RUIZ J., KIRK J., MATHUR R., BARRA F. & CHESLEY J. (2002) Behavior of Re-Os and
Au in hydrothermal/magmatic systems. Workshop on highly siderophile elements in terrestrial
and meteoritic samples: implications for planetary differentiation and igneous processes. August
26-28, 2002, Nancy, France.
4. BARRA F., ZURCHER L. & VALENCIA V. (2003): Age and duration of hydrothermal
systems in northern Mexico: constraints from Re-Os systematics. Geodaze 2003,
Tucson, Arizona, USA.
5. BARRA F., RUIZ J., VALENCIA V. & OCHOA L. (2003): Geocronologia de Re-Os en
porfidos cupriferos del noroeste de Mexico. XIII Congreso Nacional de Geoquimica,
September 22-26, 2003, Juriquilla, Queretaro, Mexico.
6. VALENCIA V., RUIZ J., DUCEA M., BARRA F. & OCHOA L. (2003): Evidence for
a link between La Caridad porphyry copper deposit and La Caridad Antigua high
sulfidation epithermal deposit. XIII Congreso Nacional de Geoquimica, September 22-
26, 2003, Juriquilla, Queretaro, Mexico.
7. BARRA F., RUIZ J. & CHESLEY J. (2003): The longevity of porphyry copper systems:
a Re-Os approach. Geological Society of America Meeting, November 2-5, 2003,
Seattle, Washington, USA.
8. RUIZ, J., BARRA, F., ASHWAL, L.D., & Le GRANGE, M. (2004): Re-Os systematics on
sulfides from the Platreef, Bushveld Complex, South Africa. Geoscience Africa 2004, July 12-
16, 2004, Johannesburg, Sud Africa.

9. VALENCIA, V.A., BARRA, F. RUIZ, J., QUINTANAR, F., & NOGUEZ-ALCANTARA, B.
(2004): Milpillas porphyry copper deposit, the oldest Laramide porphyry copper deposit in
Mexico?: Insights from Re-Os systematics. XIV Congreso Nacional de Geoquimica, September
13-17, 2004, Hermosillo, Sonora, Mexico.
10. DEL RIO, R., RUIZ, J., OCHOA-LANDIN, L., BARRA, F., MEZA-FIGUEROA, D. &
NORIEGA, O. (2004): Re-Os perspective for the manganese oxides deposits in Baja California
Sur, Mexico. XIV Congreso Nacional de Geoquimica, September 13-17, 2004, Hermosillo,
Sonora, Mexico.
11. LUGO-ZAZUETA, R., VALENCIA-MORENO, M., OCHOA-LANDIN, L., & BARRA, F.
(2004): Alteracion hidrotermal y mineralizacion de molibdeno de la mina El Creston, Opodepe,
Sonora. IV Reunion Nacional de Ciencias de la Tierra, November 1-5, 2004, Juriquilla,
Queretaro, Mexico.
12. VALENCIA, V.A., RUIZ, J., EASTOE, C., GEHERLS, G., & BARRA, F. (2004): Evolucion
del porfido cuprifero de La Caridad, Sonora, Mexico: basado en analisis de inclusions fluidas,
isotopos de S, O, H, U-Pb y Re-Os. IV Reunion Nacional de Ciencias de la Tierra, November 1-
5, 2004, Juriquilla, Queretaro, Mexico.
13. VALENCIA, V.A., WEBER, B., RUIZ, J., BARRA, F., GEHERLS, G., & LOPEZ, M. (2004):
Geocronologia por Re-Os y U-Pb del deposito tipo porfido Cu-Au de El Arco, Baja California,
Mexico. IV Reunion Nacional de Ciencias de la Tierra, November 1-5, 2004, Juriquilla,
Queretaro, Mexico.
14. BARRA, F., BROUGHTON, D., RUIZ, J. & HITZMAN, M. (2004): Multi-stage
mineralization in the Zambian Copperbelt based on Re-Os isotope constraints. Geological
Society of America Meeting, November 7-10, 2004, Denver, Colorado, USA.
15. DELANO, J.W., ZELLNER, N.E., SWINDLE, T.D., BARRA, F., OLSEN, E., & WHITTET,
D.C.B. (2005): What is the Tycho component at Apollo 17? 68 th Annual Meteoritical Society
Meeting, September 12-16, 2005, Gatlinburg, Tennessee.
16. PIEROTTI, G.M., MATHUR, R., SMITH II, R.C., & BARRA, F. (2006): Re-Os molybdenite
ages for the Antietam Reservoir, eastern Pennsylvania, a story of open-system behavior Re-Os
isotopes in molybdenite. Geological Society of America – Northeastern Section 41 st Annual
Meeting, March 20-22, 2006.
17. VALENCIA, V.A., RUIZ, J., GEHRELS, G., BARRA, F. & NOGUEZ-ALCANTARA, B.
(2006): Late Cretaceous porphyry copper mineralization in Sonora, Mexico and the implications
for the evolution of the SW North America porphyry copper deposit Province. 16 th Annual
Goldschmidt Conference, August 27-September 1, 2006.
18. BARRA F., RUIZ J. & VALENCIA, V.A. (2006): Molibdenita: Mineralogia y Geocronologia.
VII Seminario Minero Internacional – Sonora 2006, October 17-20, 2006.

19. DEL RIO R., OCHOA-LANDIN L., RUIZ J., APONTE M. & BARRA F. (2006): Diferentes
pulsos magmaticos mineralizantes registrados en el Distrito Minero de Cananea. VII Seminario
Minero Internacional – Sonora 2006, October 17-20, 2006.
20. BARRA F., HIDALGO E., VALENCIA, V.A. PARDO, R. & RUIZ J. (2006): Geology and
Geochronology of the Toki Cluster: Chuquicamata District Northern Chile. Geological Society
of America Meeting, October 22-25, 2006.
21. MAKSAEV, V., MUNIZAGA, F., VALENCIA, V., BARRA, F., McWILLIAMS, M.O. &
MATHUR, R. (2006): Geochronology of Cretaceous porphyry copper deposits of the Coastal
Cordillera of northern Chile (Latitudes 26 o 30’ to 30 o 30’S). Geological Society of America
Meeting, October 22-25, 2006.
22. MAKSAEV, V., MUNIZAGA, F., ALMONACID, A., VALENCIA, V., BARRA, F. &
McWILLIAMS, M.O. (2006): Geochronology of the Dos Amigos and Tricolor porphyry copper
systems of the Domeyko alteration zone, northern Chile. Geological Society of America
Meeting, October 22-25, 2006.
23. RUIZ J., CHESLEY J. & BARRA F. (2007): Re-Os isotope geochemistry and its potential use
in basin fluid analysis. American Association of Petroleum Geologist Annual Meeting, April 1-
4, 2007.
24. CISTERNAS M.E. & BARRA F. (2007): Origin and Re-Os systematics of bitumen from Lwer
Cretaceous volcanic rocks, northern Chile. 17 th Annual Goldschmidt Conference, August 19-24,
2007.
25. MATHUR, R., BRANTLEY, S., WALL, A., KIMBALL, B, BARRA, F., TITLEY, S.R.,
MUNIZAGA, F., & MAKSAEV, V. (2007): Potential utility of Cu isotopes to recognize
secondary Cu mineralization and the degree of enrichment. 17 th Annual Goldschmidt
Conference, August 19-24, 2007.
26. VALENCIA, V.A., BARRA, F., RUIZ, J., NOGUEZ-ALCANTARA, B. & GEHRELS, G.
(2007): Re-Thinking the metallogenesis of the Southwestern North America porphyry copper
province: New insights from U-Pb and Re-Os geochronology of Mexican porphyry copper
deposits. Ores and Orogenesis Symposium, September 24-30, 2007.
27. MATHUR, R., BRANTLEY, S., WALL, A., KIMBALL, B, BARRA, F., TITLEY, S.R.,
MUNIZAGA, F., & MAKSAEV, V. (2007): Cu isotope fractionation in Porphyry copper
deposits. Ores and Orogenesis Symposium, September 24-30, 2007.
28. PORTER, J.P., PETERSEN, E., & BARRA, F. (2008) Apparent multi-million year duration for
the Pine Creek tungsten skarn and other magmatic hydrothermal systems: further evidence of
protracted, incremental pluton emplacement? Gordon Conference Geochemistry of Mineral
Deposits, June 29-July 4, 2008.
29. DEL RIO, R., RUIZ, J., OCHOA-LANDIN, L., MATHUR, R., BARRA, F., ZUNIGA-
HERNANDEZ, L., & ALBINSON, T. (2008) Copper isotopes systematics for the Boleo Cu-Co-

Zn district in Baja California Sur, Mexico. Actas INAGEQ XVIII, Vol. 1, p.38, October 6-10,
2008.
June, 2010