 | | Report (issue) | | S. Geological Survey and Servicio Geologico de Bolivia in cooperation with the Trade Development Program...the U.S. Geological Survey-Servicio Geol6gico de Bolivia as part of the Mineral Resource Evaluation of the...reports in the files of the Servicio Geologico de Bolivia located in their main office in La Paz. All of...States, and the Servicio Geol6gico de Bolivia in La Paz, Bolivia. This report is an edited version of...to which the deposit belongs. 11 PROVINCE The Republic of Bolivia is divided into 9 departments, three |  | Rice, C. M., Steele, G. B., Barfod, D. N., Boyce, A. J., Pringle, M. S. (2005) DURATION OF MAGMATIC, HYDROTHERMAL, AND SUPERGENE ACTIVITY AT CERRO RICO DE POTOSI, BOLIVIA. Economic Geology, 100 (8) 1647-1656 doi:10.2113/gsecongeo.100.8.1647 | Journal (article/letter/editorial) | | HYDROTHERMAL, AND SUPERGENE ACTIVITY AT CERRO RICO DE POTOSI, BOLIVIA C. M. RICE,† G. B. STEELE,* Department...39Ar New high precision dating of sanidine and biotite from two rhyolitic domes and an ignimbrite, combined...age, suggests that the world-class Ag deposit at Cerro Rico was emplaced during a protracted period of...disseminated part of the orebody. Introduction Cerro Rico de Potosi is the world’s largest silver deposit...remain within the oxide cap (Bernstein, 1989). Cerro Rico is one of many deposits carrying Ag and Sn |  | | Journal (article/letter/editorial) | | ages of 6.7±0.7 Ma at Avicaya and 3.9±0.7 Ma at Bolivar, respectively, suggesting that erosion and chemical...alunite, jarosite, sericite, sulfur isotope, Oruro, Bolivia mineralization epochs of Bolivian epigenetic-type...district, the principal tin-producing district in Bolivia, and discuss these ages together with previous...Ages of Tin-Polymetallic Mineralization, Oruro, Bolivia 275 Fig. 2 Geologic map of the Oruro mining district...district, Bolivia. Geology Sample No. Material K-Ar age (Ma) biotite 7.8 (8.0) rhyolite IIIA biotite 7.3 (7 |  | | Report (volume) | | Cordillera Occidental, Bolivia By U.S. GEOLOGICAL SURVEY and SERVICIO GEOLOGICO DE BOLIVIA With a section on...Cordillera Occidental, Bolivia I by U.S. Geological Survey and Servicio Geol6gico de Bolivia; with a section...mineral resources-Bolivia-Cordillera Occidental. 3. Geology-Altiplano. 4. Geology-Bolivia-Cordillera Occidental...Geological Survey (U.S.) II. Servicio Geol6gico de Bolivia. Ill. Series. QE75.B9 no. 1975 [TN39.A4] 557.3s--dc20...cooperation between the Servicio Geologico de Bolivia and the U.S. Geological Survey. The geologic research |  | | Report (issue) | | No. 12: Bolivia ht of Mineral Collecting N 978-0-9790998-5-4 Publisher Lithographie, LLC Denver, Colorado...specimen 'being sold with the shrine when he was in Bolivia buying mineral specimens in the 1970s. He took...Ph08pl,ophyllite; 5. 2 cm tall Cerro Rico, Potosi, B,atillo province, Potosi Andy Seibel col/action Jejf-SC...wp11�. Yaalte: 12.5 cm wide Siglo XX Mine, ,U� Bustillo province, Potosi Malty Zinn colkdknt (ex Marv...640 200 100 600 The Political Divisions of Bolivia (after United Nations Map No. 3875, Peacekeeping |  | | Journal (issue) | | Articles Famous mineral localities: The Bristol copper mine, Connecticut......................................in the U.S.A. notesfrom th r EDITORS OLD YUMA MINE Another great mineral locality has now been closed...longfamous Old Yuma mine near Tucson (see R. L. Jones, “Famous mineral localities: the Old Yuma mine,” in vol....period of activity, access to the mine was cut off in 1984. In 1996 the mine area was absorbed into the Saguaro...and Mining Company for the sum of $558,000. The mine is now owned outright by the Federal Government |  | | Book | | .................. .42 3.1.6 Pirquitas, Jujuy Province, Argentina ..................................... 58 3.2.7 Maranda J, Murchison belt, Northern Province, South Africa ........... 59 VIII Table of...Cordillera Oriental, Bolivia ............................ 89 3.4.13 Bolivar, Cerro Bonete Area, Cordillera...Occidental, Bolivia ............ 89 3.4.14 Huari-Huari, Potosi, Cordillera Oriental, Bolivia ............Occidental, Bolivia ......... 91 3.4.16 San Vicente, Uyuni, Cordillera Oriental, Bolivia ........... |  | | Journal (article/letter/editorial) | | deposits of Miocene age in the Eastern Cordillera in Bolivia were studied by ICP/MS and EPMA for major and minor...for the Potosi deposits, 2,730 ppm and 7.4 for Bolivar deposit, 2,510 ppm and 17.5 for Siete Suyos–Animas...ppm and 2.1 at San Lorenzo; 584 ppm and 1.7 at Bolivar; 499 ppm and 1.23 at Porco; 449 ppm and 1.21 at...concentration of trace amounts of indium. Keywords: Bolivia, indium, petrukite, polymetallic, Potosi, sphalerite...Paz PERU Oruro Sn-polymetallic ore belt Arica BOLIVIA Potosi CHILE Lake Uyuni Border Cities Atocha |  | | Journal (article/letter/editorial) | | The district is a part of the iron metallogenie province of northern Guayana, one of the richest iron-bearing...of Venezuela are situated within this province: Cerro Bolivar, Altamira, Rondon, San Isidro, Maria Luisa...Venezuelas befinden sich in dieser Provinz (Cerro Bolivar, Altamira, Rondon, San Isidro, Maria Luisa,... 140 km SW of Puerto Ordaz and 15 km SE of Cerro Bolivar (Fig. 1 and 2). It covers an area of 11 X 5...extracts iron ore from the Rondon, Altamira and Cerro Bolivar deposits, all situated north and northwest of |  | | Report (issue) | | (no. 37 on map). The El Callao mine was the most productive gold mine in the world during the latter...to a depth of 250 m at the underground Colombia Mine (being mined by MINERVEN in 1989) are estimated...as well understood. Hydraulic methods are used to mine the ore. Pedro Lira (Ministry of Energy and Mines...mineralization. Gold production in 1987 at the Cristina 5 mine in the Kilometer 88 district was 1,700 kg, from...the greenschist facies. Gold in the prospect at Cerro La Pinto (no. 58) is present in shear zones that |  | | Report (issue) | | DEPARTMENT OF THE INTERIOR GEOLOGICAL SURVEY GEOLOGIC PROVINCE MAP OF THE VENEZUELAN GUIANA SHIELD by Gary...column designed to explain Plate 1, "Geologic Province Map of the Venezuelan Guiana Shield." This map...exploration program. The text is written from the oldest province to the youngest so that the reader may follow... with quartz-potassium feldspar-plagioclase ± biotite ± hornblende ± orthopyroxene ± clinopyroxene ±...locally with pillowed lava, that commonly occur as biotite-chlorite±actinolite schists; amphibolites developed |  | | Journal (article/letter/editorial) | | haveconfidence; I personallyhavevisitedVenezuela and Bolivia and have workedon the major Brazilian depositsexcept...*Chlorite---iron- Sulfide rich with Nm about 1.66 *Sericite *Biotite *Chlorite---ironrich with Nm about 1.66 *Sericite...Gala tunnel, 1,340.7 m from portal. *Feldspar *Biotite *Yellow-brown *Feldqpar iron oxide 6. Corefrom...extensiveferruginousphyllite. In somelocalitiesthey tion. Biotite in seamsand cracks in carbonate layers in two are...the Nova Lima area and one [rom the S5o Bento gold mine near Santa suite. Barbara (Table 1). No signi |  | | Report (volume) | | of pseudokarst labyrinth on summit platform of Cerro Roraima, Venezuela. The pervasively cross stratified...C.A., in the Venezuelan Guayana Shield, Estado Bolivar and Estado Amazonas, Venezuela By Jeffrey C. Wynn...Maps of the Bochinche Mining District, Estado Bolivar, Venezuela By Jeffrey C. Wynn, Anne E. McCafferty... Estado Bolivar, Venezuela (Geophysical Exploration in the Bochinchito Area, Estado Bolivar, Venezuela)...Geophysics of the Sierra Verdun-Cerro Piedra del Supamo Area, Estado Bolivar, Venezuela By Floyd Gray, Fernando |  | Fern�ndez, A. C., H�rmann, P. K., Kussmaul, S., Meave, J., Pichler, H., Subieta, T. (1973) First petrologic data on young volcanic rocks of SW-Bolivia. TMPM Tschermaks Mineralogische und Petrographische Mitteilungen, 19 (3). 149-172 doi:10.1007/bf01167425 | Journal (article/letter/editorial) | | Springer-Verlag 1973 F r o m the Servieio Geoldgico de Bolivia (GEOBOL), the MineralogischPctrographisches Institut...Petrologic Data on Young Volcanic Rocks of SW-Bolivia h. Fernandez C., P. K. Iliirmann, S. Kussmaul,...element data of the young volcanic rocks of SW-Bolivia are presented. These widespread voleanies of Cenozoic...petrologieos de roeas volcdnicas modernas del S W de Bolivia Se presentan an~lisis de 33 elementos mayoritarios...Zn y Zr de rocas volc~.nieas modernas del SW de Bolivia. Estos volcanitos ampliamente distribuldos de edad |  | | Journal (article/letter/editorial) | | Vol. 58, 1963, pp. 218-236 THE IRON ORES OF CERRO BOI.IVAR, JOHN VENEZUELA C. RUCKMICK CONTENTS............................ 236 ABSTRACTS Cerro Bolivar, a high ridge in the savannaregion of southeastern...prevailed in the past, this rate suggeststhat the Cerro Bolivar ores have beendevelopingfor approximately 24...218 IRON ORES OF CERRO BOLIF.4R, I/ENEZUEL.4 219 Comparisonof the Cerro Bolivar ores and the Mesabi...to that currently producingthe Cerro Bolivar ores. INTRODUCTION CERRO Bolivaris a prominentridge in southeastern |  | | Report (issue) | | all of the Territorio Federal Amazonas, Estado Bolivar, and part of Estado Delta Amacuro. The publication...country and province borders clipped at the map neatline for plotting Venezuela province borders roads...coarsely crystalline, porphyritic granite and biotite granite commonly with rapakivi texture (about 1...is described as a granodiorite with 20 percent biotite, 30 percent quartz, 40 percent feldspar, and 10...SLAR imagery. ic - Carbonatite(?) intrusion of Cerro Impacto (Mesozoic to Early Proterozoic)-Inferred |  | | Report (volume) | | Bolfvar, Venezuela. View is southsoutheast toward Cerro Venado (left background). The waterfalls in the...steeply dipping dike (probably diabase) south of Cerro Autana, Territorio Federal Amazonas...............recumbent limb of iron ore, El Pao deposit, Estado Bolivar............................... 13, 14. Cross sections...sections showing: 13. Iron orebodies of Cerro Bolfvar, Venezuela........................................Colombia and Las Americas gold-vein systems, El Callao mine, Estado Bolfvar............... 18. Sketch map of |  | | Report (issue) | | ............... Figure 2. Simplified geologic province map of the Venezuelan Guayana Shield ...........isochron dates for granitic rocks of the Parguaza Province and its equivalents, Guayana Shield ................ 6 22 31 32 38 PLATES Plate 1. Geologic province map of the Venezuelan Guayana Shield ...........exhalative (Homestake-type) gold prospect in the Cerro La Pinto area. Granitic domes of the Supamo Complex...Grande area. This deposit and the carbonatite at Cerro Impacto, which is enriched in niobium, thorium, |  | Torró, , Cazorla, , Melgarejo, , Camprubí, , Tarrés, , Gemmrich, , Campeny, , Artiaga, , Torres, , Martínez, , Mollinedo, , Alfonso, , Arce-Burgoa, (2019) Indium Mineralization in the Volcanic Dome-Hosted Ánimas–Chocaya–Siete Suyos Polymetallic Deposit, Potosí, Bolivia. Minerals, 9 (10) 604 doi:10.3390/min9100604 | Journal (article/letter/editorial) | | Ánimas–Chocaya–Siete Suyos Polymetallic Deposit, Potosí, Bolivia Lisard Torró 1, * , Malena Cazorla 2 , Joan...Plaza del Bicentenario–Zona Central, La Paz 2314, Bolivia; diva.moshi@gmail.com Departament d’Enginyeria...maria.pura.alfonso@upc.edu Colegio de Geólogos de Bolivia, Edificio Señor de la Exaltación Nro. 4683, Av...1 y 2, Zona de Obrajes, Casilla 8941, La Paz, Bolivia; oarce.cgb@gmail.com Correspondence: lisardtorro@hotmail...In-bearing Ánimas–Chocaya–Siete Suyos district in SW Bolivia. Ore mineralization occurs as banded and massive |  | | Journal (article/letter/editorial) | | is proposed. A new geological profile of the Cerro Bolivar iron deposit has been constructed from the analysis...Felix, and those from San Felix to Cerro Bolivar and Ciudad Bolivar (Fig. 2). The exposuresalongtheseroadsare...layerswereobserved alongthe roadfromSanFelix to Ciudad Bolivar, asforexample at thesiteof sample No.26a. Thegneiss...thefeldspathic gneiss andtheamphibolite layers. At Ciudad Bolivar, outcrops of pinkish-gray, lnedium to coarse grained...rockwerefoundandidentified underthemicroscope as biotite-garnet gneiss.Thisisprobably thehigher metamorphosed |  | Cunningham, C. G., Zartman, R. E., McKee, E. H., Rye, R. O., Naeser, C. W., Sanjinés V, O., Ericksen, G. E., Tavera V, F. (1996) The age and thermal history of Cerro Rico de Potosi, Bolivia. Mineralium Deposita, 31 (5) 374-385 doi:10.1007/bf00189185 | Journal (article/letter/editorial) | | 1996 The age and thermal history of Cerro Rico de Potosi, Bolivia C.G. Cunningham 1, R.E. Zartman 2, E...Geologico de Bolivia (GEOBOL), Calle Federico Zuazo 1673, Casilla 2729, La Paz, Bolivia 7U.S. Geological...Geol6gico de Bolivia (GEOBOL), Calle Federico Zuazo 1673, Casilla 2729, La Paz, Bolivia Received: 14...1995/Accepted: 29 January 1996 Abstract. Cerro Rico de Potosi, Bolivia, is the world's largest silver deposit...occurring at the time of extensional fracturing at Cerro Rico and widespread volcanism in the adjacent Los |  | | Journal (article/letter/editorial) | | northwesternMexico and to the other province overlaps the Mexican copper province tungstenprovincesof the Cordillera...ratiomea- fore, apparentages from hornblendeand biotite surement,sampleswere dissolvedin an HF-HNO3- shouldrepresentthe...E1Jaralito, apparentagesfrom muscovite(400øC) and biotite 1946 MEAD,KESLER, FOLAND,ANDJONES (300øC)shouldbe...of plagioclase, adjacent quartz and scheelite. Bolivar and Wynne microcline,epidote,garnet,andclinopyroxene(Pea(1977)...muscovite(400øC), and myrmekiteand weak potassicalteration. biotite (300øC)wouldrepresentthe approximatebe- Skarns |  | | Report (issue) | | columbita tantalifera, area del Cano Aguamena, Estado Bolivar, Venezuela [Inclusions of tantalates of U, Th,...earths in a tantaliferous columbite, Cano Aguamena, Bolivar, Venezuela]: Quinto Congreso Latinoamericano de...y titanio en la zona del Cano Aguamena, Estado Bolivar, analizades con microsonda de electrones [Minerals...tantalum, and titanium in the Cano Aguamena Zone, Bolivar, analyzed microprobe], in Espejo C, A., Zozaya...Aspectos geoeconomicos del Cerro Impacto [Geoeconomical aspects of Cerro Impacto], in Petzall, C. (ed |  | | Report (volume) | | the NB-20-4 Quadrangle, Eastern Guayana Shield, Bolivar State, Venezuela I by Jeffrey C. Wynn and Gary...3:1960 1. Mines and mineral resources-Venezuela-Bolivar (State) 2. Geology-Venezuela-Bolfvar (State) I...Gary B. II. Title. Ill. Title: Guayana Shield, Bolivar State, Venezuela. IV. Series. QE75.B9 no. 1960...3-South Bochinche 11 Domain 4-Nuria 11 Domain 5-Cerro San Cristobal 11 Domain 6-El Callao Formation 11...Pastora geologic province, which is south of the Archean Imataca geologic province and north of the Gran |  | | Journal (article/letter/editorial) | | Science Publishers B.V. 354 ...,j,,'\ ElPao Cerro BOlivar ' GUINEa1 , L --.. VENEZUELA ~,', f ~...Archean province (the K e n e m a - M a n Domain), and an eastern Early Proterozoic province (the Baould-Mossi...ores of the Imataca Complex - - the E1 Pao and Cerro Bolivar, and the K e n e m a - M a n Domain iron formations...et al., 1989 ). Some may extend into the Amapel province of Brazil (Jorge Jo~o and Marinho, 1982; Lima...Phyllites, and associated volcanics. Trans-Amazonian Biotite Schists Muscovite-garnet schists ISantaLuzia Fm |
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