 | | 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...(presumably without the shrine) to a European in La Paz, Bolivui. Rolf Wein bought the specimen on July...Ph08pl,ophyllite; 5. 2 cm tall Cerro Rico, Potosi, B,atillo province, Potosi Andy Seibel col/action Jejf-SC...wp11ïżœ. Yaalte: 12.5 cm wide Siglo XX Mine, ,Uïżœ Bustillo province, Potosi Malty Zinn colkdknt (ex Marv |  | | 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, âFamous mineral localities: the Old Yuma mine,â 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 |  | | Journal (article/letter/editorial) | | silicicto basic,but in the oresas well. For example,at La Joya (Fig. âą), enargite-tennantite veinsoccurwith...âąlntimony I?eiâązs.--Most of the antimonydepositsof Bolivia belongto this group. They havebeenformedat depthsranging...quartz with stibnitecrystals. A vein at the Tarumita mine near Caracollo north of Oruro contains smallpocketsof...of scheelite with ankeriteand dolomite,and in the La Bombaminescheelite occurs Fâą. 2. Map of the Huanuni...the easternsideof the tin zone,in the Quimsacoya mine,the ore consistsof chalcedonicquartz with stibnite |  | | Report (issue) | | S. Geological Survey and Servicio Geologico de Bolivia in cooperation with the Trade Development Program...............xi Site Descriptions Department of La Paz..................................... 1 Department...the U.S. Geological Survey-Servicio Geol6gico de Bolivia as part of the Mineral Resource Evaluation of the...of the Servicio Geologico de Bolivia located in their main office in La Paz. All of the data presented...States, and the Servicio Geol6gico de Bolivia in La Paz, Bolivia. This report is an edited version of |  | Fogliata, A.S., BĂĄez, M.A., Hagemann, S.G., Santos, J.O., Sardi, F. (2012) Post-orogenic, Carboniferous granite-hosted SnâW mineralization in the Sierras Pampeanas Orogen, Northwestern Argentina. Ore Geology Reviews, 45. 16-32 doi:10.1016/j.oregeorev.2011.12.001 | Journal (article/letter/editorial) | | the La Quebrada granite in the Sierra de MazĂĄn, the Cerro Colorado granite in the Cerro Negro, and the...zircons from the Cerro Colorado and La Quebrada granites, located in the Cerro Negro and Sierra de MazĂĄn...SnâW mineralization in the Eastern Tin belt of Bolivia. © 2012 Elsevier B.V. All rights reserved. 1....Regional geological setting The Sierras de Velasco, Cerro Negro and Ancasti are located in the Sierras Pampeanas...Velasco (Fig. 1) is located in the northwest of the La Rioja city and is composed of mainly granitoids with |  | | Book | | Lower Paleozoic Sediments of the Cordillera Real, Bolivia H.-J. Schneider . . . . . . . . . . . . . . . ... 137 The Stratabound Kellhuani Tin Deposits, Bolivia B. Lehmann . . . . . . . . . . . . . . . . . .... . . . . . . . . 147 X Contents El Aguilar Mine: An Ordovician Sediment-Hosted Stratiform Lead-Zinc...Stratabound Iron Ores in the Silurian of Argentina and Bolivia M.-A. Boso and C. R. Monaldi . . . . . . . . .... . . . . . . . . . . . . . . . . 175 The "La Helvecia" Pb, Zn, and Barite Deposit, Argentina A. Brodtkorb |  | | 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 |  | Salazar, Eduardo, Barra, Fernando, Reich, Martin, Simon, Adam, Leisen, Mathieu, Palma, Gisella, Romero, Rurik, Rojo, Mario (2020) Trace element geochemistry of magnetite from the Cerro Negro Norte iron oxideâapatite deposit, northern Chile. Mineralium Deposita, 55 (3) 409-428 doi:10.1007/s00126-019-00879-3 | Journal (article/letter/editorial) | | Trace element geochemistry of magnetite from the Cerro Negro Norte iron oxideâapatite deposit, northern Chile...Cretaceous Cerro Negro Norte deposit located in the Chilean Iron Belt, northern Chile. The Cerro Negro Norte...actinolite; calcicâsodic alteration + sulfides; quartzâtourmaline and propylitic alteration) and a minor supergene...different types of magnetite are recognized at Cerro Negro Norte: type I, represented by high-temperature...chemical variation between magnetite types in Cerro Negro Norte is explained by a transition from high- |  | Quang, C. X., Clark, A. H., Lee, J. K. W., Guillen B., J. (2003) 40Ar-39Ar AGES OF HYPOGENE AND SUPERGENE MINERALIZATION IN THE CERRO VERDE-SANTA ROSA PORPHYRY Cu-Mo CLUSTER, AREQUIPA, PERU. Economic Geology, 98 (8) 1683-1696 doi:10.2113/gsecongeo.98.8.1683 | Journal (article/letter/editorial) | | OF HYPOGENE AND SUPERGENE MINERALIZATION IN THE CERRO VERDE-SANTA ROSA PORPHYRY Cu-Mo CLUSTER, AREQUIPA...JORGE GUILLĂN B. Sociedad Minera Cerro Verde S.A., Asiento Minero Cerro Verde-Uchumayo, Avenida Alfonso...Casilla 299, Arequipa, Peru Abstract The contiguous Cerro Verde and Santa Rosa porphyry copper deposits are...dates of 61.8 ± 0.7 (2Ï) and 62.0 ± 1.1 Ma for Cerro Verde, and 62.2 ± 2.9 Ma for Santa Rosa, representing...pediment, which itself is incised into the older La Caldera surface. Two populations, of ages 36.1 to |  | | Journal (article/letter/editorial) | | flank of the Cordillera Frontal in San Juan province,Argentina. Closeto San Franciscode los Andes are...fillingstagethe rockfragments werecemented by tourmaline, quartz, and pyrite. In the replacementstage...body was formed in the rim. Arsenopyrite and tourmaline were followed by bismuthinite,emplectjte,chalcopyrite...de los Andes mine is on the eastern referred to the San Francisco de los Andes mine as flankof the...brief report. truded by granodioritesrich in tourmaline. The breccia-pipe is characterized by a complex |  | | Journal (article/letter/editorial) | | journal homepage: www.elsevier.com/locate/oregeorev La JoseïŹna AuâAg deposit (Patagonia, Argentina): A Jurassic...Nacional de La Plata, Instituto de Recursos Minerales (INREMI), Calle 64 y 120, B1900FWA, La Plata, Argentina...Nacional de La Plata, Instituto de Recursos Minerales (INREMI), Calle 64 y 120, B1900FWA, La Plata, Argentina...AuâAg veins Patagonia Argentina a b s t r a c t The La JoseïŹna Jurassic epithermal AuâAg deposit located...mineralization ïŹuids. Such distinct features place the La JoseïŹna deposits in a hot spring environment with |  | | Journal (article/letter/editorial) | | Cenozoic ore deposits in the Chilean Andes between La Serena (30S) and Santiago (34S) include polymetallic...Cordillera, in particular Peru, northern Chile, and Bolivia, whose genesis is intimately related to the magma...deposits, which typify the eastern Cordillera in Bolivia and southern Peru, are uncommon between 30 and...porphyry copper-molybdenum, porphyry copper-gold, tourmaline breccia, stratabound epigenetic manto deposits...types in the study area, with the exception of tourmaline breccias not associated with the Miocene and |  | | Journal (article/letter/editorial) | | Germany AND LLUĂS FONTBOTĂ Section des Sciences de la Terre, UniversitĂ© de GenĂšve, Rue des MaraĂźchers 13... Chile. This belt includes the large Candelaria mine and a group of middle- and small-sized mines in...are on the order of 700 to 800 million metric tons (Mt) at 1.0 percent Cu. The ore occurs in veins, breccia...of magmatic origin. Anhydrite from the Candelaria mine paragenetically overlaps with chalcopyrite. Fluid...Candelaria deposit with mineable reserves of 470 Mt at 0.95 percent Cu, 0.22 g/t Au, and 3.1 g/t Ag (Marschik |  | Hervig, Richard L., Moore, Gordon M., Williams, Lynda B., Peacock, Simon M., Holloway, John R., Roggensack, Kurt (2002) Isotopic and elemental partitioning of boron between hydrous fluid and silicate melt. American Mineralogist, 87 (5) 769-774 doi:10.2138/am-2002-5-620 | Journal (article/letter/editorial) | | 1980). Boron isotopic analyses of coexisting tourmaline and muscovite were made under the assumption...inclusions from olivine crystals found in the Cerro Negro (Nicaragua) volcano were analyzed for their H2O...inclusions from two eruptions (1992, 1995) of the Cerro Negro volcano in Nicaragua are given in Table 3. The...melt inclusions from the 1992 eruption of the Cerro Negro volcano, Nicaragua Sample ID CO2 (ppm) K2O (wt%)...contents. Samples are from the 1992 eruption of the Cerro Negro volcano in Nicaragua (Roggensack et al. 1997) |  | Benavides, J., Kyser, T. K., Clark, A. H., Oates, C. J., Zamora, R., Tarnovschi, R., Castillo, B. (2007) The Mantoverde Iron Oxide-Copper-Gold District, III Region, Chile: The Role of Regionally Derived, Nonmagmatic Fluids in Chalcopyrite Mineralization. Economic Geology, 102 (3) 415-440 doi:10.2113/gsecongeo.102.3.415 | Journal (article/letter/editorial) | | Santiago, Chile Abstract Located in the Cordillera de la Costa of northern Chile, the mines of the Mantoverde...hosted by Middle to Upper Jurassic andesites of the La Negra Formation and diorites and monzodiorites assigned...Santo Domingo Cu-(Ag) TALTAL O 26 S CHANARAL Cerro Negro Cu-(Au) O 28 S A Punta del Cobre (Cu-Au)... CHILE AN O 30 S Romeral (Fe) OC Santiago LA SERENA FIG. 1 ARGENTINA AT L Los Cristales (Fe)...associated Fe oxide mineralization is uneconomic (e.g., La Candelaria: Ryan et al., 1995; Mantoverde: Vila et |  | | Journal (article/letter/editorial) | | view of the fact that the central Andean IOCG province is the worldâs youngest, is largely unaïŹected...geological and metallogenic settings of the IOCG province in the Coastal Cordillera of Chile and Peru and...Volcano-sedimentary rocks The Middle to Late Jurassic La Negra Formation, up to 5,000â10,000 m of subaerial...Cobrepampa, Peru Tocopilla, Chile Montecristo, Chile Cerro Negro, Chile Teresa de Colmo, Chile Mantoverde, Chile...Punitaqui, Chile 2 (gold zone only) El Espino, Chile 30 La Africana, Chile 3.3 1.7 2.7 1.0â1.2 0.86 de Haller |  | | Journal (article/letter/editorial) | | MARCH-APRIL, NO. 1922. 2 THE GEOLOGY OF THE BRADEN MINE, RANCAGUA, CHILE) WALDEIâąAR LINDGREN AND EDSON S...history of the Braden mine.................................. 77 Cerro Negro series ..................at Cerro de Pasco,Chuquicamata, Famatina and many others. The secondtype carriesquartz,tourmaline,pyrite...st of the survey. GeneralSituation.--The Braden mine, or E1 Mineral Teniente,as the Chileanscall it,...the mine is reached. The slopesare coveredby brush and small trees within a few miles of the mine; beyond |  | | Journal (article/letter/editorial) | | TocopillaâTaltal) and the central areas (CopiapĂł, La Serena, Santiago). The former is distributed in the...areas: Aricaâ Iquique, TocopillaâTaltal, CopiapĂł, La Serena and Santiago (Fig. 1). Most deposits of the...contrast to those of the central areas (CopiapĂł, La Serena, Santiago) distributed in the intracontinental...volcanicsedimentary piles (Camaraca, OfĂcina Viz and La Negra Formations), except the Mantos Blancos deposit...TocopillaâTaltal Jurassic (Pliensbachian â Aaleian) La Negra F., andesitic rocks with subordinate marine |  | | Conference Proceedings (Volume) | | Cover photograph: View of the Aitik open pit copper mine in the very north of Sweden. Mining operations started...ore-bearing intrusions in the Emeishan large igneous province ......................................... 975...RiverâUchiâOxford-StullâLa Grande-Eastmain superdomain: a new metallotect within the Superior Province .............two orebodies in the Jinchuan intrusion, Gansu province, NW China . . ....................... 1032 ...determination of PGE concentration of chromite by LA-ICP-MS: Towards a better understanding . . ..... |  | Quang, C. X., Clark, A. H., W. Lee, J. K., Hawkes, N. (2005) Response of Supergene Processes to Episodic Cenozoic Uplift, PedimentErosion, and Ignimbrite Eruption in the Porphyry Copper Province of Southern Peru. Economic Geology, 100 (1) 87-114 doi:10.2113/100.1.0087 | Journal (article/letter/editorial) | | and Ignimbrite Eruption in the Porphyry Copper Province of Southern PerĂș CHAN X. QUANG, ALAN H. CLARK...extended northwestward through field mapping to the Cerro Verde-Santa Rosa district (ca. 16° 30' S). The 40Ar-39Ar...38.8 Ma) and Posco (38.8 Ma) prospects and the Cerro Verde deposit (36.1â38.8 Ma) demonstrate that supergene...natroalunite at Cerro Verde, 26â27 Ma natroalunite at Santa Rosa, and 28.6 Ma jarosite at La Llave) to the...alunite and 21 Ma natroalunite at Cerro Verde, and 19.2 Ma jarosite at La Llave) and was plausibly responsible |  | Simmons, A. T., Tosdal, R. M., Wooden, J. L., Mattos, R., Concha, O., McCracken, S., Beale, T. (2013) Punctuated Magmatism Associated with Porphyry Cu-Mo Formation in the Paleocene to Eocene of Southern Peru. Economic Geology, 108 (4) 625-639 doi:10.2113/econgeo.108.4.625 | Journal (article/letter/editorial) | | al., 2008) at Cerro Verde-Santa Rosa (3,571 Mt at 0.40% Cu, 0.01% Mo), Cuajone (2,626 Mt at 0.47% Cu,...Toquepala (3,530 Mt at 0.47% Cu, 0.03% Mo) as well as the Quellaveco prospect (1,598 Mt at 0.57% Cu, 0...formed during the Paleocene and early Eocene. The Cerro Verde-Santa Rosa porphyry systems hosted by Proterozoic...alteration ages are 61.8 ± 0.7 and 62.0 ± 1.1 Ma for Cerro Verde and 62.2 ± 2.9 Ma for Santa Rosa (Quang et...Verde-Santa Rosa-Cerro Negro PaleoceneEocene porphyry Cu-Mo belt Cuajone-QuellavecoToquepala 20° La Colorado |  | | Journal (issue) | | of lea is the perfec t accompaniment to minerals. mine ral book and to writing. Yes. 1 a m an add ic t...a few o the rs ... but no tea! Tea is an As ian p la nt - Camelia s i11e11sis. if you must know - not...icates has long been know n th at de fi ed easy c la,s ifi catio n: the most fa miliar of the c. astro...astro phy lli tc, was descri bed in 1854. In the c mine ra ls. the silicate te tra hedra are arranged in...T he gene ral formu la (Pii lone n e t a l. 2003: Pii lo ne n. Mc Do nald. and La lo nde 2003) may be |  | | Report (chapter) | | metamorphic and intrusive rocks in a tectonic province called the Sierras Pampeanas (Fig. 1). The Palaeozoic...Unnamed pluton Z13-zircon Unnamed pluton Z 11-zircon La Puntilla Zl-zircon Fiambalfi gabbro-norite Z 16 zircon...Z15 monazite Ratones Z6 monazite Ratones Z4 zircon La Florida Z3 monazite Ref. References: 1, this study;...(quartz, biotite, muscovite, plagioclase, garnet, tourmaline, ilmenite) and dominant foliation (Sd) in the...crystallization age of c. 550 Ma may be estimated for the La Puntilla orthogneiss in the southwestern part of |  | | Journal (article/letter/editorial) | | copper-typedepositlocatedin northwesternArgentina in the province of Catamarca. It was investigatedby Cities Service...the Mi Vida deposit,a very 4,500-m summi.tof Cerro Negro. The area is significant porphyrycopperprospect...composed of whi,temuscovite- thermalactivity. tourmaline,rarely garnet-bearinggranite, are comThe ign... There are someindication.s central Catamarca province to the Mi Vida-Filo suggestinga ,relationbetweenthat...Paleozoic Stratified volcanic Andesireporphyry La Alumbrera San Lucas Quartz-andesite Tonalite Dacite |  | Chiaradia, Massimo, Banks, Dave, Cliff, Robert, Marschik, Robert, de Haller, Antoine (2006) Origin of fluids in iron oxideâcopperâgold deposits: constraints from ÎŽ 37Cl, 87Sr/86Sri and Cl/Br. Mineralium Deposita, 41 (6) 565-573 doi:10.1007/s00126-006-0082-6 | Journal (article/letter/editorial) | | and Sossego) that occur in the CarajĂĄs Mineral Province, Brazil, within rocks of either a continental...1988). Candelaria The Candelaria IOCG deposit (470 Mt at 0.95% Cu, 0.22 g/t Au, and 3.1 g/t Ag at a cutoff...estimated cumulative production and reserves exceeding 32 Mt at 1.7% Cu, 0.3 g/t Au, and 6 g/t Ag, is located...in the RaĂșl mine (veta Argentina) and the other (unnamed) close to the Condestable mine. El Romeral El...of several magnetiteâapatite deposits (e.g. Cerro Negro Norte, Los Algarrobos, Los Colorados) that form |
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