 | | Journal (article/letter/editorial) | | El Dragón Selenium Mineralization, Quijarro Province, Potosí, Bolivia Günter Grundmann 1 and Hans-Jürgen...Hans-Jürgen Förster 2, * 1 2 * Eschenweg 6, DE-32760 Detmold, Germany; grundmann.g@gmx.de Helmholtz Centre Potsdam...Potsdam German Research Centre for Geosciences GFZ, DE-14473 Potsdam, Germany Correspondence: forhj@gfz-potsdam...by volcanic-hydrothermal activities around the Porco caldera, formation of the mineralization involved...penroseite; vaesite; genetic sequence; El Dragón; Bolivia 1. Introduction Research on selenium minerals |  | | 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...ophyllite; 5. 2 cm tall Cerro Rico, Potosi, B,atillo province, Potosi Andy Seibel col/action Jejf-SC,m/.plwto...Yaalte: 12.5 cm wide Siglo XX Mine, ,U� Bustillo province, Potosi Malty Zinn colkdknt (ex Marv Rausch) Jase...Behnke, Joe Budd, Michael Canoy Rock Currier, Frank de Wit, Jordi Fabre, Mark Garcia, Tino Hammid Jaroslav |  | | Journal (issue) | | Enluminees, and also his second book, Collection de Planches (i.e. 120 plates, 60 colored and 60 uncolored)...oland Bounds, President, 315 Stam ford Dr., Newark, DE 19711; Tel: (302) 731-8407; e-mail: 25628@ udel.edu...livia Alfredo Petrov Casilla 1728 Cochabamba, Bolivia e-mail: alfredopetrov@earthlink.net Bill and Carol...Colorado 80020 e-mail: smith72@attglobal.net Bolivia, a landlocked nation three times as large as M...this gazetteer. INTRODUCTION Most people think of Bolivia as a land of great mountain ranges and high cold |  | | Report (issue) | | . . . . . . . . . . . . . . . . . . . . . 26 Bolivia . . . . . . . . . . . . . . . . . . . . . . . ... . . . . . . . . . . . . . . . . . . . . . 29 Bolivia . . . . . . . . . . . . . . . . . . . . . . . ... . . . . . . . . . . . . . . . . . . . . . 33 Bolivia . . . . . . . . . . . . . . . . . . . . . . . .... . . . . . . . . . . . . . . . . . . . 34 Cerro de Pasco . . . . . . . . . . . . . . . . . . . . . ... . . . . . . . . . . . . . . . . . . . . . 35 Bolivia . . . . . . . . . . . . . . . . . . . . . . . |  | | Journal (issue) | | Marilyn Lang (2020–2023) Walt Donovan (2020–2023) Noel De Dora (2021–2023) Neil B. Prenn (2020–2023) Peter...crystals of its purple variety, amethyst. The municipality of Amatitlán is centrally located within the...farmer who raised corn in the mountains near the municipality of Amatitlán. One day while turning soil, he...three great fluorite districts in Spain’s Asturias Province (the other two being La Collada and Villabona)...INTRODUCTION AND LOCATION Coal mining in Spain’s Asturias Province is a pillar of the local economy, practiced widely |  | | Journal (issue) | | Stefano The Nakhlak Mine, Anarak District, Esfahan Province, Iran...........................................Maria Fiske (2021) Dona and Kim Niederman (2021) Noel De Dora (2021-2022) Sean P. Sweeney (2021) John C. Medici...materials include the Harvard mine for purple apatite, Plumbago mountain for rose quartz crystals, Mount...and Pulsifer quarries on Mt. Apatite for tourmaline and purple apatite, the Consolidated Mining quarry...first introduced to mineral collecting by Leandro de Magistris, honorary curator at the Natural History |  | | Journal (article/letter/editorial) | | Universitesi] at 20:13 05 January 2015 Pseudomorphs from Bolivia JAROSLAV HYRSL Heverova 222 CZ-28000 Kolin Czech...Republic ALFRED PETROV casilla1728 Cochabamba Bolivia Figure 1. Map showing deposits discussed in the...the more unusual members of the mineral kingdom. Bolivia is a country well known to collectors as the only...tungsten mines in the altiplano and eastern Andes of Bolivia. Pseudomorphs of native copper, cuprite, chalcocite...Cochabamba, Bolivia. Both authors are also part-time dealers specializing in minerals from Bolivia. 410 ROCKS |  | | Book (edition) | | orange Chromite Zincochromite Gaudefroyite Apatite - (CaF) Willemite Ludwigite reddish brown to...internal reflections); Madenköy Mine, Çayeli, Rize Province, Black Sea Region, Turkey (sample: Halbach); XPL...grey; arg); Monte Narba Mine, San Vito, Cagliari Province, Sardinia, Italy; PPL B Same sample as above:...(West Wits Line), Witwatersrand field, Gauteng Province, South Africa; PPL B Intergrowth of electrum (yellowish...Bleida, Bou Azzer District, Tazenakht, Ouarzazate Province, Souss-Massa-Draâ Region, Morocco (sample: Goldmann/Oberthür); |  | | Journal (issue) | | ificad a m in e, C e rro R ico d e P o to si, Bolivia. R esearch C h a rita b le T ru s t sp e c im e... famous mineral localities: Cerro ;8.ico de £ofosi Bolivia ^ --------------------- Wendell E. Wilson...Petrov Casilla 1728 Cochabamba, Bolivia Cerro Rico ( “Rich M ou n tain ”) de Potosi is among the oldest and...(1519-1521) and Pizarro conquered Peru and what is now Bolivia (1531-1535). Tons of silver began to pour from...Mineral specimens considered to be from Cerro Rico de Potosi (except perhaps phosphophyllite) must bear |  | | Journal (article/letter/editorial) | | found in ores of a number of mines in the Pahuca de Soto district, Hidalgo, and in the Zacualpa district...(crystals to 2 cm) and the Millotingo mine, Huarochiri Province (somewhat dull crystals to 3 cm long). Stout simple...were found in mines of the Colquechaca district, Bolivia, where they occurred with equally impressive large...were found at one time in the Tornohuaico mine at Porco. A suite of Colquechaca specimens containing light-darkened...the San Carlos (crystals to 5 cm) and the Verdad de 10s Artistas mines, Hiendelaencina, Spain; several |  | | Journal (article/letter/editorial) | | 205 feet), Tocorpuri on the border of Chile and Bolivia is 6,873 meters (22,550 feet), and the highest...narrow to only 32 kilometers (20 miles), whereas in Bolivia they Dr. Terry C. Wallace is a professor of geosciences...09:23 14 October 2014 vivianites from Oruro, Bolivia; and fantastic pyrargyrites from Hauncavelica,...Pomerape (6,282 meters) on the border of Chile and Bolivia. These volcanoes, like hundreds of others in the...by one of the authors (TCW) and colleagues in Bolivia. in silicates and thus are quite viscous. This |  | | Journal (article/letter/editorial) | | Silicic Volcanic Rocks from the Morococala Field, Bolivia GEORGE B. MORGAN VI1∗, DAVID LONDON1 AND ROBERT...peraluminous volcanic rocks of the Morococala field, Bolivia, define a layered stratigraphy of basal andalusite-...Geological Survey and the Servicio Geologico de Bolivia. Polished thin sections were studied by polarized...geologic map of the Morococala volcanic field, Bolivia. Numbers indicate the locations of 85-series samples...sample 85-01, with inclusions of ilmenite (Ilm) and apatite (Ap). (b) Texturally late muscovite (Mus) phenocryst |  | | Journal (issue) | | Spanishlanguage Bocamina and the Catalan-language Revista de Minerales, and of course the Italian-language magazine...2009 a few excellent stephanite specimens from the Porco mine appeared at the Tucson show, and during the...specimens from Porco, with crystals to 2 cm, to the 20 IO Ste.-Marie-aux-Mines show (De Ascen~ao Guedes...2003b). BOLIVIA Porco mine, Agua de Castilla, Antonio Quijarro Province, Potosi Department. The Porco silver... Sichuan, China. Mim Museum collection; Augustin de Valence photo. (above right) Hemimorphite, 10.5 cm |  | | Journal (article/letter/editorial) | | in that such minerals as tourmaline, topaz, and apatite are assignedin abundanceto the intermediatevein...core and the elevationof the Cordillera Real of Bolivia mustbe of approximatelythe sameage. This may seemstartling...Negro Pabellon,Llallagua, Uncia, Avicaya, Potosi, Porco, Pulacayo, and many others, are found in or aboutintrusionsof...the Incas and later by the Spanishconquerorsat Porco, Potosi, Oruro, and other places. These ores were...was followed by the introductionof solutionswhich de- positedquartz primarily. This quartz filled interstitialspaces |  | | Journal (article/letter/editorial) | | C. After the Punic Wars, Iberia became a Roman province, and huge quantities of silver flowed from Spain...fii and quenching method. From Georgius Agricola, De Re Met&u (1556). Spanish silver mining resumed in...classic Natwa Fosilium in 1546. This work and his De Re Metullicu (1556) are invaluable sources of information...discovered. In 1535, Pizarro conquered Peru and Bolivia, and the incredible deposits of Potosi were discovered...silver mined up to that point in history, and Bolivia and Peru had also produced substantial amounts |  | | Journal (article/letter/editorial) | | and Tourmaline-Hornfels fl'om Tasna. Fluorite. Apatite. Cupriferous Miargyrite from Tatasi. Miargyrite...manager in Bolivia. Another collection , which may be specially mentioned, was brought from Bolivia by Sir...silver from the Cobrizos mine at San Cristobal in province NorLipez, have been presented by Sefor F. Avelino...J. Hooper, General Manager to the Compa~ia Miners de Oruro, for a very large and magnificent specimen...Portugaletc in the province Sud-Chichas, and from the tin and bismuth mines at Tasna in province Nor-Chichas |  | | Journal (issue) | | Appiani) " 56 4 8 12 16 20 24 Foto di copertina: “Apatite” (di 0,4 mm) con magnetite, “mica” e “pirosseno”...Romano pubblica la seconda, e ultima, parte dei numeri de Il Cercapietre risalenti ai primi anni di vita dell’Associazione...pitiglianesi; pezzo da valutare alla pari con la Apatite del dr. Pierini e con la Titanite del dr. Del Caldo”...Bassano 12. Minerali presenti in Bassano 12 “Apatite” Si trova molto spesso insieme ad altri minerali...(figg. 5 e 15). Quanto detto fa ipotizzare che l’“apatite”, sia uno degli ultimi minerali a essersi formato |  | | Journal (article/letter/editorial) | | affinity:"anorogenic"in plate interiors,Fe oxides-apatite (Kiruna,Sweden; Bafq,Iran) andFe-Cu-U-Au-raree... low from these events and their aftermaths. Ore de- UTFLOW SHEET-• positscan form in and abovea risingmagmabody...magmaticpro- alkalic, associated with Fe oxide-apatite(e.g., Kicesses take precedence.To qualifyaslarge...a tuff papershadexaminedmineralizationat Creedein de- matrix,showthat catastrophic eruptionof tuff, fountail...syenite,andtheir volcanicequivalents with Fe oxide-apatite deposits haslongbeenstudiedat Kiruna,Sweden,but |  | | Report (issue) | | Committee Members John E. Larson, BHP-Utab, S.A. de C.V., Hermosillo, Sonora, Mexico Greg E. McKelvey...of the regional framework and ore genesis from Bolivia, Brazil, Chile, Mexico, Peru, and the Venezuelan...western Andean cordillera, southern Peru, western Bolivia, and northern Chile Edwin H. McKee (USGS), Peter...deposition at the Cerro Rico de Potosi Ag-Sn and Porco Ag-Zn-Pb-Sn deposits, Bolivia Albert Hofstra 1, Luis...Orlando Sanjinel (1USGS and 2Servicio Geologico de Bolivia), La Espanola prospect-A multiple intrusive porphyry |  | | Journal (issue) | | Cassedanne Instituto de Geociencias Cidade Universitaria Ilha do Fundao. 29910 Rio de Janeiro, Brazil INTRODUCTION...recently been discovered. SAO MIGUEL DE PIRACICABA DEPOSIT The Sao Miguel de Piracicaba deposit, in the state...and rare monazite. Over the years the Sao Miguel de Piracicaba pegmatites pro duced at least 13 metric...1. Crystal drawings of phenakite from Sao Miguel de Piracicaba (Goldschmidt, 1920) 107 Figure 2. Translucent...Primeira pesquisas com um berilometro em jazidas de Minas Gerais. Uso do aparelho. Min. et Met., 50, |  | | Book (edition) | | Reflections: Reflectance [%]: Anisotropy: Pleochroism: apatite-bearing actinolised diopsidite white with pinkish...(yellowish to blue grey anisotropy); Huallatani Mine, Bolivia [c]; Nic. + C Twinned skeletal bismuth (distinct...(dark grey); Dolores I Mine, Chañarcillo, Copiapó Province, Chile [a]; Nic. // Anhedral domeykite as fissure...(dark grey); Dolores I Mine, Chañarcillo, Copiapó Province, Chile [a]; Nic. // Domeykite (dark grey), safflorite...reflections); Dolores I Mine, Chañarcillo, Copiapó Province, Chile [a]; Nic. + 94 Domeykite A 60 μ C |  | | Journal (article/letter/editorial) | | of volatiles on Titan and Saturn’s other moons (Porco et al. 2005). Observations of hydrous phases in...(Fig. 8a), mineral inclusions (likely rutile or apatite; see Fig. 8d), and single-phase inclusions (SPI...Langenmuehle), and d) mineral inclusions of rutile and apatite (sample RIE030803–1.1 collected from Lehburg) were...Merrill R. B. New York: Pergamon Press. pp. 343–404. Porco C. C., Baker E., Barbara J., Beurle K., Brahic A |  | | Report (issue) | | GEOLOGICAL SURVEY MINERAL RESOURCE BIBLIOGRAPHY FOR BOLIVIA by Keith R. Long1 , Jane S. Ciener2 , Fernando...U.S. Embassy, La Paz, Bolivia. 4 Servicio Geologico de Bolivia, La Paz, Bolivia INTRODUCTION This bibliography...references useful for a mineral resource assessment of Bolivia. In its present form it is a nearly exhaustive...resources, economic geology and areal geology of Bolivia. References pertaining to mineralogy, geochemistry...(Federico), 1950, Nuevas publicaciones geologicas sobre Bolivia: Mineria Boliviana, v. 7, n. 53, p. 7-8. Earth |  | | Book | | Consulting Geologist-Geophysicist Mamer, Gr. D. de Luxembourg With 106 Figures and 95 Tables =e in...impetus in geological interest shown, e. g. Fernando de Noronha, Trindade, Sao Tomé, Principe, Ascension...some worth may attach to what follows. Mamer, Gr. D. de Luxembourg Raout C. MircHett-THomé Table of Contents...Brazilian Islands General Geology Chapter 3: Fernando de Noronha. General Physical Climate Features Geology...Petrochemical Character of the Fernando de Noronha Province... Comparisons Petrogenesis # Age of the |  | | Journal (article/letter/editorial) | | and northern Italy (e.g., Nadeau et al., 1993; Ricq-de-Bouard, 1996, Fig. 39; D’Amico et al., 1995; Compagnoni...‘‘green stones’’, because of their colour (e.g., Ricq-de-Bouard & Fedele, 1993). The ‘‘green stones’’ mainly...outcrop, in Vallone Bulè and Vallone Chiot del Porco leading upstream to Punta Rasciassa. The petrographic...jadeite-rich pyroxene with accessory zircon and apatite. Locally, the Na-pyroxene includes a cloudy core...and quartz with accessory zircon (Fig. 6d) and apatite. Although the pyroxene occurs as crystals of shape |
|
