 | | 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 |  | | 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 |  | | 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) | | 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 |  | | 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...gratifying. One young mineralogist, a former student of mine, said that although he had never met Mike, he had...1999 famous mineral localities: Cerro ;8.ico de £ofosi Bolivia ^ --------------------- Wendell E...85750 Alfredo Petrov Casilla 1728 Cochabamba, Bolivia Cerro Rico ( “Rich M ou n tain ”) de Potosi is among...(1519-1521) and Pizarro conquered Peru and what is now Bolivia (1531-1535). Tons of silver began to pour from |  | | 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...resorbed quartz and broken plagioclase replaced by albite. Groundmass mainly devitrified glass. Traces of...SLAR imagery. ic - Carbonatite(?) intrusion of Cerro Impacto (Mesozoic to Early Proterozoic)-Inferred...batholith. These granites are seen west and north of Cerro Duida (4°00' N., 65°30' W.) in the Amazonas Federal |  | | 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...Injection gneisseswere observedeast of Ciudad Bolivar, for example,andat severalplacesalongthe roadfrom |  | | Journal (issue) | | BARITE 13 cm, from Jebel Ouichane, Sagangane, Nador Province, Oriental Region, Morocco. Doug Fiske collection;...row, from left: Euclase, 2.3 cm, from the Gachalá mine, Guavió-Guatéque mining district, Boyacá Department...photo. Fluorite with quartz, 11 cm, from Fujian Province, China. Keith & Diane Brownlee collection; Joe...from Katlang, Mardan Dist., Khyber Pakhtunkhwa Province, Pakistan. Jeff Starr collection; Joe Budd photo...photo. Tanzanite, 7.6 cm, from the Merelani mine near Arusha, Tanzania. Barry & Beth Kitt collection; James |  | | Journal (article/letter/editorial) | | haveconfidence; I personallyhavevisitedVenezuela and Bolivia and have workedon the major Brazilian depositsexcept...the Nova Lima area and one [rom the S5o Bento gold mine near Santa suite. Barbara (Table 1). No signi...side, the Urucum, Mato Grosso,Brazil, and Mutun, Bolivia information derived must be acceptedwith some...silicaoccursto considerable depth. The Serrania de Mutun (Bolivia) has been incoverednot lessthan 1,000 squarekilometers...in bold relief above flat lowlands underlain Bolivia containbetween45 and 56 weightpercentFe, 12 to |  | | 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 (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 |  | | 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, |  | Naranjo, Andrés, Horner, Johannes, Jahoda, Rudolf, Diamond, Larryn W., Castro, Adriana, Uribe, Aura, Perez, Carolina, Paz, Hermel, Mejia, Carlos, Weil, Jonas (2018) La Colosa Au Porphyry Deposit, Colombia: Mineralization Styles, Structural Controls, and Age Constraints. Economic Geology, 113 (3) 553-578 doi:10.5382/econgeo.2018.4562 | Journal (article/letter/editorial) | | quartz and pyrite with centimeter-wide halos of albite-sericite-pyrite overprinting all other alteration...an anomalous zone related to the San Antonio gold mine, where minor amounts of gold were exploited from...accreted remnants of the Caribbean large igneous province, which collided with South America at ~75 Ma (Villagómez...Schistose wall rock with bands of secondary biotite and albite patches. N. Contact breccia (SBX). O. Free Au COL010...distinguished macroscopically (Fig. 7): Sodic-calcic (albite + actinolite ± epidote; Fig 7A); 3-D model of |  | | Journal (article/letter/editorial) | | com/locate/precamres The Choco 10 gold deposit (El Callao, Bolivar State, Venezuela): Petrography, geochemistry and...c t Located in the El Callao Mining District (Bolivar State), Choco 10 is one of the most important gold...of the Pastora Supergroup, a lithostratigraphic Province of the South American Guyana Shield. The Choco...low salinity fluids to give quartz + ankerite ± albite ± pyrite veins, surrounded by strong sericite +...(Velásquez et al., 2011, with refs.): (1) the Pastora Province, a Trans-Amazonian Paleoproterozoic (∼2.2–2.0 |  | | Thesis/Dissertation | | Non-Metallic Mineral Deposits in the La Paz Region, Bolivia Department of Civil, Environmental and Natural...Non-Metallic Mineral Deposits in the La Paz Region, Bolivia Ariana Zeballos Ore Geology Geological, Geochemical...Non-Metallic Mineral Deposits in the La Paz Region, Bolivia Ariana Zeballos Luleå University of Technology...a promising source of economic development in Bolivia where the mining industry’s main focus is on metalliferous...deposits. The industrial mineral resources in Bolivia are of large quantity, even though they remain |  | | Catalog/List | | silvery platy mass in matrix (San Jose Hine,Oruro, Bolivia) lem E4 Very rich 2cmpiece ElO 226 LOPRITE Ce la...Be Silicate.2rn to Ji. browncrystal section in Albite with Ilmenite a d or Magnetite. (Tuftane Evje Nor...Attractive blue masses in and on pink BÅRYTES.(BlairLogie Mine, n~ar Stirling, Scotland) lxl El. 50 202 COPPER...other Cu minerals on matrix. (30'level Gold Hill Mine Utah USA) lem E4 309 PLANCHEITE Cu/8 Si/8 0/22 pure...spheres on matrix. (16 Level, SimmsLode, Geevor Mine, St Just, Cornwall) l, x H El.50 l x l, El 530 BAYLDONITE |  | | Report (volume) | | undinamarca________________________________________________ Cerro de Cobre prospect__________________________________...mine________________________________-_______ Guayaquil mine ___________________________________________ Cau...11. Plan and sections of the lower adits, Quindfo mine, municipio of Cajamarca, Tolima, Colombia____________________...Map and sections of the Alumbral quartz crystal mine, municipio of Muzo, Boyacd, Colombia_-________--___-_-_____...In pocket FIGUEE 2. Sketch of the Quindfo mercury mine area, municipio of Cajamarca, Tolima, Colombia_ |  | | Journal (issue) | | level of the underground mine was refurbished to accommodate visitors, showing mine workings dating from...village of Almadenejos we find: The Vieja Concepción mine. Here it is possible to visit part of the historic...(dating from 1755 to 1757). The Nueva Concepción mine. The Baritel de San Carlos (San Carlos shaft house)... Also included is the Refugio shaft and various mine buildings. HISTORY AND MINING Archeological remains...(in Badajoz Province) and the Dolmen de Monteleiro (Castilleja de Guzmán, Sevilla province) have shown |  | | Catalog/List | | pinkish fine grained mass in Calcite.(Dark Star Mine,Ravalli County, Montana USA) 1 x 14 £2.50 1x1 £4...guite rich black masses in matrix (Union Carbide Mine, Wilson Springs Garland County, Arkansas USA) 1x1...fairly sparse, green crusts on matrix. (San Miguel Mine Moctezuma Mexico) 1cm piece £ 5 5mm £3 WITH UNUSUAL...CO/3 0 Quite rich yellow crusts on matrix. (Outpost Mine, San Domingo Wash Maricopa County Arizona) Ixliins...MINERAL !I dark red micro's on matrix. (Getchell Mine,Humboldt Co . Nevada USA) 5mm £4 up to 1.5cm £7 |  | | Journal (article/letter/editorial) | | occured as groups of crystals heavily investing albite, in segments almost a foot square. "But another...appear accordian shaped. Associated are secondary albite crystals, and altered cubes of pyrite. DELAWARE...and the only nearby collecting locality is a strip mine (coal) which are common to this area. This yields...Transvaal (South Africa) possesses the richest diamond mine in the world, for over 35 years existence of diamonds...a specimen that comes from trie famous fire clay mine at Frostburg, Allegany Co., Md. The specimen (a |  | | Journal (article/letter/editorial) | | south of E1 Pao mine (Fig. 1 ). The granitic rock units of the Supamo-Pastora Province for which 2.25-2...Proterozoic age granite-greenstone, Supamo-Pastora Province by the Guri mylonite zone east of the Caroni River...1967), but also further south in the SupamoPastora Province (Klar, 1979). Analytical procedures Hand samples...freshly exposed mining excavation at the E1 Pao Fe mine (Kalliokoski, 1965). Hand samples of mafic granulite...and hypersthene-bearing mafic granulite at E1 Pao mine (28 in Fig. 2) yields an integrated date of 1963 |  | | Journal (article/letter/editorial) | | abandoned diamond mine near Murfreesboro, Pike Co., Ark. Murfreesboro has the only diamond mine in the United...United States and though the mine is no longer in operation it has been "opened up" as a tourist attraction...close by, quartz crystals, of odd, ago at the same mine in Arkansas. Howard A. Millar, Manager, Crater of...early. "Near Eddyville in Pope Co., 111., is an old mine dump, its name I could not find, we obtained some...blue white color and perfect. Then on to Crystal mine (in Hardin Co.) between Rosiclare and Golconda. |  | | Journal (article/letter/editorial) | | generation perthitic was microcline showing albite mostly texture into has ambiguous during recognized...and gneisses, are bounded on the north by the Bolivar, Atan quez and central batholiths, and south by...hydrothermal products. (II) Intrusive rocks (a) The Bolivar batholith consists of quartz diorite to granodiorite...batholith. diffractometer inner Fig represent Bolivar coming area. in rocks. of 8, as numerals... II absent. the granites of the is of Bolivar batholith K-feldspar and (c) of rocks the |  | | Catalog/List | | Be Silicate.2mm to 3mm brown crystal section in Albite with Ilmenite and or Magnetite. (Tuftane Evje Norway)...Cu UO PO/4 slightly radioactive. (Old Gunislake Mine Cornwall) a) green 3mm area on ropk, £3 ( b) IxhaJ...Phlogopite Mica. (Possibly slightly radioactive)(Palabora Mine,S.Africa lxl £5 1x2 £10 WITH UNUSUAL ELEMENTS...sections in matrix with Eudialyte.Rare not Rich (Umba Mine,Lovozero Massif,Kola Russia) lxl £4 1x2 £7.50 239...silvery areas in matrix with Tellurite. (La Bambolla Mine Moctezuma, Sonora Mexico) lxl £10 14 x 54 ins £5 |  | | Journal (issue) | | Agness to the Eden Valley Road just north of Mount Bolivar near the Coos. Curry. and Douglas County boundaries...the area to 1.316 m (4,319 ft) on top of Mount Bolivar. The area includes about 19 km (12 mil of the Rogue...Peaks, and on the south slope and top of Mount Bolivar (Figure 4). The section of sheeted dikes exposed...1, JULY 1980 Figure 4. South flank of Mount Bolivar. Dikes trend from (he lower righ( of the pholOgraph... Preliminary mapping in the vicinity of Mount Bolivar (on the ridge, SW iii sec. 14) indicates several |
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