 | | Journal (article/letter/editorial) | | com/locate/precamres The Choco 10 gold deposit (El Callao, Bolivar State, Venezuela): Petrography, geochemistry and U–Pb...June 2014 Available online 7 July 2014 Keywords: El Callao Choco 10 gold deposit Petrography Hydrothermal...Shield a b s t r a c t Located in the El Callao Mining District (Bolivar State), Choco 10 is one of the...the most important gold deposits in Venezuela. The deposit occurs in the greenstone belt of the Pastora...composed of two different formations. The lower El Callao Formation is composed of a Metabasalt Unit, mostly |  | | Report (issue) | | SURVEY MINERAL OCCURRENCES OF THE GUIANA SHIELD, VENEZUELA by Gary B. Sidder1 Open-File Report 90-16 1990...Principal mining districts, mines, and mineral occurrences in the Guiana Shield, Venezuela.............27 Mineral occurrences of the Guiana Shield, Venezuela.... in pocket INTRODUCTION The U.S. Geological...of Venezuela. This text accompanies the map "Mineral Occurrences of the Guiana Shield, Venezuela" (Plate...resource assessment and exploration program. Venezuela currently produces three metallic minerals (gold |  | | Report (volume) | | Quadrangle, Eastern Guayana Shield, Bolfvar State, Venezuela U.S. GEOLOGICAL SURVEY BULLETIN 1960 Mineral...Quadrangle, Eastern Guayana Shield, Bolfvar State, Venezuela By JEFFREY C. WYNN and GARY B. SIDDER U.S. GEOLOGICAL...Quadrangle, Eastern Guayana Shield, Bolivar State, Venezuela I by Jeffrey C. Wynn and Gary B. Sidder. p. em...Mines and mineral resources-Venezuela-Bolivar (State) 2. Geology-Venezuela-Bolfvar (State) I. Sidder,...Title. Ill. Title: Guayana Shield, Bolivar State, Venezuela. IV. Series. QE75.B9 no. 1960 [TN54] 557.3 s-dc20 |  | | Report (volume) | | labyrinth on summit platform of Cerro Roraima, Venezuela. The pervasively cross stratified quartzose of...Docs. no. : 119.3:2124 1. Geology Venezuela. 2. Minerals Venezuela. 3. Guayana Shield. I. Sidder, Gary...Guayana Shield, Estado Bolivar and Estado Amazonas, Venezuela By Jeffrey C. Wynn, Gary B. Sidder, Floyd Gray...Geologic Maps of the Bochinche Mining District, Estado Bolivar, Venezuela By Jeffrey C. Wynn, Anne E. McCafferty...Exploration Geofisica en el Area de Bochinchito, Estado Bolivar, Venezuela (Geophysical Exploration in |  | | Journal (article/letter/editorial) | | inclusions and stable isotope study of quartz-tourmaline veins associated with beryl and emerald mineralization...neoformed biotites—Hassane Nachit, Abderrahmane Ibhi, El Hassan Abia, and Mohcine Ben Ohoud Middle Miocene...436 Vol. 17, No. 6, 2005 905 EXPLORATION AND MINING GEOLOGY Vol. 13, Nos. 1–4, 2004 Special Issue on...Nanisivik Mine—A profitability comparison of actual mining to the expectations of the feasibility study—N...Valley-type ore formation in the Tri-State Zn-Pb district—M.S. Appold and J.A. Nunn 251 Diamond formation |  | | Report (issue) | | -Soviet research on mineral deposits in the Noril'sk district is underway. Seventh Annual V.E. McKelvey Forum...represents an important center for the United States mining industry. Such an environment should enhance the...either completed or in progress in Canada, Mexico, Venezuela, Ecuador, Bolivia, Peru, Chile, Argentina, Saudi...North Amethyst vein system and the Creede mining district, Colorado Nora K. Foley and Robert A. Ayuso...exploration Jack Parry, Senior Vice-President, Newmont Mining Corporation and Newmont Gold Criteria for investment |
|
