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| Maestrichtian to Paleocene age (the Sierra de los Organos zone), which in turn contain gigantic exotic fragments...Esperanza; 10) Alturas de Pisarras, 11) Sierra de los Organos; 12) Cangre. INTERNATIONAL GEOLOGY REVIEW been...(Alturas and Cangre zones), 6) core (Sierra de los Organos zone); 7) principal imbricate-thrust surfaces....Central Cuba includes hydrothermal ore deposits of gold and copper, magmatic chromite deposits and, in the...of a rare-metal (tungsten, tin) and a distinctive gold-arsenopyrite mineralization within them. The potential |
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| . . . . . . . . . . . . . . . . . . . . . . 23 Gold . . . . . . . . . . . . . . . . . . . . . . . .... . . . . . . . . . . . . . . . . . . . . . 23 Colombia . . . . . . . . . . . . . . . . . . . . . . ..... . . . . . . . . . . . . . . . . . 24 Alluvial Gold Mining . . . . . . . . . . . . . . . . . . . . ... . . . . . . . . . . . . . . . . . . . . . 33 Colombia . . . . . . . . . . . . . . . . . . . . . . .... . . . . . . . . . . . . . . . . . . . . . . 47 Gold . . . . . . . . . . . . . . . . . . . . . . . . |
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| UNITED STATES DEPARTMENT OF THE INTERIOR GEOLOGICAL SURVEY Mineral Deposit Grade-Tonnage Models II By...asbestos 23 Zinc-lead skarn 26 Volcanogenic gold 32 Komatiitic nickel 37 Volcanogenic manganese...manganese 46 Bedded barite 51 Low-sulfide quartz gold 54 Silica-carbonate mercury 59 Hot springs mercury...Carbonate-hosted replacement manganese 68 Platinum-gold placer 73 Sedimentary manganese 81 Marine phosphate-upwelling...were prepared for an assessment of the country of Colombia, but the models are generalized and applicable |
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| By Arthur Montgovzery .... MOUNTAINS OF SALT IN COLOMBIA ................................................POPOCATEPETL. By Paul E. Killinger .............. GOLD IN CUBA ................. ••-···. ·········· .....A LOCALITY NEAR WASHINGTON * By JAMES H. BENN Department of Geology, U. S. National Museum The zeolites...to the feldspars but they are un- the Mineral Department of the British Museum, has made some very thorough...wide. The Blue Star in OUI window has truned to Gold. Yet. I thought this might be of interest to the |
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| inclusions in serpentinite mélange. Sierra de los Organos. Reported age 66 Ma. Recalculated here based on...inclusions in serpentinite mélange. Sierra de los Organos. Reported age 113 Ma. Recalculated here based on...serpentinite and mélange zones; Sierra de los Organos] Location not reported, coordinates here inferred...serpentinite and mélange zones; Sierra de los Organos] Location not reported, coordinates here inferred...serpentinite and mélange zones; Sierra de los Organos] Location not reported, coordinates here inferred |
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| UNITED STATES DEPARTMENT OF THE INTERIOR J. A. Krug, Secretary GEOLOGICAL SURVEY W. E. Wrather, Director...COMMITTEE ON SCIENTIFIC AND CULTURAL COOPERATION, DEPARTMENT OF STATE Geologic Investigations in the American...(27a)____.-__-__._.__.___-.-..___..___._ 242 Organos deposits (29)______________________________________...by the Geological Survey, of the United States Department of the Interior, in cooperation with the Direcci6n...and Cultural Cooperation of the United States Department of State, and was greatly facilitated by the |
 | Burgunker, Mark E., Evitt, William, Meyerhoff, A. A., Hill, B. L., Sokoloff, V. P. (1964) Review Section. International Geology Review, 6 (1) 143-167 doi:10.1080/00206816409474609 | Journal (article/letter/editorial) |
| assigned to the San Cayetano Formation, Sierra de los Organos, Pinar del Rio Province, western Cuba, may be Jurassic...published summary of the geology of the Sierra de los Organos. KrOmmelbein found, in what is believed to be the...San Cayetano, north flank of the Sierra de los Organos. Such relatively undisturbed, unfaulted sequences...sequences are rare in the Sierra de los Organos, a fact which has been the primary reason for the confusion...BEITRAGE ZUR GEOLOGISCHEN KENNTNIS DER SIERRA DE LOS ORGANOS (CUBA): Zeitschrift Deutsch. Geol. Gesell, v. 114 |
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| datingback to preInca and Inca times, when copper, gold, silver, tin, lead, and mercury, as well as a host...Francisco Pizarroconsisted of three roomsfull of gold andsilverobjects.This did not include the preciousmetals...which wasmostlyusedfor the treatment of silver and gold ores in Peru, Bolivia, and Mexico (RodriguezHoyle...nearly 400 treatment plantsfor silver and 70 for gold. By 1805 the yearly silver productionwas 125 tons...igh inflation Company,located in Quiruvilca,the gold minesof rates), labor problems,increaseddifficultiesin |
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| subject to oxidation on PrevlO�s to analYSIS the organos?1 bad been allowed Test : P�t 40 c.c. of the water...es, are now conSIdered to be aqua regia and the gold was determined ill the u"ual remains in the sugar |
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| subject to oxidation on PrevlO�s to analYSIS the organos?1 bad been allowed Test : P�t 40 c.c. of the water...es, are now conSIdered to be aqua regia and the gold was determined ill the u"ual remains in the sugar |
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| subject to oxidation on PrevlO�s to analYSIS the organos?1 bad been allowed Test : P�t 40 c.c. of the water...es, are now conSIdered to be aqua regia and the gold was determined ill the u"ual remains in the sugar |
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| Washington 1968 C I RC U LA R 553 United States Department of the Interior STEWART L. UDALL, Secretary ...generally mined for their content of silver and gold and that make up a group commonly known as epithermal...base-metal sulfides and noteworthy amounts of silver and gold. Characteristic gangue miner a 1 s include quartz...huebnerite. The next higher group, precious metal (gold-silver) (Nolan, 1933), is characterized by the same...sulfide miner a 1 s represents the preciousmetal(gold-silver)group defined by Nolan(1933). The fluorite |
 | Ogorodova, L. P., Melchakova, L. V., Vigasina, M. F., Gritsenko, Yu. D., Ksenofontov, D. A., Bryzgalov, I. A. (2019) Thermodynamic Properties of Fluorapophyllite-(K) and Hydroxyapophyllite-(K) Geochemistry International, 57 (7) 805-811 doi:10.1134/s0016702919070097 | Journal (article/letter/editorial) |
| data on the thermal behavior of apophyllite from a gold deposit of North Kazakhstan, revealed two types...optimal conditions of synthesis of apophyllite-based organos- 805 806 OGORODOVA et al. Table 1. Chemical |
 | Hodges, C.A., Cox, D.P., Singer, D.A., Case, J.E., Berger, B.R., Albers, J.P. (1984) U.S. Geological Survey-INGEOMINAS mineral resource assessment of Colombia. Open-File Report Vol. 1984 (84-345) US Geological Survey doi:10.3133/ofr84345 | Report (issue) |
| UNITED STATES DEPARTMENT OF THE INTERIOR GEOLOGICAL SURVEY U.S. GEOLOGICAL SURVEY-INGEOMINAS MINERAL...MINERAL RESOURCE ASSESSMENT OF COLOMBIA By Carroll Ann Hodges, Dennis P. Cox, Donald A. Singer, James E. Case...Summary 1 Introduction 2 Geologic framework of Colombia 5 Selected deposit types (classification number...chromite (1.1) 7 Porphyry copper molybdenum-rich; gold-rich (2.1, 2.2) 9 Molybdenum porphyry climax type;...deposits (4.8) 28 Epithermal gold, quartz-adularia type (5.4) 30 Hot springs gold-silver deposits (5.6) |
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| subject to oxidation on PrevlO�s to analYSIS the organos?1 bad been allowed Test : P�t 40 c. c. of the water...es, are now conSIdered to be aqua regia and the gold was determined ill the u"ual remains in the sugar...from hyoscine, being the least soluble of these gold salts, is notahly greater in quantity, and it more |
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| (972) 448-4626 e-mail: editor@rockngem.com ART DEPARTMENT LINDSEY JONES Art Director RAVIJOT SINGH Designer...discarded waste rock on the dumps of many California gold mines was rich in these two tungsten minerals. It...mine, we camped in a very scenic area, Sierra de Organos National Park. 34 www.rockngem.com Rock & Gem...hosts topaz crystals. We were not aware that the Organos rhyolite was topaz-bearing rock. Luckily, ant colonies...a re-discovery—was of the emerald deposits of Colombia. Of course, the indigenous peoples of South America |
 | Gómez-Vivo, David, Gervilla, Fernando, Piña, Rubén, Hernández-Díaz, Rebeca, Azor, Antonio (2021) Gold in the Farallones Block of the Shale-Hosted, Clastic-Dominated Castellanos Zinc-Lead Deposit (Northwest Cuba) Minerals, 11 (4) 414 doi:10.3390/min11040414 | Journal (article/letter/editorial) |
| minerals Article Gold in the Farallones Block of the Shale-Hosted, Clastic-Dominated Castellanos Zinc-Lead...Gervilla, F.; Piña, R.; Hernández-Díaz, R.; Azor, A. Gold in the Farallones Block of the Shale-Hosted, Clastic-Dominated...license (https:// creativecommons.org/licenses/by/ Department of Geology, Universidad de Pinar del Río Hermanos...davidgvivo@gmail.com (D.G.-V.); rebeca@upr.edu.cu (R.H.-D.) Department of Mineralogy and Petrology, Instituto Andaluz...Universidad de Granada, 18071 Granada, Spain Department of Mineralogy and Petrology, Faculty of Geological |
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| DEPARTMENT OP THE INTEKIOK BULLETIN OF THK UNITED STATES GEOLOGICAL SURVEY No. 193 SERIE§ F, GEOGRAPHY...10 12 12 14 14 16 16 LETTER OF TRANSM1TTAL. DEPARTMENT OF THE INTERIOR, UNITED STATES GEOLOGICAL SURVEY...island, known as the Organ Mountains (Sierra de los Organos). These rise in many places to altitudes exceeding...been utilized in making illuminating gas. A little gold and silver has been mined in past times, but for...under the direction of the United States War Department in 1899, was 1,572,797. Twelve years earlier |
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| on gypsum inclu sions. Dr. Allen M. Bassett, Department of Geology, San Diego State College, critically...world’s largest silver producer. It also produces gold, oil, copper, lead, zinc, antimony, mercury, bismuth...Government Tourism Department in many United States cities. Or you may write or visit the Department at Paseo de...208 Grand Ave.. Nogales, Arizona. Many Tourist Department and Pemex Auto Club maps, brochures, and folders...map of Mexico can be obtained from the Geology Department, University of Mexico, Mexico City. Though long |
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| a M.S. degree in geology from the Geosciences Department at the University of Arizona, and after graduation...worked for four years as an exploration geologist for Gold Fields Mining Corporation in Arizona, California...the position of exploration manager for ICA in Colombia during 1998 and 1999. Between 2002 and 2004, in...1986 to 1987, subdirector of the Geosciences Department from 1980 to 1983, academic coordinator for the...and chairman of laboratories in the Geosciences Department from 1973 to 1974. He has been the academic advisor |
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| among the carbonate rocks of Venezuela, Brazil, Colombia, Ecuador and Peru, but none compares with the...Venezuela @Trinidad Guyana urinam ages HS @ o Colombia French Brazil Galapagos Easter a ee Bolivia...—301m), are both single-streamway systems. In the Gold River area, a karst plateau rises 760m above the...hardly started in most of the Guangxi karst. COLOMBIA Only three regions of karst are currently known...(—160m, 850m long). Slightly further south still, in Huila, a small area of karst has yielded the 823m Cueva |
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| Americans to come to the Southwest were seeking gold. False True DW GRANTHAM, Editor M. BANDINI, Photo...D. W. Grantham Where in Arizona can one find a gold mine that provided its owners with profits of over...it was reported that a Pima Indian had made a big gold strike in the "Harquehila Mountains". Sometime later...a number of years. However, due to a nearby rich gold discovery and the establishment of Salome as a railroad...Harrisburg Mill. The Socorro is possibly the first gold mine extensively worked in the area. To answer our |
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| Rue's Spirit Springs colony and their great cave of gold bullion in the Organ mountains. Volume 7 COVER...to the brush. MARCH, 1944 . . . Go—Where the Gold Lies Buried A test of your desert knowledge . ...U uncertain by that date, notify circulation department to hold copies. SUBSCRIPTION RATES One year ...mountains glow. Their granite summits broken into gold, Each ridge and slope and crudely sculptured fold...years or more he searched For the bright elusive gold With his pick axe and his shovel Through the heat |
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| West 920 Riverside Ave. WASHINGTON, D.C.--U.S. Department of the Interior Bldg., Rm. 2650, 1849 C St.,... U.S. GEOLOGICAL SURVEY BULLETIN 1693 U.S. DEPARTMENT OF THE INTERIOR MANUEL LUJAN, JR., Secretary...success. An example might be the seeking of additional gold nuggets in a stream in which one nugget had already...USGS-INGEOMINAS Cooperative Mineral Resource Assessment of Colombia (Hodges and others, 1984). Effective cooperation...U-Au, by Dan L. Mosier 249 Descriptive model of gold on flat faults, by Bruce A. Bouley 251 248 Deposits |
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| International Cooperation Administration of the Department of State UNITED STATES GOVERNMENT PRINTING OFFICE...OFFICE, WASHINGTON : 1961 UNITED STATES DEPARTMENT OF THE INTERIOR STEW ART L. UDALL, Secretary GEOLOGICAL...deposits, chiefly lead, zinc, and antimony, but also gold and silver, are widely distributed between Bernal...International Cooperation Administration of the U.S. Department of State. The aid of A. J. Bodenlos, Carl Fries...brush thins to the west and is interspersed with organos at the longitude of Las Medias. The highland forest |
