 | | Journal (article/letter/editorial) | | ileLtda., AvenidaPedrode Valdivia295, Santiago,Chile AND RICHARD H. SILLITOE 27 WestHill Park,HighgateVillage...and 28 ø S in the Andean Cordillera of northern Chile. After 10 yearsof exploration,three preciousmetal...38-2353.00 1238 Au PORPHYRY,MARICUNGA BELT, CHILE 1239 and west of Marte which compriseadvancedargillic...central and northern Chile. The the Atacama desert. Maricungabelt in northern Chile is one of the most...explorationists in the areafor the last emplifiedby Marte, Lobo, and Aldebaran,is domi- fiveyearsor soto denotea |  | | Journal (article/letter/editorial) | | mineralization in the Atacama segment of the South American Andes, northern Chile (26°15'-27°25'S) Received:...magmatism and the rich ore deposits of northern Chile have been the focus of numerous studies. Significant...feature of the geology of this part of northern Chile is the existence of n o r t h - south to north-east-...alteration and cama segment - Andes - northern Chile mineralization (Baker and Guilbert, 1987; Colley...metallogenic belts Introduction (Fig. 1): (1) along the Atacama Fault System; (2) along the Inca de Oro Belt; (3) |  | | Journal (article/letter/editorial) | | Porphyry-Epithermal Transition: Maricunga Belt, Northern Chile JOHN L. MUNTEAN†,* AND MARCO T. EINAUDI Department...Pepa districts in the Maricunga belt of northern Chile contain advanced argillic alteration zones that...we investigated the Maricunga belt of northern Chile, where numerous districts have zones of advanced...in northern Chile about 700 km north of Santiago (Figs. 1, 2), is a metallogenic province of Miocene age...are overlain by Mesozoic to early Tertiary Marte Lobo Volcan Copiapo La Pepa PERU Volcan Laguna 0 |  | | Journal (article/letter/editorial) | | Porphyry Gold-Copper Deposit, Maricunga Belt, Northern Chile* RICHARD H. SILLITOE,1,† JUSTIN TOLMAN,2,** AND...the Maricunga gold-silver-copper belt of northern Chile, was discovered in 2007 beneath postmineral cover...28°S in the high volcanic Andes of the Atacama Region, northern Chile (Fig. 1). The belt, some 200 km long...-26°30’ ESPERANZA Argentina Chile Antofagasta LA COIPA Fig. 2 PUREN Copiapó Maricunga belt CASPICHE...-LAMA VELADERO EL INDIO -30° -30° El Indio belt LOBO LA PEPA VOLCAN PANTANILLOS Santiago -70° -27°30’ |  | | Journal (issue) | | January 1998 ISSN: 1355-4565 Turquoise from Hubei Province, China Qi Lijian, FGA, DGA, Yan Weixuan, FGA,...The turquoise deposit in Yunyang district, Hubei Province, China, is characterized by its large scale, complex...secondary leaching Introduction unyang in Hubei Province, located in the eastern section of the Qinling...Neolithic Age, located in Yongjing County, Gansu Province, China. This indicates a mining history of about...crossed polars, x60. x60. Turquoise from Hubei Province, China 3 3 Table I: Chemical compositions of |  | Sillitoe, Richard H., Devine, Fionnuala A.M., Sanguinetti, Martin I., Friedman, Richard M. (2019) Geology of the Josemaría Porphyry Copper-Gold Deposit, Argentina: Formation, Exhumation, and Burial in Two Million Years. Economic Geology, 114 (3) 407-426 doi:10.5382/econgeo.4645 | Journal (article/letter/editorial) | | located in the Frontal Cordillera of San Juan Province, Argentina, near the present-day northern limit...Cordillera of San Juan Province, Argentina, ~8 km east of the border with Chile (lat 28°26'S, long 69°32'W)...70° 68°W 69°40’ o PERU S BOLIVIA er u - Chile Tambo Alturas ch Los Azules El Altar - Piuquenes...d os M og ote sf au lt Refugio CHILE belt A R G E N T I N A Lobo-Marte La Pepa Taguas Pascua-Lama...late Oligocene-Miocene volcanic belt of northern Chile and contiguous Argentina, showing the age assignment |  | | Report (issue) | | Viteri, The porphyry gold deposit at Marte, northern Chile, Economic Geology Monograph 8, in press. D. P. Cox...geologists at La Pepa, Alderberan, Marte and Lobo Mines, Chile. REGIONAL GEOLOGIC ATTRIBUTES TECTONIC SETTING:...alteration at depth hosting gold and/or silver quartz-chalcedony veins may indicate presence of porphyry gold...mineralization. EXAMPLES Marte, Chile 46,000,000 mt; 1.43 gpt Au, 549 ppm Lobo, Chile 90,000,000 mt; 1.50 gpt...gpt Au, 0.1-0.2% Caseli, Chile Caravancha, Chile El Refugio, Chile 130,000,000 st; 1.03-1.51 gpt Au, Young-Davidson |  | | Report (volume) | | mine_________________________________________________ San Alfredo mine _______________ -_______________________________...principal mine workings at Canoas ___________ In pocket 10. Map showing the distribution of the mine openings...deposited abundant opal and some montmorillonite, chalcedony, and cinnabar. During the alkaline mineralization...and with a contour interval of 10 m; the principal mine workings were mapped at a scale o:f 1: 500. The...northeasterly direction towa1·d the village of El Lobo, near which there is a confluence with the Arroyo |  | Gurbanov, A. G., Bogatikov, O. A., Dokuchaev, A. Ya., Gazeev, V. M., Abramov, S. S., Groznova, E. O., Shevchenko, A. V. (2008) Ore-bearing hydrothermal metasomatic processes in the Elbrus volcanic center, the northern Caucasus, Russia. Geology of Ore Deposits, 50 (3) 199-217 doi:10.1134/s1075701508030033 | Journal (article/letter/editorial) | | time. By analogy with porphyry Cu–Mo deposits in Chile and the United States, the ore mineralization of...that are mined in the Maricunga Belt in northern Chile are localized in early and late Miocene volcanic...Valle, and other gold deposits); at some deposits (Lobo, Refugio), this cap has been eroded. The deposits...a large volume of ore are successfully mined in Chile at a rather great height (3000–4500 m). The Marte...t, 1.43 g/t Au, 500 ppm Cu, and 4.6 ppm Mo; the Lobo deposit, with Au reserves of 128 t, 1.6 g/t Au, |  | | Report (issue) | | ............................................ 11 Lobo(?) formation .....................................in Precambrian time. An arkose, possibly of the Lobo(?) formation of Cretaceous(?) age, is present locally...Generous financial aid was received from the American Province of the Society of the Most Precious Blood. To...Basin and Range province. West of the Rio Grande valley in New Mexico, this province is characterized...The southern boundary of the Colorado Plateau province lies about 70 miles to the north of the area. |  | | Journal (article/letter/editorial) | | also found in the group of G o y / u s s i f e Mine. 629 Downloaded by [University of Florida] at...implications. We also went to the Mine Museum and "Big Hole" (DeBeers Mine). We saw the processing Spot...squeezing of diamonds from the dirt brought up from the mine, to sorting, grading, and exhibiting of the many...mineral collections. We toured the Cullinan diamond mine where 40 more years of production is planned. In...before we left for Africa. It is a beautiful green chalcedony-like rock. Back to the great Zambesi River again |  | | Journal (article/letter/editorial) | | LOUIS, 14, MO. OPALS, BRILLIANT COLORS-Direct from mine, 15 for $5.00. 10 ringsize cabochons (opal, amethyst...16:12 24 August 2017 ARKANSAS QUARTZ CRYSTALS, FROM MINE TO YOU—4 for $1.00, suitable for cutting. Beautiful...50i each. 3", 1 lb. $1.00 each. Badland blue chalcedony (nice and blue), tumbles nice. Jasper agate from...Make nice cabs, very colorful nodules. Above chalcedony, jasper-agate, rough mixed 5 lbs. $3.00, 10 lbs...yellows in intricate patterned jasper 750 lb. Chalcedony nodules 750 lb. Flawless ¡et black obsidian—some |  | | Journal (article/letter/editorial) | | Deposit at Marte, Northern Chile TOMkS VILA, Minera Anglo American Chile Ltda., Avenida Pedro de Valdivia...Valdivia 295, Santiago,Chile RICHARD H. SILLITOE, 27 West Hill Park, Highgate Village, London N6 6ND, England...CopiapS,Chile AND ENRIQUEVITERI** Minera AngloAmericanChile Ltda., ChaKarcillo840, CopiapC,Chile Abstract...andesiticvolcanicroof to the stockis largelyreplacedby a chalcedony-and alunite-richadvancedargillicassemblage, whichis...Santiago,Chile. ** Presentaddress:Avenida11 de Septiembre2250, Oficina1304, Santiago,Chile. 0361-01 |  | | Journal (article/letter/editorial) | | quartz–pyrite, quartz–polymetallic, and carbonate–chalcedony Pyrite and chalcopyrite are prevailing sulfide...concentration of 1.3 g/t, Philippines; Lobo (150 t, 1/4 g/t, Chile); Grasberg (1952 t, 1.02 g/t, Indonesia); |  | | Journal (issue) | | Peak1.139 70 2.2 Ytterbium Yb Yb2O3 Chico Hills, Lobo Hill, and Monte Largo (Sandia Mountains). Disseminated...operations, and to prorequire special handling of the mine waste. Future development vide for a sustainable...na—not available. deposits that are economical to mine and only a few deposits in the world account for...Mountain Tecolote Monte Largo Tijeras Canyon Lobo Hill Pedernal Hills Gallinas Mountains Lemitar...surface in these areas. Episyenites also are found at Lobo Hill where episyenites, carbonatites, and lamprophyres |  | | Journal (article/letter/editorial) | | limits O the South Portuguese Zone with the Pulo do Lobo Unit. The mineralization is related to a specific...suture with the adjacent terrane of the Pulo de Lobo Zone there is a significant group of deposits that...Donaire et al., 2002; Conde et al., 2003) Las Cruces Mine (Bobrowicz, 1995; Knight, 2000; Conde F et al...arguably the largest volcanogenic massive sulfide province in the E- world. It contains more than 2,500...the Pulo do Lobo Terrane that in this area consists of an antiform hosting the Pulo do Lobo Fm and the |  | | Report (issue) | | ..........................................8 Abo-Lobo "red beds" ................................................................ White Eagle fluorspar mine ........................................................ 44 9. Assays of ore from the White Eagle mine ........................................ 69 10............... 68 Diagrammatic sketch (White Eagle mine) showing the relation of gash veins to the main...uplifted areas. The White Eagle fluorite mine is the only mine now being worked in the quadrangle. Mineralization |  | | Book | | Elementary 39 Elect. Colliery Practice . Mine-Surveying . . Mine Air, Investigation of. Mining Law . . Blasting...LARSEN J. RIEMER . . J. G. LAWN, A. R.S. M. - Mine Accounts º7 PROF. JAMES PARK, F. G.S. - - $3...de la Sociedad Nacional de Minería,” Santiago de Chile (monthly). “ Boletín del Cuerpo de Ingenieros de...corresponding substantive.) alluvial mining. Andalusia (Province), Spain. Antioquia (Department), Republic of Colombia... Bol. de la S. N. de M. . - - - - Aragón (Province), Spain. Argentine Republic. assaying. building |  | | Journal (article/letter/editorial) | | crystalline dolospar in association with length-slow chalcedony and 3) discrete laminae of ferroan or non-ferroan...These frequently contain cores of length-slow chalcedony (quartzine} fibres and sometimes quartz megacrysts...silica is of authigenic origin and the dolomite/chalcedony micronodules are interpreted as diagenetic replacements...intimate association with dolospar, length-slow chalcedony and authigenic quartz rnegacrysts. This indicates...composed of radiating bundles of length-slow chalcedony (quartzine fibres (Fig. 4). Two or more clusters |  | | Journal (article/letter/editorial) | | -h 12oo " " ileo ~ ileso 114o 112o 11oo lOBO 1o6o 1o4{) WA~lSlUM~I~I~ CM"1 Fro. 2. First...(1978) Study of the disorder in the structure of chalcedony by infrared spectroscopy. Doklady Akad. Nauk |  | | Report (volume) | | Triassic (?) system___ __________..__________ 39 Lobo formation_ _________'_____________ 39 Relations...Section at Capitol Dome, showing relations of pre-Lobo fault...... 77 7. Sections across the Little Florida...generally low country, by which the Colorado Plateau province is bordered on its southwest side, not only contains...Gray limestones, mostly slabby, and sandy shale. Lobo formation. 95-500 Reddish shale, impure limestone...at the foot of Fluorite Ridge, southwest of Fluor mine, has a marked green color and is notably porphyritic |  | | Report (issue) | | ............................................ 24 Lobo formation .................................................................................... 77 Mine workings .................................................. 63 9. Reconnaissance map of a typical mine in the Jose mining district ......................was inactive, but preparations were being made to mine and concentrate manganese ores in the Lake Valley...faulting and folding of the Southern Rocky Mountain province to the northeast, but since it has only one gentle |  | | Journal (article/letter/editorial) | | LOUIS, 14, MO. OPALS, BRILLIANT COLORS—Direct From mine, 15 for $5.00. 10 ringsize cabochons (opal, amethyst...franklinite from the famous Franklin, N.J., zinc mine. Pieces 2 " to 3'/2", total w t . approx. 5 lbs...Badland above, rough blue colorful materials chalcedony ¡asper, nodules mixed, 5 lbs. $3.00, Downloaded...inches prepaid with piece of back guarantee. Lobo, Box 144-R, Carlsbad, N e w Mexico. bone free...Kyte, Ken Lamb, Maurice Ledbetter, Clay Lee, Clyde Lobo Lor-Lew Design Co. Lost Cave Mineral Shop Mansfield's |  | | Journal (issue) | | (2017) - Near infrared signature of opal and chalcedony as a proxy for their structure and formation...backscatter diffraction investigation of length-fast chalcedony in agate: implications for agate genesis and...E MIEHE G. , (1985) - The nature of water in chalcedony and opal-C from brazilian agate geodes - Physics...(1993) - A proposed mechanism for the growth of chalcedony - Contributions to Mineralogy and Petrology,...Crystal structure and growth fabric of length-fast chalcedony - Physics and Chemistry of Minerals, vol. 10 |  | | Journal (article/letter/editorial) | | BALAS RUBIES Va in., perfect crystals. Your list for mine. H. Rzemieniewski, 440 E. 145th St., New York 54...D MINERALS OPALS, BRILLIANT COLORS-Direct from mine, 15 for $5.00. 10 ringsize cabochons (opal, amethyst...beryl gems. H o w a r d J. Hewitt, Sulphur Hill Mine, Andover, N.J. Tel. LA 5-1540. IN $7.50. & ARKANSAS...x 1 x 1 " $5.00. Dioptase xled with garnets, CHALCEDONY, pseudomorphs (Scotland) $3.50, $6.00. Chalcocite...Field Trip, Rockhater, Crystals, Rockhound's Wife, Mine Fever, Rocks In The Head, Favorite Gemstones, Diamond |
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