| Chiaradia, M., Tripodi, D., Fontbote, L., Reza, B. (2008) Geologic Setting, Mineralogy, and Geochemistry of the Early Tertiary Au-Rich Volcanic-Hosted Massive Sulfide Deposit of La Plata, Western Cordillera, Ecuador. Economic Geology, 103 (1) 161-183 doi:10.2113/gsecongeo.103.1.161 | Journal (article/letter/editorial) | Sulfide Deposit of La Plata, Western Cordillera, Ecuador M. CHIARADIA,† D. TRIPODI, L. FONTBOTÉ, Department... Isabel La Católica No. 882 y Cordero, Quito, Ecuador Abstract La Plata is, economically, the most important...sulfide (VHMS) deposits of the Western Cordillera of Ecuador, with preliminary estimated reserves of 840,000...Cordillera, it is hosted by the Early Tertiary Macuchi unit, which represents an oceanic island-arc sequence...bornite, and galena, with minor tennantite and digenite. The gangue minerals are barite, quartz, and sericite | | | Journal (article/letter/editorial) | tonnages, as an open pit operation will typically mine large tonnages at lower grades, illustrating the...belt. Similarly, the VMS deposits of the Macuchi Belt in Ecuador are particularly rich in gold (Chiaradia...Quebec; Guha 1984; Guha et al. 1988; La Plata, Ecuador; Chiaradia et al. 2008; Iron King, Arizona; Creasey...(e.g., Skellefte District in Sweden and Macuchi Camp in Ecuador), with some deposits having an elevated...metals ratio (Boliden in Skellefte and Mercedes in Macuchi) located close to deposits with relatively low | | | Book | . . . . . . . . 147 X Contents El Aguilar Mine: An Ordovician Sediment-Hosted Stratiform Lead-Zinc.... . . . . . . . . . . . . . . . . 279 Machcan Mine: A Pb-Zn Ore Deposit in Pucara Sediments of the... Contents Sulfur Isotope Studies in the Zinc-Lead Mine San Vicente, Central Peru H. Gorzawski, L. Fontbote...The Cu-Zn-Au-Ag Deposit of La Plata (Toachi), Ecuador R. W. Lehne . . . . . . . . . . . . . . . . . ... . . . . . . . . . . . . . . 413 The Agustina Mine, a Volcanic-Hosted Copper Deposit in Northern Chile | | | Report (issue) | Norte Cty, CA Santa Helena, Antioquia, Colombia Goto Mine, Luzan, P.I. References Wells, F. G. et al 1946...(Venezuela) Kidd Creek (Canada) Hanaoka (Japan) Macuchi, Equador References 3.2 (continued) Carlson,...Regional Mn halos Examples References Sullivan mine, Canada Hamilton and others (1981) Sediment hosted...siegenite, bornite, tennantite, barite, bravoite, digenite, covellite, arsenopyrite, fletcherite, adularia...zinc 4.7 Plan map of part of the Jefferson City mine, Jefferson City, Tennessee. After Fulweiler and | | 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) | locally felsic composition are present. The Macuchi deposit in Ecuador (Stoll, 1962) is a well-explored example...prospecting for chromite deposits in CamagUey Province, Cuba: Geophysics, v. 22, no. 4, p. 848-869. ____...gravity surveys to chromite exploration in Camaguey Province, Cuba, in Geological Survey Research in 1960:...chromite deposits in the Camaguey district, Camaguey Province, Cuba, 1954-1956: U.S. Geological Survey Open-File...W. C., 1962, Notes on the mineral resources of Ecuador: Ecomonic Geology, v. 57, p. 799-808. Tschanz, | | | Book | Continental Sub-Plate Chocó Arc Caribbean Large Igneous Province Central Tectonic Realm circa, approximately centimeter...Garzón Massif, and under the Putumayo basin. In Ecuador, the GSR underlies the Putumayo-Napo basin, the...eastwards into the Amazon basin of both Colombia and Ecuador. The Guiana Shield formed the backstop for the...paleontological dates for this unit from both Colombia and Ecuador. Farther west, the Gorgona terrane is located on...Cretaceous Pacific Realm belong to a similar volcanic province. The Sinú terrane is located outboard of San Jacinto | | | Book | the claims already staked by mining engineering, mine valuation, geophysics, and engineering geology,...Tyler (Exploration for Iron Ores), Robert K. Warner (Mine Valuation), and Kenneth K. Welker (Rock Bursts)...in valuation. 19. GEOLOGICAL WORK AT AN OPERATING MINE 503 "Theoretical" or "Practical"? Place of Geologists...properly be devoted to the detailed study of a single mine is necessarily li1nited, and partly because of the...sizing up the future possibilitieswhether or not the mine or prospect is likely to grow up to be a larger | | | Report (volume) | studies TEXTURES IN SERPENTINITES CASSIAR ASBESTOS MINE Serpentine textures and their distribution TRANSITIONS...major source of that material was a mine at Kauling, Kiangsi Province (Grim, 1968), which was in operation...from the original Kauling (Gaoling) mine locality, Kiangsi Province, China: Clays & Clay Minerals 28, 97-104...deposits in China is located near Suzhou in Jingsu province (Zheng et al., 1982). The geology of the Suzhou...over 20 million tons. Italy The largest kaolin mine in Italy is at Locchera on the island of Sardinia |
|