 | | Journal (article/letter/editorial) | | geochemical study of element mobility in sulfide mine tailings of Fe oxide Cu–Au deposits from the Punta...potential (about 3 wt.% calcite and 4 wt.% pyrite). Acid mine drainage (AMD) with the precipitation of schwertmannite...mainly adsorbed and as secondary sulfides (e.g., covellite). In contrast, at the P. Cerda, tailings impoundment...ferric polymers or colloids in the form of neutral mine drainage (NMD). This would explain the metal enrichments...oxide Cu – Au deposits; Tailings; Carbonates; Acid mine drainage (AMD); Enrichment; Cementation zone; Schwertmannite; |  | | Journal (article/letter/editorial) | | guide to later workers. Unpublished reports of many mine examinations made by Hector Flores W. and Ruiz during...thickness of the Punta del Cobre Formation exposed in mine workings and at the surface is 680 m (Segerstrom...part of the formation, 1.5 km northwest of Teresita mine, contains Crioceras andinum Gerth and other...of a small syncline (PL 3, fig. 2). At the Teresita mine, relatively thick-bedded Abundancia limestone...the Esperanza mine, the fault strikes N. 10° W. and dips 70° E. North of the Esperanza mine, the fault seems |  | | Journal (article/letter/editorial) | | sediment particles enter river systems by discharge of mine or processing waste, tailings dam failures, remobilization...remobilization of mining-contaminated alluvium and mine drainage. The mineralogy and geochemistry of these...metal-bearing particles to rivers include discharge of mine or processing waste, tailings dam failures, remobilization...mining-contaminated alluvium, and mine drainage. Direct discharge of mine tailings, effluent and waste rock...HUDSON-EDWARDS the tailings dam breach at the Bolivian Porco mine in 1996, which released an estimated 235,000 m3 |  | | Journal (article/letter/editorial) | | consistmainly of chalcociteand to a lesserextent of covellite. 98 CARLOS RUIZ F. AND GEORGE E. ERICKSEN ...Cabezade Vaca, E10rito, and Llamuco (Atacama); the mine E1 Chivato (Talca) is the typicalgold-tourmaline...somedeposits. A typical depositis the Las Chivas mine at Lago General Carrera in Aysen. Bornite-chalcopyrite...Typicaldeposits are E1 SoldadoandLa Pataguain Aconcagua, Teresita and Frankensteinin Atacama,and Portezueloand Santo...a maximum dimension of 20 to 30 m. The Llamuco mine near Salamanca is a typical scheelitedeposit. |  | | Catalog/List | | Ward Minera! on QUARTZ RHODOCHROSITE District Mine. Climax Climax olTolg-Yole Lake. County. ncredibly...years to find a specimen rhombs rhombs Climax Mine, ot rhodochrosite $50 OOU 60.000 Ex The ... 8 nn ae from the \ slight ¢ « nax 1g Mine : The Kevin Ward Mineral Exceptional German...silver was found in the late 1970s at the Dukat Mine measures which is mainly known by 6 cm Ex: Helmut... initely a unique opportunity. From the Dukat Mine, Dukat Gold-Silver Ore Field, Magadan Oblast’, East |  | | Journal (article/letter/editorial) | | trace amounts of pyrite, bornite, chalcocite, and covellite. Secondary malachite and chrysocolla are also...presence of minor chalcocite (Figure 3d) and covellite replacement of chalcopyrite and bornite along...sphalerite, galena, bornite, chalcocite, and covellite, which do not appear at Banana Creek in the drill...disseminations (0.1–0.9 mm in size). Chalcocite and covellite are present along grain boundaries and fractures...[59], Tonga Trench, Tonga [60], Betic Cordilleras, Spain [61,62], and Mururora Atoll, French Polynesia [63] |  | | Journal (article/letter/editorial) | | AndahuaValley, a largeasymmetric Formation.Within the Calera mine, a thick sequence grabenthat boundsthe districton...vein showingprincipal mine workings.3800, 3880, 3950, 4015, and 4055 indicatemain mine levels,which repr...andsplitRamal1, respectively. ModifiedafterOrcopampa mine staff. Rocksrich in sericiteand The locationsof...splits alongA-A' in Figure 4. Numbersindicatemain mine levelsand horizontally ruledareasarestopes minedasofJuly...Stephanite - Coloradoite Calaverite Hessite Stibnite Covellite Hematite Marcasite - --- Colloform Pyrite |  | Gibson, Peter Craig, Noble, Donald C., Benavides, Raúl G., Mayta, Oscar T. (1993) Discovery, Development, and Production of a Blind Ag-Au Bonanza in the Calera Vein, Orcopampa District, Peru. International Geology Review, 35 (9) 780-796 doi:10.1080/00206819309465557 | Journal (article/letter/editorial) | | (1975), and unpublished mapping by the Orcopampa mine staff and K. E. Swanson. Manto Tuff is locally...vein showing development of the main ore shoot. The mine workings are projected to a vertical plane with...1988; D=January, 1992. E=June, 1993. Numbers are mine levels that represent approximate elevations. Qal...Tuff, Tsr = Santa Rosa volcanics. After Orcopampa mine staff. FIG. 6. Cross section along A-A' in Figure...pattern represents stoped vein. After Orcopampa mine staff. Downloaded by [University of Montana] at |  | | Report (issue) | | Castrovirreyna district 186 Table IV Mine production and grade of ore, Carmen mine, 1941-1958 . 188 Table V...production, Caudalosa mine, 1927-1957 189 Table VI Mine production and grade of ore, Lira mine, 1941-1958 190...190 Table VII Metal production, San Genaro mine, 1928-1955 191 Table VIII X-ray powder diffraction...Spcctrographic analyses of pyrargyrite froa the San Genaro mine --«* -. - < 252 Table XXXIII Spectrographic analysis...San Genaro mine Plate 6. Composite vein map of the San Julifin section* San Genaro mine Plata 7. |  | | Journal (issue) | | fluorite crystal group, 7 cm, from the Huanzala mine, Dos de Mayo Province, Peru. Marty Zinn collection;...province, department of Huanuco Huanzala mine Mercedes mine Chiurucu mine Uchucchacua district, Dos de mayo...mayo province, department of Huanuco Hercules mine, Ticapampa district, Recuay and Aija provinces, department...Carrion province, department of Pasco Colquijirca mine, Cerro de Pasco province, department of Pasco Atacocha...Huarochiri province, department of Lima Santa Rita mine, Morochocha district, Yauli province, department |  | | Report (issue) | | CHRYSOCOLLA. CHALCOPYRITE. BORNITE. CHALCOCITE. COVELLITE: EAST OF ANTOFAGASTA DIGENITE. NATIVE SILVER...CHALCOPYRITE. BORNITE. CHALCOCITE. DIGENITE. COVELLITE. HEMATITE WITH DISCRETE ZONING SYMPATHETIC TO...WHERE BORNITE/CHALCOPYRITE REPLACED BY DIGENITE/COVELLITE. GALENA IN VEINLETS ASSOCIATED WITH QUARTZ IN...CORRELATE DUE TO LENS-LIKE MORPHOLOGY. SOUTHWEST OF MINE. A GRANODIORITE WITH INCIPIENT TO COMPLETE CHLORITIZATION...TOCOPILLA ESPERANZA CHAJAHUA TOVAKU UNIDENTIFIED MINE TOVAKU EXOT1CO GENERAL SULFITO CHESTERFIELD |  | | Journal (article/letter/editorial) | | Chile. This belt includes the large Candelaria mine and a group of middle- and small-sized mines in...of magmatic origin. Anhydrite from the Candelaria mine paragenetically overlaps with chalcopyrite. Fluid...25° 70° 69° 70˚15' W b) Atacama Fault Zone Teresita Copiapó N Taltal Providencia Prospect Manto...Q. Paipote Ru ta Closed mine Carmen Chañeral 5-P an am eri ca na Mine in operation 26° Mantos...Selected Mineral Deposits of the Punta del Cobre Belt Mine Alcaparrosa Bronce Candelaria Carola Lar Las Pintadas |  | | Journal (issue) | | Tampa, FL Correspondents Miguel Calvo Zaragoza. Spain Michael P. Cooper Nottingham, England Thomas P....BOURNON1TE crystals on quartz, 8 cm, from the Herodsfoot mine, Liskeard, Cornwall. Stephen Smale collection and...r specimens in the future. INTRODUCTION Boulby mine is situated in the county o f Cleveland on the northeast...is sold for agricultural use, in fertilizers. The mine has recently been reported in mineralogical journals...and hilgardite in the sylvinite ore at the Boulby mine has been recognized since mining began in the early |  | | 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... . . . . . . . . . . . . . . 413 The Agustina Mine, a Volcanic-Hosted Copper Deposit in Northern Chile.... . . . . . . . . . . . . 449 The Cerro Negro Mine, Chile: Manto-Type Copper Mineralization in a Volcaniclastic |  | | Journal (article/letter/editorial) | | oxidation and release of Cu from chalcocite (Cu2S), covellite (CuS) will form after proceeding through a complex...14‰. At the endpoint of the reaction where only covellite appeared the ∆(aq-min) value averaged -1.15±0...twenty of the known carbonatite complexes has a mine. The high probability that any particular carbonatite...of mineral surfaces. A1403 BILL WALLIN1 AND TERESITA A. MORALES2 1 Geokema AB, Rönnvägen 9, 181 46...Biologia, Universitat de Valencia, 46100. Burjassot, Spain 3 Biogeosciences Laboratory, Institute of Geology |  | | Report (issue) | | their importance in very acid waters such as some mine waters issuing from oxidizing ore deposits. Data...waters, including many types of ground waters, acid mine waters, riVer waters and lake waters that occur... 1989, Solubility product of jarosite from acid mine water at Iron Mountain, California, U.S.A.: Sciences...polysulfides - Part II. The solubility of acanthite and covellite in sodium polysulfide solutions: Geochimica et...factors affecting the heavy metal chemistry of an acid mine system: Stanford University, Ph.D. Dissertation |  | | Report (issue) | | reported to have been collected from Guaysimi Alto mine, south of Nambija in the main skarn bell. This bi...0 km v.ri.de. Accessible outcrops occur ac Peggy Mine, near Sigsig; below the Agoyan dam near Barios;...within the bedded Piuntza sequence of Ca1npan l � Mine. The petrography of the skarns ( Beddoe-Stephens...Turner of Zamora, reportedly from Guaysimi Alto mine, near Nambija (photo: RAJ). (c) Discovery of Urcucocha...(green) and adularia (pink) skaro from Campanilla mine near Nambija. Pyrite and chalcopyrite are also present |
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