 | | Journal (article/letter/editorial) | | geochemical study of element mobility in sulfide mine tailings of Fe oxide Cu–Au deposits from the Punta...minerals are pyrite, magnetite and/or hematite and chalcopyrite. Gangue is dominantly calcite with minor quartz...potential (about 3 wt.% calcite and 4 wt.% pyrite). Acid mine drainage (AMD) with the precipitation of schwertmannite...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) | | (Nordenskjold, 1926, p. 1148-1150). In the Remolinos mine and at Ladrillos de Plata (Fig. 2), where gold and...were found in the underlying zone of primary chalcopyrite and pyrite. In the region as a whole, however...Dulcinea mine, for example, chalcocite, as a product of supergene sulfideenrichment of chalcopyrite, is found...the surface (Brown, 1928, p. 186). The Dulcinea mine is near the top of a mountain of resistant metavolcanic...enrichment are much less; for example, in the Remolinos mine enriched ores are not found below 295 feet (Segerstrom |  | | 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 Unpublished reports of many mine examinations made by Hector Flores W. and Ruiz during...thickness of the Punta del Cobre Formation exposed in mine workings and at the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) | | plutonic samples collected near the La Candelaria mine. Interestingly, these samples have low Re/Os (19–43)...deposits; the oölitic nature of the chalcopyrite in the Providencia-Teresita Cu-Au deposits 14 km to the north...deposit shows two different kinds of magnetite and chalcopyrite with very different Re contents and Re/Os values...and 335 ppt Re and 6 ppt Os, respectively). Chalcopyrite samples also show a large difference in Re and...magnetite and chalcopyrite generation. Contamination of the magnetite samples with chalcopyrite, or the chalcopyrite |  | MATHUR, R., Marschik, R., Ruiz, J., Munizaga, F., Leveille, R. A., Martin, W. (2003) AGE OF MINERALIZATION OF THE CANDELARIA Fe OXIDE Cu-Au DEPOSIT ANDTHE ORIGIN OF THE CHILEAN IRON BELT, BASED ON Re-Os ISOTOPES--A REPLY. Economic Geology, 98 (5) 1050-1052 doi:10.2113/gsecongeo.98.5.1050 | Journal (article/letter/editorial) | | 1985, p. 913) occur not far from the El Romeral mine (29Âş42.8' S, 71Âş14.9' W). In regard to the Re-Os...the molybdenite is found in association with chalcopyrite of the main coppermineralizing event. Certainly...et al. (2003) point to oolitic chalcopyrite in the Providencia-Teresita Cu-Au deposits 14 km to the north...north of La Candelaria. However, this oolitic chalcopyrite most likely formed by replacement. The presence...underground exposures. However, at the Carola mine, chalcopyrite veins and veinlets are observed cutting into |  | | Journal (article/letter/editorial) | | Aclinolite t,Magnelile Garnet _ mm_ _ _ Ăź 6 Chalcopyrite Ăź 5 Scheelite Tourmaline 60 GoIcl Tourmaline...metallichypogenemineralsfoundin Chileanore depositsare pyrite, chalcopyrite, magnetite,and hematite(includingspecularite)...crystalline magnetite andlesseramounts of hematite. Chalcopyrite is themost abundant coppermineralof copperdeposits...copperdeposits arerecognized: chalcopyrite-actinolite-magnetite, chalcopyrite-garnet, chalcopyrite-tourmaline, porphyry-copper...porphyry-copper, chalcopyrite-specularite, chalcopyrite-pyrite, chalcopyrite-pyrrhotite,and bornite-chalcopyrite |  | | 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) | | 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...sphalerite,argentiantetrahedrite(freibergite), chalcopyrite,and galenaare the mostabundantore minerals,but...splits alongA-A' in Figure 4. Numbersindicatemain mine levelsand horizontally ruledareasarestopes minedasofJuly |  | | Journal (article/letter/editorial) | | Cordillera of North America, P r o terozoic pyrite-chalcopyrite-sphalerite deposits, syngenetic with the quartz...composition (pyrite, siderite, galena, sphalerite, chalcopyrite, and sometimes cinnabar) have been developed...Cape Rozier). There are conformable veins of chalcopyrite ores in the Ordovician greenstone sequences...Paleozoic Sambagawa schists; and the Huelva province in Spain ( Rio Tinto). Cimmerian pyritic deposits are known...steep syncline, are associated with the Bor chalcopyrite deposit, which consists of large stocks of massive |  | | Report (issue) | | depths over 150 meters. Galena, sphalerite, chalcopyrite, and tetrahedrite are eooaon to all veins, but...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 |  | | Journal (article/letter/editorial) | | sediment contamination; redox transitional zone; metal mine; oxic-anoxic interface; ferrihydrite; sulphide;...traditional approaches to management and remediation of mine water pollution tended to focus on point sources...226 water bodies known to be impacted by non-coal mine water pollution in England and Wales show evidence...alkalinity [85]. The processes may be net-neutralizing in mine water with high sulphate to iron ratios because... Minerals 2014, 4 60 and galena (PbS) and chalcopyrite (CuFeS2) had similar oxidation rates to pyrite |  | | Journal (article/letter/editorial) | | the Banana Creek and Tuvatu North prospects. Chalcopyrite, and minor bornite, occurs in quartz–calcite–(adularia)...and phyllic alteration. Gold is accompanied by chalcopyrite, galena, and sphalerite in quartz–pyrite veins...Reflected light (plane polarized)light image of chalcopyrite and pyrite (Py) in the Banana Creek prospect...stage consist of disseminated magnetite and chalcopyrite and trace amounts of pyrite, bornite, chalcocite...chalcocite (Figure 3d) and covellite replacement of chalcopyrite and bornite along grain boundaries or in fractures |  | Gibson, Peter Craig, Noble, Donald C., Benavides, RaĂşl 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...sulfosalts—largely tetrahedrite, sphalerite, galena, chalcopyrite, and pyrite—occur as bands and pods within banded...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 |  | | Journal (article/letter/editorial) | | Chile. This belt includes the large Candelaria mine and a group of middle- and small-sized mines in...portions of the ore of the Candelaria deposit. Chalcopyrite is the only hypogene Cu mineral. The Cu-Au ore...stage followed with formation of pyrite and chalcopyrite at temperatures of >470° to 328°C. Subsequent...hydrothermal activity. Sulfur isotope ratios of chalcopyrite, pyrite, pyrrhotite, and sphalerite from the...Anhydrite from the Candelaria mine paragenetically overlaps with chalcopyrite. Fluid inclusions in this anhydrite |  | | Journal (issue) | | Miguel Calvo (who covers the two major shows in Spain), under Letter from Europe. George Robinson and... C/Arc de Sant Marti 79 Local 08032-BARCELONA (SPAIN) S (3) 4504478 • Fax (3) 4504745 By Appt. only ...E - M - S - T - O - N - E Wulfenite, Red Cloud Mine, La Paz Co., Arizona Send $7.50 for our Mineral...Museum of Barcelona, Spain; the Spanish Institute of Geology and Mining, Madrid, Spain; the Vernadsky State...sitting up on a 10 x 10-cm matrix, from the Akchatau mine, Kazakhstan; not even a large bash in the center |  | | Journal (issue) | | except the Dale Beck Valley, Dry Gill and Carrock End Mine. Grahamis hoping to get the permit system properly...still very much a 'frontier place'. One supposed mine was started by a character called Otto van Stryk...Stryk who thought he had found a huge iron mine. Alas, he never got any useable ore out of it. Rick went... So now it is recognised as a potential uranium mine! Another anecdote involved a light plane brought...amethyst, fluorapatite and tourmalines. Rossinguranium mine, a uraniferous granite, was also mentioned. Rick |  | | Journal (article/letter/editorial) | | University, Pullman, Washington 99164-2812 AND TERESITA F. MONTENEGRO CONICET, Universidad Nacional de...to 15 percent sulfides (pyrite >> pyrrhotite-chalcopyrite) and locally are associated with distal massive...potassic core (Fig. 2). Concentrations of pyrite, chalcopyrite, pyrrhotite, magnetite, sphalerite, enargite...pyrite and pyrrhotite with minor marcasite and chalcopyrite). Endoskarn located in Los Bronces Creek also...crosscutting pyrite, chalcopyrite, and marcasite veinlets occur in the exoskarn. Pyrite-chalcopyrite veinlets also |  | | 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 (issue) | | Miguel Calvo (who covers the two major shows in Spain). under Leller from Europe. George Robinson and...· E · M · S · T· 0 · N · E Wulfenite, Red Cloud Mine, La Paz Co., Arizona Send $7.50 for our Mineral...Museum of Barcelona. Spain: the Spanish Institute of Geology and Mining. Madrid. Spain; the Vcmadsky State...sitting up on a I O x I 0-cm matrix, from the Akchatau mine, Kazakhstan; not even a large bash in the center...these two cases breathlessly end ). from the l'ouyva mine near Saranpaul in the Polar Urals. Russia. there |  | | 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 |  | | Journal (article/letter/editorial) | | displacement of 1200 m near Las Torres mine and of 1700 m at the Valenciana Mine. The Veta Madre vein was discovered...diagenesis (e.g. Gifkins et al., 2005). Near El Cubo mine the Calderones formation includes thin (3–5 m thick)...55 ± 0.2 Ma, respectively. Close to the Peregrina mine (Fig. 3) a dacitic lava dome is exposed. This structure...area located south of the tail ponds of El Cubo mine by Báez-LĂłpez (2014) are 33.0 ± 0.25 and 33.2 ±...1975). Paragenesis in the deep ore bodies is chalcopyrite + galena + sphalerite + adularia + quartz + |  | | Journal (issue) | | Tampa, FL Correspondents Miguel Calvo Zaragoza, Spain Michael P. Cooper Nottingham, England Thomas P....ecord Articles Rare sulfosalts from the Van Silver mine, British C olum bia...............................Balacko Famous mineral localities: The Brownley Hill mine, Alston Moor, Cumbria, England....................COVER: ATACAMITE in GYPSUM, 6.8 cm, from the Lily mine, lea, Peru. Irv Brown collection; Jeff Scovil photo...British Columbia the Silver Tunnel o f the Van Silver mine has produced hundreds o f rare and beautiful crystal |  | | Report (issue) | | CU AG C U Minor A G ATACAMITE. CHRYSOCOLLA. CHALCOPYRITE. BORNITE. CHALCOCITE. COVELLITE: EAST OF ANTOFAGASTA...CONCENTRATIONS: PARAGENETIC SEQUENCE OF PYRITE. CHALCOPYRITE. BORNITE. CHALCOCITE. DIGENITE. COVELLITE....HEMATITE - PYRITE/CHALCOPYRITE - CHALCOCITE/BORNITE - BORNITE/CHALCOCITE - PYRITE/CHALCOPYRITE/GALENA OR...OR BORNITE/CHALCOPYRITE IN SULFIDE ZONE: SILVER CONCENTRATED WHERE BORNITE/CHALCOPYRITE REPLACED BY DIGENITE/COVELLITE...CORRELATE DUE TO LENS-LIKE MORPHOLOGY. SOUTHWEST OF MINE. A GRANODIORITE WITH INCIPIENT TO COMPLETE CHLORITIZATION |  | | Journal (article/letter/editorial) | | al., 1998; DĂaz and Vivallo, 2001). 2.3.1. Carmen Mine Carmen is an irregular magnetite body elongated...Negra Formation (Fig. 2). The Fe deposits (e.g., Teresita) are Kiruna-type, similar to Carmen but considerably...primary mineralization includes magnetite, pyrite, chalcopyrite (partially oxidized to malachite, chrysocolla...2) outcrops in the north open pit of the Carmen mine and is accessible on the lower benches. The stock...Santos) located in the vicinity (3 to 10 km) of Carmen Mine. Actinolite in the district crystallized in different |  | | Report (issue) | | Willden __________ _ 193. Geology of the ~ount Wheeler mine area, White Pine County, Nevada, by Donald H. Whitebread..._ 229. Facies change in Neocomian rocks of the Teresita-Chula area, Atacama Province, Chile, by Kenneth...stress distribution around coal mine workings in Sunnyside No. 1 mine, Utah, by Frank W. Osterwald---...Accident mine American mine Bright Star mine Brown Bear mine Brunswick mine Calmich mine Centenial mine Eldorado...Eldorado mine Franklin mine Gladstone mine Greenhorn mine (sulfide) Honeycomb mine JIC mine Larry mine Mad |
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