 | Arancibia, Gloria, Matthews, Stephen J., Cornejo, Paula, de Arce, Carlos Pérez, Zuluaga, José I., Kasaneva, Stabro (2006) 40Ar/39Ar and K–Ar geochronology of magmatic and hydrothermal events in a classic low-suphidation epithermal bonanza deposit: El Peñon, northern Chile. Mineralium Deposita, 41 (5) 505-516 doi:10.1007/s00126-006-0078-2 | Journal (article/letter/editorial) | | epithermal bonanza deposit: El Peñon, northern Chile Received: 20 December 2005 / Accepted: 12 June...epithermal El Peñon gold–silver deposit consists of quartz–adularia veins emplaced within a late Upper Paleocene...the Paleocene–Lower Eocene Au–Ag belt of northern Chile. Detailed K–Ar and 40Ar/39Ar geochronology on volcano–...Geología y Minería, Avda. Santa María 104, Santiago, Chile e-mail: gloarancibia@123.cl Tel.: +56-2-2385276...Antofagasta, Chile Keywords K–Ar and 40Ar/39Ar geochronology . Epithermal gold . Low-sulphidation . Chile Introduction |  | | Journal (article/letter/editorial) | | Candelaria-Punta del Cobre Iron Oxide Cu-Au(-Zn-Ag) Deposits, Chile ROBERT MARSCHIK†,* Lehrstuhl für Lagerstättenlehre...batholith near Copiapó, Chile. This belt includes the large Candelaria mine and a group of middle- and...of magmatic origin. Anhydrite from the Candelaria mine paragenetically overlaps with chalcopyrite. Fluid...0361-0128/01/3208/1799-28 $6.00 batholith, southeast of Copiapó, Chile (Fig. 1, Table 1). This belt, referred to as the...69° 70˚15' W b) Atacama Fault Zone Teresita Copiapó N Taltal Providencia Prospect Manto Verde |  | Dill, H. G., Bosse, H.-R., Henning, K.-H., Fricke, A., Ahrendt, H. (1997) Mineralogical and chemical variations in hypogene and supergene kaolin deposits in a mobile fold belt the Central Andes of northwestern Peru. Mineralium Deposita, 32 (2) 149-163 doi:10.1007/s001260050081 | Journal (article/letter/editorial) | | kaolinite and some quartz (Fig. 1, Tables 1, 2). The stope walls in the Chorobal mine are stained with...Chimu’’ Fig. 1 Geological map of the the Cajamarca Province (modified from Quispe and Castro 1980) showing...E Ecuador; CO Colombia; BR Brazil; B Bolivia; C Chile Methods Bulk samples were taken from kaolinized...of the Sulluscocha ‘‘laguna’’ contain kaolinite, quartz, some relict muscovite (Table 1) 151 Table 1...constituents Origin Abundant Common Rare Kaolinite Quartz White mica, Ca-REEenriched svanbergite Supergene |  | | Journal (article/letter/editorial) | | ores in the Candelaria-Punta del Cobre district, Chile Received: 24 September 2002 / Accepted: 6 August...Leeds, LS2 9JT UK Keywords Atacama region Æ Candelaria-Punta del Cobre Æ Chile Æ Copiapó Æ Iron oxide Cu-Au...Candelaria-Punta del Cobre district near Copiapó, Chile. The rocks in the area experienced hydrothermal...the ore deposits. Geologic context In northern Chile, a volcanic arc and a marine back arc basin developed...Triassic terrigenous Fig. 1 Geological map of northern Chile showing major cities and location of the Candelaria-Punta |  | | Journal (article/letter/editorial) | | displacements in the Precordillera of northern Chile By KLAUS-J. REUTTER, EKKEHARDSCHEUBER,Berlin and...Valley and the Western Cordillera of northern Chile, is made up of several elongate basement ridges...displacements in the Precordillera of northern Chile 137 )r!ada Blanca $uatacondo~ -- 21 ~ >" (~ ...LJ C3 - ,.. ~o~)y)_a .... :. 23 ~ / / / i Atacama ~ _ / Antofagasta t 24 ~ LJ i,. / dida...fault in the open pit of the Chuquiquamata copper mine is referred to as the, West Fissure~. In this paper |  | | Report (issue) | | hemimorphite, 3.6 cm, from the Laochang mine, Gejiu County, Yunnan Province, China. Mintreasure.com specimen...locality which he gives as the Laochang mine, Gejiu County, Yunnan Province, China. Some very similar-looking...gave “Dulong” as the mine name, gave “Laochang” as the name of a town and not of a mine, and put the whole...whole thing in Hunan, not Yunnan, Province. Checking Mindat, I find that these past few years’ limited outputs...Gejiu County, Honghe Autonomous Prefecture, Yunnan Province.” Thus, as with so many other Chinese locality |  | | Journal (article/letter/editorial) | | National University] at 06:43 31 December 2014 mine in Colorado, and they found virtually the entire...calcite, dolomite, siderite, barite, fluorite, and quartz. Associates also include the rare minerals zinkenite...tetrahedrite and pyrite specimen from the Anchor mine, Park City, Utah. The specimen was in the stock...examples at the present time are from the Sweet Home mine, near Alma, Park County, Colorado, where it occurs...with enargite and fluorite come from the Longfellow mine, Red Mountain district, San Juan County (D. Bunk |  | | Journal (article/letter/editorial) | | other minerals in thesedeposits,suchas sericite,quartz, K-feldspar, etc. These analysesare appliedto the... 755 observed normal"magmatic"O•8/O•6ratiosin quartz from veinsand hydrothermallyalteredquartz mon-...initial surfaceorigin of thesedeepcirwere recorded in quartz, K-feldspar and sericite. culating solutionsthe...nectionwith a magmaticsystem. For the Pb-Zn deposit at Providencia, Mexico, Ma#matic water is an 1-120rich solutionthat...atedwith compositestocks of granodioriteand/or quartz monzonite. These epizonal intrusionstypically are |  | | Journal (article/letter/editorial) | | tEPROM Ltda., PO Box 17219, Av. Providencia 2133 Of. 207, Santiago, Chile (Received 21 April 1994; revised...1995) A B S T R ACT: In the region of Illapel, Chile, dioritic and andesitic rocks of Cretaceous to Paleocene...chemical investigations of channel samples from this mine, involving a combination of optical microscopy,...White (1991). Various forms of silica such as quartz, tridymite, cristobalite, chalcedony and opaline...system shows quartz and mica forming the more central parts, giving way through quartz-kaolinite-chlorite |  | | Book | | . . . . . . . . . . . . . . . . . . 39 58 5 Chile . . . . . . . . . . . . . . . . . . . . . . . ....Atacama’s desert in the Pacific Ocean coast of Chile, Fig. 1.1) are prolific sources of exceptionally...all the South American countries together, except Chile. Similar geomorphological conditions of deflation...meteorites have been discovered there. Fig. 1.1 Atacama desert. Credit: Frans Swaalf 1.1 About This Catalogue...areas like, for example, in the desert of Atacama in Chile where meteorites are concentrated with the |  | | Report (issue) | | 90.0112◦−90.0301◦ Z=4 X-ray Powder Pattern: Providencia mine, Spain. 2.852 (100), 1.7174 (40), 2.548 (30)...17.3 5.7 2.2 1.5 50.2 Total 99.2 101.0 (1) Providencia mine, Spain; corresponds to (Cu0.47 Ni0.25 Fe0...veinlets (Providencia mine, Spain). Association: Pyrite, chalcopyrite, dolomite, quartz (Providencia mine...From the Providencia mine, six km east-northeast of Villamanı́n, Cármenes district, León Province, Spain...Spain [TL]. In Poland, in the Lubin copper mine, near Legnica, Zechstein copper district, Lower Silesia |  | | Journal (article/letter/editorial) | | New York, NY 10013-1917 Revista Geológica de Chile Servicio Nacional de Geología y Minería, Avda. Santa...Santa María 0104, Casilla 10465, Providencia Santiago, Chile Neues Jahrbuch fur Mineralogie Abhandlungen...on mineralisation in the Sierra Foothills gold province, central California, USA: A GIS-based reconnaissance...Volchenko and V.A. Koroteev The Stanovoi nickeliferous province of the Russian Far East— V.A. Stepanov, V.G. Moiseenko...EARTH SCIENCES Garnet xenocrysts from the Diavik mine, NWT, Canada: Composition, color, and paragenesis—Hayley |  | | Journal (article/letter/editorial) | | Vol. 61, 1966, pp. 1205-1213 STUDIES IN THE PROVIDENCIA AREA, MEXICO, II, K-AR AND RB-SR 'AGES OF INTRUSIVE...R. HART, AND H. D. HOLLAND ABSTRACT In the Providencia-Concepcion del Oro district, Mexico, hydrothermal...muscovitesamplesintergrownwith sulfideore from the Providencia Mine, and III) three albite-adulariamixtures from...intrusiverocksand hydrothermalmineralsin the Providencia-Concepcion del Oro area. INTRODUCTION A GREAT...formedbetween350ø and 190ø C (8, 9, 7). STUDIES IN THE PROVIDENCIA AREA, MEXICO 1207 The monzonitic-granodioritic |  | | Journal (article/letter/editorial) | | IN THE LIGHT STUDIES, PROVIDENCIA ZACATECAS, MEXICO • OF FLUID MINE, F. J. SAWKINS ABSTRACT ...bodies have a close spatial relationship to the Providencia granodioritestockwhich is continuousat depth...pyrite are the major sulfideminerals,and calcite and quartz are the gangue minerals. The bulk of the sulfide...Fluid inclusion studies were made on sphalerite, quartz, calcite and fluorite, the bulk of the data being...temperatureintervalfrom 350-200ø C. Calciteand quartz were generallyformedat temperatures below350ø C |  | | Journal (article/letter/editorial) | | OF THE FOR AND OXYGEN HYDROTHERMAL THE AT PROVIDENCIA, LEAD-ZINC ZACATECAS, ROBERT ISOTOPIC 'FLUIDS...fluid inclusionsin calcite,quartz, and sphaleritefrom severalmines at Providencia, Zacatecas,Mexico, was...calculationsbasedon the oxygenisotopiccomposition of quartz fall within the range calculatedfrom the calcite...incorporationof sedimentarysalt. INTRODUCTION T•v. Providencia miningcamp (Fig. 1) is situatedabout225 km southwest...Caja anticline. There are about30 ore pipesat Providencia, 10 of whichhavebeenminedextensively. The crosssection(Fig |  | | Journal (article/letter/editorial) | | Nearly all biotitesin a 2 km sectionacrossthe Providencia stock,Zacatecas, Mexico containbetween0.25 and...development of the leadzinc-silver oredeposits of the Providencia areawasduein part to the abnormally large chlorine...granitic or granoThe lead-zinc-silverdeposits at Providencia, dioritic intrusives. Although the origin of...rich would have fulfilled at stock,particularlyin quartz. 361 362 $TOLLERY, GEOLOGY ALONG BORCSIK...Providenciastockapproximately1,000 m belowthe upper mine workings in the Providencia district. The stocklies at the coreof |  | | Journal (article/letter/editorial) | | HydrothermalFluids Responsible for the Lead-ZincDepositsat Providencia, Zacatecas, Mexico ROBERTO. RYE AND JOSEPHHAFFTY...primary fluid inclusionsin quartz, calcite,and sphaleritefrom Providencia,Mexico, has beendetermined...om water leachesof two samples of inclusionsin quartz are 890 ppm Zn and 530 ppm Cu. Chloride is the...sulfur concentrationsof the inclusionsin calcite and quartz, analyzed as SO4, are below the level of detection...................... Chemical nature of the Providencia 634 ore fluids .... Sodium and potassiumconcentrations |  | | Journal (article/letter/editorial) | | Vol. 61, 1966, pp. 1390-1398 STUDIES IN THE PROVIDENCIA NEUTRON ACTIVATION INCLUSIONS HERBERT FROM...Fluid in inclusionsin four samplesof quartz from the Noche Buena mine, Zacatecas,Mexico, has beenanalyzedby...fromthedumpof the Chivoorebodyof the NocheBuena mine,20 km westof Providencia, Zacatecas, Mexico,were foundto contain...irradiation. GEOLOGIC SETTING The Noche Buena mine is located near the western end of the Sierra de...any detail,but are obviouslysimilar to thoseat Providencia(11). The ore occursin pipeswithinlimestone andcalcareous |  | | Report (volume) | | Yucunani mine __ ___ In pocket 5. Geologic map of the Yucunani II level and Bench 0, Yucunani mine ______...6. Geologic map of the Dolores I level, Yucunani mine In pocket 7. Structure sections of the Yucunani...pocket 8. Geologic map of the Reyes IV tunnel, Reyes mine _ In pocket 9. Geologic map of the Capulin and Paz.............. Aguila mine ........................................... Yucunani mine ................................... " Providencia mine ...................................... Reyes mine ................ |  | Roegge, J. S., Logsdon, M. J., Young, H. S., Barr, H. B., Borcsik, M., Holland, H. D. (1974) Halogens in Apatites from the Providencia Area, Mexico. Economic Geology, 69 (2) 229-240 doi:10.2113/gsecongeo.69.2.229 | Journal (article/letter/editorial) | | found to contain plagioclase, .biotite,orthoclase, quartz,augitc,some hornblende, and accessory apatite,zircon...esh,subhedral grains and in highlyalteredform. Quartz is presentin variableamounts,largelyasapparentlylate...light gray to grayish green with visible feldspar,quartz, and I'--I--I---I • 0.31 O.29 0.33 o 0.1 0:2...Intrusives in the Providencia o o.! Area GRAYBACKGRANODIORITE Samplesof fresh quartz monzoniteand granDdiorite...were'collectedfrom the Concepciondel Oro stock, from the Providencia stock, and from the Noche Buena stock; their |  | | Report (issue) | | Nomenclature of mines-_----__-_______-_.-__ San Luciano mine (ore bed no. !)._____________ Page 80 81 82 82...Montado mine (ore bed no. 1 and Sin Nombre ore bed)____--___-__-_-----_----_----_-----_ Rancheria mine (ore...(ore bed no. !)_______________ Cinco de Mayo mine (ore bed no. 1)__________ Smaller mines in ore bed no...2_____________________ Providencia group of mines (ore bed no. 3)_____ California-Lugarda mine (ore bed no. 3)...3) _______ Humboldt mine (ore bed no. 3)-___---_---____ Purgatorio mine (ore bed no. 3) ______________ |  | | Journal (article/letter/editorial) | | similardepositsare shownon the re- carbonateor quartz gangue.Calc-silicateskarndomgionalmapsbut are excludedfrom...depositsdiscussed in text. I = SantaEulalia, 2 -- Providencia-Concepcion del Oro, 3 = Naica, 4 = SanMartin...Sierra Madre terdominatedby carbonates,fluorite, or quartz. Small amounts of calc-silicates (<5%) maybe locallypresent...euenl• some districts, such as Santa Eulalia or Providencia- Concepcion del Oro, oreoccurswithinnumerous...Suchcontrasts arecitedasimportant ore controls at Providencia-Concepcion del Oro (Tripplett, 1952), SanMartin |  | | Journal (article/letter/editorial) | | ........................... Comparisonwith Providencia........................................... Q................................................. Quartz fluid inclusions.................................late-stagemineralization fixesthe fs•.at 10-ø-*•' atto. Quartz was depositedafter most metallic minerals. Fluid...Spaniardsfor their gold; the town'snamecamefrom a mine which reportedlyproduced400 gm of gold per ton....Macroscopicallyrecognizable are: plagioclase, biotite,quartz,hornblendeand magnetite. Also presentare orthoclase |  | | Journal (article/letter/editorial) | | evolution of the Sierras Australes (Buenos Aires Province / Argentina) By W. VONGOSEN,W. BUGGISCH,Erlangen...metamorphism proven by illite crystallinity and quartz deformation and recrystallization data. A temperature...l'illite et la dtformation et recristallisation du quartz. L'accroissement de la temp&ature de I'ENE vers...along strike. Based on illite crystallinity and quartz recrystallization data B~GGISCH (1987) emphasizes...-o Permian z "r < d Upper E. Carboniferous Providencia~ Sil urian 4700 4900 5100 5300 6300 13=3 0 |  | | Journal (article/letter/editorial) | | This figurealsoshowsthe isotopiccomposition of mine-drainagewater (averageof 4 analyses) from the Abbott...•80 valueresultcally to thoseof the SulphurBank mine,and both ing entirelyfrom water-rockexchange at...system. Banded and crustified veins of chalcedony,quartz, and calcitecommonlyrange up to several feet in...riseof the Sierra Nev.ada clusionsin sphalerite,quartz, and adularia from rangein the interim (O'Neil...Taylor (1973) determined8•sO in many samplesof quartz and altered rock from Tonopah and proved that a |
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