 | Bissig, Thomas, Lee, James K. W., Clark, Alan H., Heather, Kevin B. (2001) The Cenozoic History of Volcanism and Hydrothermal Alteration in the Central Andean Flat-Slab Region: New 40Ar-39Ar Constraints from the El Indio–Pascua Au (-Ag, Cu) Belt, 29°20′–30°30′ S. International Geology Review, 43 (4) 312-340 doi:10.1080/00206810109465016 | Journal (article/letter/editorial) | | Canada b Barrick Chile Ltda. , Barrio Industrial Late 58, Alto Penuelas, Coquimbo, Chile Published online:...HEATHER Barrick Chile Ltda., Barrio Industrial Late 58, Alto Peñuelas, Coquimbo, Chile Abstract Ninety-three...from carefully documented outcrops or underground mine exposures on the Chilean and Argentinian flanks...29° and 30°30' S, north and south of the El Indio mine. Additional ore bodies, all of epithermal type,...been mined. These include the acid-sulfate type Kimberly and Wendy breccia pipes of the Tambo district |  | | Journal (article/letter/editorial) | | Processes in the El Indio-Pascua Au-Ag-Cu Belt, Chile and Argentina THOMAS BISSIG,* ALAN H. CLARK,† JAMES...erosion surfaces of the Atacama desert of northern Chile and southern Peru, are considered to have formed...on supergene processes in the Andes of northern Chile and southern Peru has long been recognized (e.g...Indio-Pascua gold-silver-copper belt which straddles the Chile-Argentina frontier along the tectonic and physiographic...formed the geochronologic 971 972 BISSIG ET AL. Chile Antofagasta PE R U -C Puna Tucumán La Coipa |  | Deyell, C.L., Rye, R.O., Landis, G.P., Bissig, T. (2005) Alunite and the role of magmatic fluids in the Tambo high-sulfidation deposit, El Indio–Pascua belt, Chile. Chemical Geology, 215 (1) 185-218 doi:10.1016/j.chemgeo.2004.06.038 | Journal (article/letter/editorial) | | high-sulfidation deposit, El Indio–Pascua belt, Chile C.L. Deyella,*, R.O. Ryeb, G.P. Landisb, T. Bissigc...deposit, located within the El Indio–Pascua belt in Chile, produced almost 25 t (0.8 M oz) of gold from altered...Indio–Pascua belt, within the Main Cordillera of Chile (Fig. 1). This belt hosts widespread zones of acid-sulfate...epithermal deposits and prospects, including the El Indio mine (N15 t gold produced; Heather, personal communication...100 km long and 30–40 km wide, and straddles the Chile–Argentina border (Fig. 1). Hydrothermal systems |  | | Report (issue) | | Transvaal-----British Guiana: Do-------Mazaruni district--------Chile: Do-------Near Valparaiso----------- 1.000 Australia:...Timbarra, New South Wales- 3.406 Ecuador: Loja Province------------- Do-------Do-------- ,.. Do-------Quartz...Mazaruni River-----------Diorite------Ecuador: Loja Province------------Diorite porphyry. Do-------Do--------...Mazaruni and Essequibo Do-------Rivers. Ecuador: Loja Province------------Porphyry------ Andesite _____ _ Prophylite...placer----------- Diabase porphyry. Ecuador: Loja Province------------- United States: Cheney, Ritzville |  | | Journal (article/letter/editorial) | | [«br Indian Hollow tuff Staley Pasture tuff [MSI Kimberly rhyolite JMkr Delano Peak Series Delano Peok...deposits of uranium near the summit of Mount Belknap. Mine roads, bulldozed across the crests of the Tushar...fresh surface, thin section examination reveals sericite, chlorite, clay minerals, magnetite, and calcite...crystalline, either as fine feldspar-quartz or as sericite-chlorite-clay alteration. In general, the Bullion...along Deer Creek and near Kim- low in Deer Creek, a mine road has cut through a 30-foot exposure of this |  | | Journal (article/letter/editorial) | | sulphideore and are characteristicallyearlier than sericite. The more important clay minerals include hydromuscovite...commonlywith biotite. Pyrite often accompanies sericite but at San Manuel the highly pyritic alteration...whichargillaceous mineralswere developedearlier than sericite,which was formed along quartz-pyriteveins. This....Ajo, Ely, Bagdad,Bingham(in part). 2. Quartz-sericite-pyrite.Inspiration-Miami,Ray, Sacramento Hill...example,hasa largeamount of ore in whichquartz-sericite andquartz-orthoclase are dominant, andalso a largemassin |  | | Journal (article/letter/editorial) | | continues. The most characteristic minerals include sericite,quartz, chlorite, sulfides,epidote,zoisite, clinozoisite...productconsistingin somedistricts,for example, of quartz and sericite. A conspicuous feature of the alteration of the...replacement of limestone.In the Northern Empire Mine of Canada(11) the rocksnear the veinsare brown due...locally tourmaline. At the Nighthawk Penninsulargold mine Byers (19) found the rock darkeneddue to the development...epidote,mariposite,and serpentine. At the Chesterfield Mine (14) an emerald-greenzone is described. Byers (19) |  | Sun, H., Wu, J., Yu, P., Li, J. (1998) Geology, geochemistry and sulfur isotope composition of the Late Proterozoic Jingtieshan (Superior-type) hematite-jasper-barite iron ore deposits associated with stratabound Cu mineralization in the Gansu Province, China. Mineralium Deposita, 34 (1) 102-112 doi:10.1007/s001260050188 | Journal (article/letter/editorial) | | with stratabound Cu mineralization in the Gansu Province, China Received: 19 March 1997 / Accepted: 14...deposit, located in the western part of the Gansu province, China, occurs in a Precambrian tectonic-stratigraphic...1996) 104 Fig. 3 Geology map of the Jingtieshan mine (after Wu Jieren and Yu Pusheng 1996) Fig. 2 Stratigraphic...Fe-Cu mine assemblages, eight stratigraphic units (Fig. 2) have been distinguished in the mine area,...layer Z21 ; (3) sericite-quartz phyllite Z31 ; (4) graphitic chlorite-quartz-sericite phyllite Z41 ; |  | Adomako-Ansah, Kofi, Mizuta, Toshio, Hammond, Napoleon Q., Ishiyama, Daizo, Ogata, Takeyuki, Chiba, Hitoshi (2013) Gold Mineralization in Banded Iron Formation in the Amalia Greenstone Belt, South Africa: A Mineralogical and Sulfur Isotope Study. Resource Geology, 63 (2) 119-140 doi:10.1111/rge.12000 | Journal (article/letter/editorial) | | ankerite-dolomite series, siderite, chlorite, muscovite, sericite, hematite, pyrite, and minor amounts of chalcopyrite...trending greenstone belts, 120 located in the Kimberly block of the Kaapvaal craton (Fig. 1a, b). It...Barton et al., 1986). West Province of South Africa. Figure 3 illustrates the mine geology of the Gouplaats...composed of chlorite, ferroan dolomite, minor sericite, and lesser amounts of quartz and hematite. The...muscovite-chlorite-carbonate -quartz schist 122 Fig. 3 Mine geology of the Goudplaats orebody at 3 level (90 |  | | Journal (article/letter/editorial) | | chlorite,calcite,and sericite. In addition tourmalineis reportedfrom one mine, the Sonsof G•valia. *...magnetite,rutile, calcite, dolomite,siderite,ankerite,sericite,chlorite,and roscoelite. • To thesetourmaline...chloritic,foliatedschist,as in the Oroya-Brownhill mine,to pale greensericiteschists andto bandedor massive...associated with finegrainedquartz,dolomite,and sericite. In' descriptions of the lessalteredrocksilmenitepartlyalteredto...well as minor amountsof sharply-defined foils of sericite. The carbonategrains encloseirregular masses of |  | | Report (issue) | | map. All rocks recrystallized. Most have obvious sericite, biotite and chlorite. Siltite in one outcrop...laminae. Some argillite has visible biotite and sericite on pale lavender subphyllitic surfaces. Soft sediment...position of the large sill below the Sullivan Mine, Kimberly, B.C., and interpretation that the Sullivan... Hamilton, J. M., 1984, The Sullivan deposit, Kimberly, British Columbia - A magmatic component to genesis |  | MAMBANE, P. W., HEIN, K. A. A., TWEMLOW, S. G., MANZI, M. S. D. (2011) PSEUDOTACHYLITE IN THE SOUTH BOUNDARY FAULT AT THE COOKE SHAFT, WITWATERSRAND BASIN, SOUTH AFRICA. South African Journal of Geology, 114 (2) 109-120 doi:10.2113/gssajg.114.2.109 | Journal (article/letter/editorial) | | mining lease (or Cooke Section) with the Ezulwini Mine lease to the south (Figure 2); the fault does not...quartzite, metaconglomerate and shale units in the mine. It is overlain by the Ventersdorp Conglomerate...auriferous meta-conglomerate and shale units of the Kimberly Formation of the Turffontein Subgroup of the Central...Kimberley Formation separates the upper and the lower Kimberly reefs; it is only exposed in drill-hole Figure...haulage. View is along the haulage to the south. Sericite alteration of the wall-rock quartzite around the |  | | Journal (article/letter/editorial) | | Pmorn (19tt0)The leucite-bearingrocks of the west Kimberly area, WesternAustralia. GeotrSoc.Lontl. Quart...Nepheline shows partial to complete replacement by sericite (?) or a clay mineral, and calcite, with the degree...very fine-grained mixture of calcite and possibly sericite or a clay mineral. Small amounts, and difficulties...(1960) describes the alteration of nepheline to sericite and zeorites in rocks of this region. The relative...solutions. rncreasing replacement of the nepheline by sericite and calcite toward the contact with zone 5 indicates |  | | Journal (article/letter/editorial) | | upward into pervasive or veinletdominated quartz-sericite alteration. Adjacent Ely Limestone contains hydrothermal...coefficient of variationof 2 to 5 per(1957) mappedthe mine geologythen exposedat the •vest end of the district...char- veinletsof quartz, biotite, orthoclase,sericite,and acteristicallyhas a distinctiveaplitic groundmass...thesealterationtypescan sometimes be mapped,as Quartx-sericite alteration has resulted from intense baseleachingof...porphyry,yielding a porouswhite aggregateof quartz, sericite,pyrite, and sometimes subordinate chalcopyrite |  | | Report (volume) | | few. The gold- and silver-bearing veins in the Kimberly area on the northern slope of the Tushar Mountains...Plateaus subprovince and the Colorado Plateaus province proper (fig. 1). Marysvale is in the Sevier River...Gray Hills; 8, Deertrail mine; 9, Mineral Products mine; 10, Sheeprock mine; 11, Blue Lake. The broad...conclusion is supported by radiometric ages on sericite (12-14 m.y., Bassett and others, 1963) and alunite...uranium area. Located 61 m west of the Freedom No. 2 mine; lat 38"29'58". long ll^'SS". 8. Altered quartz |  | | Report (issue) | | few. The gold- and silverbearing veins in the Kimberly area on the northern slope of the Tushar Mountains...Plateaus subprovince and the Colorado Plateaus province proper (tig. 1). Marysvale is in the Sevier Valley...Gray Hills; 8, Deertrail Mine; 9, Mineral Products Mine; 10, Sheeprock mine; 11, Blue Lake The Marysvale...conclusion is supported by radiometric ages on sericite (12-14 m.y., Bassett and others, JL963) and alunite...at the Copper Butte-Winkleman mine area (fig. 2) and the. Trinity mine (just east of the Sevier River |  | | Report (issue) | | .................................44 Grenville Province, Quebeck and Ontario............................orebody.....................39 20. Grenville Province of the Canadian Shield......................46...Saskatchewan.............53 22. Geology of the Rossing mine area...............................55 iii Illustrations...cross section of Verna and Fay orebodies, Eldorado mine...................................................temperature and & 0 in hydrothermal fluids, Fay mine................................................ |  | | Report (issue) | | of properties.......................... 44 Grant mine . . . . . . . . . • . . . . . . . . . . . . . .... . . . . . . . . . . . . . . Okanogan Free Gold Mine.................................... Golden Chariot... . . . . . . . . . . . . . . . . . . . . . Ruby Mine . . . . . . . . . . . . . . . . . . . . . . . ..... . . . . . . . . . . . . . . . . . Golden Zone Mine. . . . . . . . . . . . . . . . . . . . . . . . ... . . . . . . . . . . . . . . . . . . . . . Kimberly Mine . . . . . . . . . . . . . . . . . . . . . . |  | | Journal (article/letter/editorial) | | majorore-bearing units (upper graphite schists,main mine schists,and lower mine schistsII), which contain beddedcarbonates...Bedding at/dude Fla. 1. Locationmapand surfacegeology,Mine Valleyoverthe JabilukaI and II orebodies. of Jabiluka... little more than $00 m exposedin the immediate mine area, althoughsomereconnaissance has been done along...100 m eastof ]abilukaI. MEMBER mediumgrainedby mine terminology).Conglomeratesrangefrom thin discretelayersof...portions of the Upper Fine Memberat the eastend of the Mine Valley), someof theseunitscropoutasextremelyfriable |  | | Journal (article/letter/editorial) | | Belnhausen, Darmstadt, Germany, ankerite, 138. Benallt mine, Caernarvon~hire, Wales, bannisterite and ganophyllite...Supergene alteration of copper deposits, northern Chile: I. Chalcopyrite-bornite solid solutions in the...50. Dundas, Montagu County, Tasmania, Dallas gem mine, San Benito County, California, melanite, 775. Dalyite...Finland, eryst., anal., opt., X-ray, 444. Harstig mine, Sweden, ganophyllite, bannisterite, 893. Hastingsite...Kangerdlugssuaq, East Greenland, melanite, 775. Kaso mine, Totiki prefecture, Japan, kasoite, 914. Kasoite |  | | Report (issue) | | subphyllitic argillite contains visible biotite and sericite on pale lavender parting. Soft-sediment deformation...the sulfide mineralization at the Sullivan Mine, Kimberly, B.C., formed in sediment that accumulated... Hamilton, J. M., 1984, The Sullivan deposit, Kimberly, British Columbia - A magmatic component to genesis |  | | Journal (article/letter/editorial) | | Churchill County Chalk Mountain District Chalk Mountain mine: calcite, cerussite, chlorargyrite, descloizite...(top). Clinotyrolite spray, 3.4 mm across, Lovelock mine, Churchill County. Figure 2 (bottom). Wulfenite...Lovelock mine: annabergite, atacamite, ciinotyrolite, erythrite, retgersite, tyrolite Nickel mine: annabergite...prospects: beryl, chrysoberyl, dumortierite Key West mine: chalcopyrite, glaukosphaerite, godlevskite(?),...spenylite, violarite Gold Butte District Azure Ridge mine: aurichalcite, chrysocolla, hemimorphite, malachite |  | | Journal (article/letter/editorial) | | and iron oxides notably, hematite and Quartz Sericite magnetite (5) Chlorite I. Alsa known as arkoso...the volcanic center and variations chlorite and sericite beneath a few of the sulfide in Eh to the depth... 1966, On the origin of the Sullivan orebody, Kimberly, B. C., in Tectonic History and Mineral Deposits... p. 321-345. Central Balabac Island, Palawan Province, Philippines: Ecoa. G•.o•..,v. 58, p. 107-130 |  | | Journal (article/letter/editorial) | | logic studies and exploration at Kokomo, including mine map** Present address: Centerfor Research in Economic...sandstones host some vein ore in the Queenof the West mine (Emmans,1898). mentat Climax(Wallace et al.,1968;Tweto...Calcite vein dip, ID Surface C-Oisotope sample 0 Mine C-Oisotope sample Formation 13mj Jacque Mountain...alsoweremapped asrhyolitebyKoseh- alsarepartiallyalteredto sericite, calcite,andohiorite. siltstone. KOKOMO MINING...original teredto argillicandsericitic (quartz-sericite-pyrite) assem-textureof the limestone, andit wasrecognized |  | | Report (issue) | | ores-----------------------------Mine descriptions----------------------------------Wilfley-Kimberly mine __ --------________________...Consolidated mine, Eldorado and Wilson mines, Felicia Grace mine, and Champion (New York) mine----------... Underground geologic maps of the Wilfley and Kimberly, Robinson, and Lucky Strike-Victory mines ____...________________________________ _ 21. Map of outlines of mine workings and ore bodies------------------------...part of central Colorado. Excluding the molybdenum mine at Climax, which is not described in this report |
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