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Epidote from
Teniente Mine (Braden Mine), El Teniente, Rancagua, Cachapoal Province, O'Higgins, Chile

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Locality type:Mine
Classification
Species:Epidote
Formula:(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Epidote data
Locality Data:Click here to view Teniente Mine (Braden Mine), El Teniente, Rancagua, Cachapoal Province, O'Higgins, Chile
Data Identifiers
Mindat Occurrence Record ID:617106
Long-form Identifier:1:3:617106:3
GUID (UUID V4):0
Nearest other occurrences of Epidote
14.9km (9.3 miles)ⓘLa Huifa deposit, El Teniente, Rancagua, Cachapoal Province, O'Higgins, Chile
83.0km (51.6 miles)ⓘLo Aguirre mine, Melipilla Province, Santiago Metropolitan Region, Chile
References
Singer, D.A., Berger, V.I., Moring, B.C. (2008) Porphyry copper deposits of the world: Database and grade and tonnage models, 2008.Open-File Report 2008-1155
Reference Search (possible matching items)
Spencer, E. T., Wilkinson, J. J., Creaser, R. A., Seguel, J. (2015) The Distribution and Timing of Molybdenite Mineralization at the El Teniente Cu-Mo Porphyry Deposit, Chile.Economic Geology, 110 (2) 387-421doi:10.2113/econgeo.110.2.387
Journal (article/letter/editorial)
Molybdenite Mineralization at theElTeniente Cu-Mo Porphyry Deposit,ChileEdward T. Spencer,1,† Jamie J...DivisiónElTeniente,Rancagua,ChileAbstractTheElTeniente Cu-Mo porphyry deposit,Chile, is one...of diorite finger porphyries and the compositeTeniente Dacite Porphyry. These units acted as effective...veins and breccias. Theseare abundant at shallowmine levels and show a close spatial relationship with...series of concentric faults associated with theBraden Breccia Pipe. Mineralization in this paragenetic
Armbrust, G. A., Oyarzun M., J., Arias, J. (1977) Rubidium as a guide to ore in Chilean porphyry copper deposits.Economic Geology, 72 (6) 1086-1100doi:10.2113/gsecongeo.72.6.1086
Journal (article/letter/editorial)
theChilean porphyry copperdepositsin the E1Teniente (Braden), Rio Blanco, and LosBronces (Disputada)...following conclusions,thoughbasedon the study at E1Teniente, Rio Blanco, andLos Bronces,may alsobe applicableto...distributionof Rb in rocksfroin the leachedcappingat E1Teniente. Due to this immobility of Rb, weathering of the...montmorillonite,sericite),and prop-ylitic (chlorite,epidote, carbonates). Deposits thermal fluid as it passesinto...locations of E1Teniente, Rio Blanco, and Los Bronces mines.Modified from Mapa Geo16gicadeChile, Instituto
Armbrust, G. A., Gannicott, R. A. (1980) K/Rb ratios as a source indicator for hydrothermal fluids at the Seneca volcanogenic massive sulfide deposit, British Columbia.Economic Geology, 75 (3) 466-470doi:10.2113/gsecongeo.75.3.466
Journal (article/letter/editorial)
Sampleswere analyzed for majorporphyrycopperdepositsinChile showthat:elementsand Rb by X-ray fluorescencespectroscopy...The mineralized interval consistsof a rhyolitemine its size and shape.lapilli tuff to tuff brecciahavinga...PotossicEli386Alterationof DociteofiI 200I • ?•00 600PorphyryIITenienteSeeWater...leachedfrom the adjacentwall rocks.sericite,calcite,epidote,apatite,and pyrite. In zone The watershave low...the K/Rb ra-the rocks.DiscussionSenecaandElTeniente depositAll of the 19 samplesfrom the Senecadepositcontain
Ford, J. H. (1978) A chemical study of alteration at the Panguna porphyry copper deposit, Bougainville, Papua New Guinea.Economic Geology, 73 (5) 703-720doi:10.2113/gsecongeo.73.5.703
Journal (article/letter/editorial)
HydrothermalK-feldspar, Fe-Tioxides, chlorite, sericite, andepidote show limited compositionalvariations. Chemical...irregular porouspatchesor clotswhich are generallymine intrusives and their relationshipto both contem...grouped togetheras late, postperiod of intrusionin themine region is considered tive assemblagesK-silicate...selvagesco•nprisefrom most of total rock near •ninemine porphyriesporphyriesto< 1% near outer limit of...when present.KaverongQuartzArea adjacent tomine porphyriesBiotite-chlorite-K-feldspar-magnetite-anhydrite
Olade, M. A., Fletcher, W. K. (1975) Primary dispersion of rubidium and strontium around porphyry copper deposits, Highland Valley, British Columbia.Economic Geology, 70 (1) 15-21doi:10.2113/gsecongeo.70.1.15
Journal (article/letter/editorial)
granitoid pluton of Triassic age, ranging in com(epidote,calcite,montmorillonite). Of greaterim- positionfrom...McMillan (1972), and Hylands (1972). Major chlorite,epidote,carbonate,and zealire are domi-porphyry copper...respectively,in altered andesitesassociatedwith theBraden porphyry copperdeposit. Althoughthe BethlehemJA...is enrichedin theouter propylitic zone whereepidote,chlorite, zeolites, and carbonateminerals are dominant...,1971,Rubidiumas a guideto ore at E1Teniente (Braden),Chile [abs.]: ECON.Gr.oI.., v. 66, p. 977.Brabec
Hollister, Victor F. (1978)Geology of the Porphyry Copper Deposits of the Western Hemisphere. Society of Mining Engineers, New York.
Book
Orogen .3 ¢ Radiometric Ages NearEl Salvador and Potteriics,Chile .4 ¢ Section Through Arequipa, Peru...Through Potrerillos,Chile.;6 ¢ Potash Index of Igneous Rocks, Atacama RegoChile :7 ¢ Michiquillay...Geology (Peru) .8 © Structure at Chuquicamata,Chile .9 ¢ Surface Geologic Map, Michiquillay10 © Surface...Plutonic Belt, ies27 @ Geology of the Kobuk-KoyukukProvince (Alaska).28 © Interior Belt (Alaska).3;,...tbege genesiea46 © Structure Visible in Gurr atEl Nie :47 ¢ Structural Outline at Copper Basin.;
Fenton, Michael D. (1983) The mineral resource potential of the Wadi Habawnah and Najran quadrangles, sheets 17/44A and 17/44C, Kingdom of Saudi Arabia.Open-File Report Vol. 1983 (83-9) US Geological Surveydoi:10.3133/ofr839
Report (issue)
performed by the author and by F. Elsass and A. H. El Bazli. Copper, lead, zinc, gold, silver, nickel,... G. I. Seiner (USGSComputer Section), and A. H.El Bazli (USGS technician) isgratefully acknowledged...individual multiphase intrusions, constitutea tinprovince in which tin and niobium deposits are confined...studying three major porphyry copper deposits inChile, Armbrust and others (1977) concluded that rocks...low K/Rb ratios.For example, at theElTeniente(Braden)mine, rubidium contents range from an average
Haslam, H. W., Kimbel.I, G. S. (1981) Disseminated coppermolybdenum mineralisation near Ballachulish, Highland Region.Mineral Reconnaissance Programme Report 43. Institute of Geological Sciences
Report (issue)
Geochemical and geophysical investigations aroundGarrasMine, near Truro. Cornwall34Molybdenite mineralisation...associated with the Skiddaw Granite near CarrockMine, Cumbria8Investigation of stratiform sulphide...Scotland3810Geophysical surveys around Talnotrymine,Kirkcudbrightshire, ScotlandGeophysical evidence...hornblende has mostly been replaced by chloriteandepidote is now absent; this medium-intensityalteration...mineralisation and of chlorite, calc­ite andepidote in the more weakly altered rocks,especially those
Misra, Kula C. (1999)Understanding Mineral Deposits. Kluwer Academic Publishers.
Book
disseminating the information, themine geologists andmine managers who have madethemine visits a rewarding experience...concentrationrequired to achieve the break-even point for amine in terms of revenue and costs. Anydetailed exploration...epochs. Following Tumeaure (1955), ametallogenicprovince may be defined as a mineralized area or region...The size of a metallogenicprovince can be as large as the SuperiorProvince (Canadian Shield) or as small...as theUpper Michigan Peninsula native copperprovince. Similarly, a metallogenic epochcan be as broad
Brookins, Douglas G. (1990)Mineral and Energy Resources Occurrence, Exploitation, and Environmental Impact. Merrill Publishing Company, Columbus, OH.
Book
the presence of green minerals such as chlorite,epidote, and amphibole. The coarse-grained equivalent of...used. Where high-grade ore occurs at some depth,amine shaft may be sunk and drifts (tunnels) run from...setting, which may be referred to as ametallogenicprovince. The porphyry copper belt in the western part...Northand South America is one such well-definedprovince, as is the sedimentary copper belt in Zambia-Zaire...to meet our needs rather thanmine our ownresources. Only if wemine U.S. copper will gold production
 
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