 | | Journal (article/letter/editorial) | | Physics of Geological Processes, University of Oslo, Norway Deutsches GeoForschungsZentrum (GFZ), Potsdam,...mineralogy of the altered basaltic clasts (chlorite, epidote, albite, actinolite) corresponds to low-grade metamorphic...al., 2001; Zubtsov et al., 2004), simulations (Bakke and Øren, 1997; Lander and Walderhaug, 1999; Bernabé...peridotitic clasts of the Solund basin (Western Norway) experienced strong chemical alteration (metasomatism)...continental Devonian Basins situated along the coast of W Norway (Fig. 1). The basins formed in response to lateor |  | | Journal (article/letter/editorial) | | the Uppermost Allochthon (UmA) mostly in northern Norway. The Neoproterozoic and Cambrian history of this...á P.M. Ihlen Geological Survey of Norway, N-7491 Trondheim, Norway e-mail: tor.grenne@ngu.no F.M. Vokes...Engineering, Hùgskoleringen 6, N-7491 Trondheim, Norway host to two characteristic types of stratabound-stratiform...higher levels in the nappe pile, in southwestern Norway, the western Trondheim Region, the western Grong...in the western Grong District and in southwest Norway. Orthomagmatic ores occur in the form of PGE mineralisation |  | | Journal (article/letter/editorial) | | es,kaolinitc,smectite,illitc, quartz, calcite,epidote,and pyrite. The fine-grain is typically altered...chloriteshigher in the section. Zeolite minerals Epidote Zeolitesare foundin the uppermostpart of the drill...85-18. Pyrite occursin association with chlorite, epidote, hematite, and magnetite.Additionally,pyrite Downloaded...Kristmannsdottir, ence of clay, chlorite, and minor epidote at depths Alteration Zoning Pattern 1972). At...phasespredominant in one zone can occur in another. Epidote occursat Summaryof AlterationZonesfor Five GeothermalSystems |  | | Journal (article/letter/editorial) | | skarn with Fe diopside ± anorthite; amphibole-epidote skarns with actinolite + clinozoisite ± bytownite...started with hydration reactions to form amphibole-epidote skarns, probably under lower XCO2 conditions. Ore...(Skaarup, 1974) and Bjellatind areas (Larsen, 1991) in Norway, and the Brazilian Shield (Einaudi et al., 1981)...carbonate ± Fe oxides (Fig. 6). Amphibole-epidote skarns Amphibole-epidote skarns comprise a dominant amphibole-rich...locally an epidote-rich skarn (10%), hereafter referred to as amphibole skarn and epidote skarn, respectively |  | | Journal (article/letter/editorial) | | Geosciences, UiT The Arctic University of Norway in Tromsø, 9037 Tromsø, Norway Center for Arctic Petroleum Exploration...(ARCEx), UiT The Arctic University of Norway in Tromsø, 9037 Tromsø, Norway 3 Geoscience Centre, Georg-August-University...the Alta–Kvænangen tectonic window in northern Norway yielded latest Mesoproterozoic (approximately 1050...(approximately 425 Ma) and was accompanied by epidote–chloriterich, stilpnomelane-bearing cataclasite...Brittle faulting and previous age dating in north Norway Brittle faults trends Precambrian basement rocks |  | | Journal (article/letter/editorial) | | strongly altered to combinations of chlorite, epidote, carbonate, and sericite, whereas plagioclase is...ferromagnesian minerals are generally altered to chlorite, epidote, sericite, carbonate, and sulfides. Tonalite I...molybdenite, with specular hematite in places. Epidote-chlorite alteration (propylitic) and veining are...side of the north zone. Plagioclase is altered to epidote whereas ferromagnesian minerals are altered to...chlorite and the fine-grained matrix to a mixture of epidote, chlorite, sericite, and carbonate. Carbonate veins |  | | Journal (article/letter/editorial) | | to the Au–Cu-bearing veins at Chemchem mine. c Epidote–K-feldspar–sericite alteration of Ikulu metapelite...Au–Cu–Pb-bearing veins at Chemchem mine. d Chlorite–epidote–pyrite alteration of amphibolite adjacent to a...replaced by chlorite (Chl), sericite (ser) and epidote (Ep) infiltration into the metapelitic country...includes the formation of chlorite, sericite, epidote, quartz and calcite (Fig. 2b–d). Plagioclase and...Kiel. For the biotite, plagioclase, amphiboles, epidote, zoisite, muscovite and chlorite analysis, analyses |  | | Report (chapter) | | volcanic stratigraphy of the Gjersvik Nappe, central Norway* C. Halls Division of Mining Geology, Royal School...nstitutt, Norges "rekniske H~gskole, Trondheim, Norway I. Ferriday Division of Mining Geology, Royal School...London, England A. Haugen Grong Gruber A/S, Joma, Norway A. Rankin Division of Mining Geology, Royal School...Pre-tectonic segregations, veins and vesicle fillings of epidote, albite, chlorite, carbonate and quartz related...verified by the abundance o f nearly monomineralic epidote clasts in the derived conglomerates. The relationship |  | | Report (issue) | | I I I ii, Soil Sa1npling in the Roros (Rui & Bakke, 1975) district, Norwegian Caledonides, massive...deposits contain thin ( ? ) meta tuffs Rui and Bakke (1975) stressed that the origin of the ores was...Edinburgh, Vol. 66, pp. 267-283. RUI, I. J. and BAKKE, I. 1975. Stratabound sulphide mineralisation in...carbonates {calcite and ( ?) ferroan dolomite) whilst epidote is only occasionally present. A higher metamorphic...carbonate (calcite and (?) ferroan dolomite) with epidote and chlorite. distinctive fine banding caused |  | Fornadel, Andrew P., Spry, Paul G., Melfos, Vasilios, Vavelidis, Michael, Voudouris, Panagiotis Ch. (2011) Is the Palea Kavala Bi–Te–Pb–Sb±Au district, northeastern Greece, an intrusion-related system?. Ore Geology Reviews, 39 (3) 119-133 doi:10.1016/j.oregeorev.2011.01.002 | Journal (article/letter/editorial) | | allanite, apatite, zircon, and epidote (Neiva et al., 1996). Epidote is inferred to be of magmatic origin...phases include zircon, monazite, allanite, and epidote Formed at depth of ~ 3 to 5 km Geochemical signature:...Goldfarb, R.J., Smith, M., Roberts, P., Hulstein, R., Bakke, A.A., Bundtzen, T.K., 2002. Geology, exploration..., Newberry, R.J., Layer, P.W., DiMarchi, J.J., Bakke, A.A., Masterman, J.S., Minehane, D.J., 1997. Plutonic-related |  | Rosenberg, J. L., Spry, P. G., Jacobson, C. E., Vokes, F. M. (2000) The effects of sulfidation and oxidation during metamorphism on compositionally varied rocks adjacent to the Bleikvassli Zn-Pb-(Cu) deposit, Nordland, Norway. Mineralium Deposita, 35 (8) 714-726 doi:10.1007/s001260050274 | Journal (article/letter/editorial) | | to the Bleikvassli Zn±Pb±(Cu) deposit, Nordland, Norway Received: 1 March 1998 / Accepted: 3 May 2000 ...Zn±Pb±(Cu) volcanogenic massive sul®de deposit, Norway, are dependent upon the competing eects of f O2±f...naturvitenskapelige Universitet, 7034 Trondheim, Norway eation of a sul®dation±oxidation halo bordering...the Bleikvassli Zn±Pb± (Cu) deposit of Nordland, Norway. The 6.5 Mt Bleikvassli deposit is well suited...intense but irregularly distributed biotite±quartz epidote alteration in the amphibolite structurally below |  | | Journal (article/letter/editorial) | | diopsidicpyroxene,andbornite-chalcopyrite, cut by epidote,actinolite,and pyrite veinlets;andgenerallyresembles...schistose orthogneiss, albite-chlorite-muscovite-epidote assemblages indi- and aplitic and pegmatiticgneisses...the plutonswith countryrocksarebothdiscordant to epidote-amphibolite faciesassemblages areseenin andconcordant;...representativeof the horn- blendehornfelsto albite-epidote hornfelsfacies.Assemblages of calc-hornfels co... calc-silicates (granditc,andraditicgarnet,or epidote) the pluton, a relict gradientwhich survivedover- |  | Wilson, A. J., Cooke, D. R., Stein, H. J., Fanning, C. M., Holliday, J. R., Tedder, I. J. (2007) U-Pb and Re-Os Geochronologic Evidence for Two Alkalic Porphyry Ore-Forming Events in the Cadia District, New South Wales, Australia. Economic Geology, 102 (1) 3-26 doi:10.2113/gsecongeo.102.1.3 | Journal (article/letter/editorial) | | Colorado, and Geological Survey of Norway, 7491 Trondheim, Norway C. MARK FANNING, Research School of...gold-copper porphyry deposits (Ridgeway, Cadia Quarry, Cadia Hill, and Cadia East) and two related ironcopper-gold...stock that lies immediately southwest of the Cadia Quarry deposit are early Late Ordovician (456–454 Ma)...quartz monzonite porphyry stock that hosts the Cadia Quarry and Cadia Hill orebodies and an intermineral quartz...episodes of mineralization associated with the Cadia Quarry deposit, suggesting a complex history between 460 |  | | Report (issue) | | Peridotite at Engenbræ, Holandsfjord, Northern Norway. With 13 textfigures. Sammendrag: Bergartene omkring...1929: The Cambrian beds of the Mjøsen district in Norway. - Norsk geol. tidsskr., 10, h. 3-4, pp. 307-365...1953: The Middle Ordovician of the Oslo Region, Norway. l. Introduction to stratigraphy. - Norsk geol...in amphibolite. l. Green epidote (with some garnet). 2. Quartz. 3. Red epidote and grossularite. 4. Concentration...yellow beryl (Gamle gruve), brookite (Gamle gruve), epidote (Amalie), fluorite (Amalie), chalcocite, bornite |  | Cave, Ben J., Barnes, Sarah-Jane, Pitcairn, Iain K., Sack, Patrick J., Kuikka, Helena, Johnson, Sean C., Duran, Charley J. (2019) Multi-stage precipitation and redistribution of gold, and its collection by lead-bismuth and lead immiscible liquids in a reduced-intrusion related gold system (RIRGS); Dublin Gulch, western Canada. Ore Geology Reviews, 106. 28-55 doi:10.1016/j.oregeorev.2019.01.010 | Journal (article/letter/editorial) | | albite, carbonate (calcite and ankerite), and epidote (Maloof et al., 2001; Kirk, 2016) characterize...Dominant vein minerals are quartz, K-feldspar, epidote, and plagioclase. Quartz contents vary significantly...amounts of quartz, plagioclase, and K-feldspar, ± epidote (Figs. 3A-H). Accessory minerals include carbonate... R.J., SMITH, M.T., ROBERTS, P., HULSTEIN, R., BAKKE, A.A. & BUNDTZEN, T.K. 2002. Geology, exploration...HART, C., ROMBACH, C., THOMPSON, J., SMITH, M., BAKKE, A. & GOLDFARB, R. 2002. Absolute timing of sulfide |  | Markowski, Agnès, Vallance, Jean, Chiaradia, Massimo, Fontboté, Lluìs (2006) Mineral zoning and gold occurrence in the Fortuna skarn mine, Nambija district, Ecuador. Mineralium Deposita, 41 (4) 301-321 doi:10.1007/s00126-006-0062-x | Journal (article/letter/editorial) | | development of Na-rich plagioclase, K-feldspar, epidote, actinolite, anhedral pyroxene, and titanite affects...dominant brown garnet skarn, a distal green pyroxene– epidote skarn, and two quartz-rich varieties, a blue-green...observed. It grades into a distal green pyroxene–epidote skarn zone to the North (Cuerpo 3). Granditic garnet...filling mineral is quartz, followed by Kfeldspar, epidote, calcite, and chlorite, with minor sericite, apatite...(1- to 20-wt% eq. NaCl) were trapped in garnet, epidote, and quartz, and are interpreted to be responsible |  | | Book | | Eastern-Central Alaska: An Overview and Update. Arne A Bakke, Robert P Morrell and John C O dden...............brown biotite, red garnet, silica/pyrite/sericite, epidote, and magnetite. Retrograde events consisted of...EAST-CENTRAL ALASKA: AN OVERVIEW AND UPDATE Ame Bakke, Robert P. Morrell,& John C, Odden Fairbanks Gold...of companies explored and developed Fort Knox. Bakke (1995) details the discovery and explora tion history...present as pendants near the schist-granite contact. Bakke (1995) provides whole-rock, trace elem ent and a |  | Wang, Liqiang, Tang, Juxing, Deng, Jun, Kang, Haoran, Lin, Xin, Cheng, Wenbin, Li, Zhuang, Zhang, Zhi (2015) The Longmala and Mengya’a skarn Pb–Zn deposits, Gangdese region, Tibet: evidence from U–Pb and Re–Os geochronology for formation during early India–Asia collision. International Geology Review, 57 (14) 1825-1842 doi:10.1080/00206814.2015.1029540 | Journal (article/letter/editorial) | | alteration minerals are garnet, diopside, actinolite, epidote, chlorite, phlogopite, quartz, and calcite. Based...number of hydrous minerals, such as actinolite, epidote, and chlorite (Figure 5d, e), with a small amount...present at this stage (Figure 5e). Actinolite and epidote are the major minerals at this stage, which replace...Actinolite usually occurs as radiated aggregation, and epidote and chlorite are fine-granular. (III) Magnetite-phlogopite...diopside, wollastonite, actinolite, tremolite, epidote, chlorite, muscovite, quartz, and calcite. The |  | Alaminia, Zohreh, Mehrabi, Behzad, Razavi, Seyed Mohammad Hossein, Tecce, Francesca (2020) Mineral chemistry, petrogenesis and evolution of the Ghorveh-Seranjic skarn, Northern Sanandaj Sirjan Zone, Iran. Mineralogy and Petrology, 114 (1) 15-38 doi:10.1007/s00710-019-00688-6 | Journal (article/letter/editorial) | | ±pyrrhotite; stage III, amphibole+vesuvianite+epidote+chlorite±quartz ±calcite±pyrrhotite±pyrite±chalcopyrite...pyrite and stage IV, quartz+calcite±amphibole±epidote±chlorite±pyrite±chalcopyrite. Scheelite occurs...consist of calcite± clinopyroxene± tremolite± epidote ± albite± opaque± titanite showing predominantly...= vesuvianite, Qz = quartz, Pl = plagioclase epidote and amphibole and 1 μm for clinopyroxene, garnet...garnet, clinopyroxene, vesuvianite, amphibole, epidote, quartz, and calcite together with scheelite, chlorite |  | | Journal (article/letter/editorial) | | metamorphic minerals such as chlorite, albite, and epidote. The hydrous minerals are interpreted to have formed...1988; Dalstra et al., 1999). Metamorphic chlorite, epidote, albite, quartz, pumpellyite, prehnite, and calcite...Biotite is partly replaced by chlorite-rutile-epidote aggregates, and plagioclase is partly 1234 ARCHEAN...terrane (Fig. 1). In this belt, retrograde chlorite-epidote assemblages overprint amphibolite facies greenstones...by turbid K feldspar, carbonate-prehnite, and epidote-chlorite aggregates (Fig. 9B). Much of the plagioclase |  | Wu, Huaying, Zhang, Lianchang, Wan, Bo, Chen, Zhiguang, Xiang, Peng, Pirajno, Franco, Du, Andao, Qu, Wenjun (2011) Re–Os and 40Ar/39Ar ages of the Jiguanshan porphyry Mo deposit, Xilamulun metallogenic belt, NE China, and constraints on mineralization events. Mineralium Deposita, 46 (2) 171-185 doi:10.1007/s00126-010-0320-9 | Journal (article/letter/editorial) | | quartz/molybdenite, pyrite Pr: chlorite, calcite, epidote/pyrite Epidote, quartz, chlorite, calcite, fluorite/magnetite...quartz/chalcopyrite, pyrite, molybdenite Pr: chlorite, epidote/pyrite K: K-feldspar, biotite, quartz/magnetite... Hart CJR, Rombach CS, Thompson JFH, Smith MT, Bakke AA, Goldfarb RJ (2002) Absolute timing of sulfide |  | Dressel, Bárbara Carolina, Chauvet, Alain, Trzaskos, Barbara, Biondi, João Carlos, Bruguier, Olivier, Monié, Patrick, Villanova, Sandro Notto, Newton, José Bazille (2018) The Passa Três lode gold deposit (Paraná State, Brazil): An example of structurally-controlled mineralisation formed during magmatic-hydrothermal transition and hosted within granite. Ore Geology Reviews, 102. 701-727 doi:10.1016/j.oregeorev.2018.09.007 | Journal (article/letter/editorial) | | comprise potassic alteration, phillic alteration, epidote alteration, saussuritisation, silicification, carbonation...in the Timbarra (Mustard, 2001) and Fort Knox (Bakke, 1995 in Mustard, 2001; McCoy et al., 1997 in Thompson...late fluid phases of crystallising intrusions (Bakke, 1995 in Mustard, 2001; McCoy et al., 1997 in Thompson...small intrusions, such as the Fort Knox deposit (Bakke, 1995 in Mustard, 2001). Small stocks allow the... Rombach, C.S., Thompson, J.F.H., Smith, M.T., Bakke, A.A., Goldfarb, R.J., 2002. Absolute timing of |  | Dusel-Bacon, Cynthia, Brosge, William Peters, Till, Alison B., Doyle, Elizabeth O., Mayfield, Charles F., Reiser, Hillard N., Miller, Thomas P. (1989) Distribution, facies, ages, and proposed tectonic associations of regionally metamorphosed rocks in northern Alaska. Professional Paper 1497a. US Geological Survey doi:10.3133/pp1497a | Report (issue) | | Where possible, the greenschist-facies and the epidote-amphibolite- and amphibolite-facies groups are...metaconglomerate local. ly contains abundant metamorphic epidote and chlorite, especially near faults where shearing...of several compositions: glaucophane+ garnet± epidote± stilpnomelane ±actinolite± chlorite± white mica±...actinolite, and sodic hornblende), chlorite, albite, epidote, sphene, magnetite, and pyrite (Gottschalk, 1987)...been reported, and the euhedral outline of some epidote group minerals included within garnet indicates |  | | Journal (article/letter/editorial) | | mineral assemblage (e.g. amphibole, diopside, epidote, andalusite, biotite) which are moderately aligned...penetrated by shear veins mineralized with Fe-enriched epidote (Fig. 5i). It is a facies type mostly found at...of a certain level of temperature of formation: epidote-clinozoisite s.s.s.: 400°C-530°C, diopside s.s...reflect a temperature drop from 670°C down to 400°C. Epidote is the marker mineral to fix the lower T limit...silicate minerals (e.g. wollastonite, diopside, epidote, andalusite….) and quartz thermometry) in the Hagendorf-Pleystein |  | Dusel-Bacon, Cynthia, Slack, John F., Aleinikoff, John N., Mortensen, James K. (2009) Mesozoic Magmatism and Base-Metal Mineralization in the Fortymile Mining District, Eastern Alaska - Initial Results of Petrographic, Geochemical, and Isotopic Studies in the Mount Veta Area. Professional Paper Vol. 1760 (1760a) US Geological Survey doi:10.3133/pp1760a | Report (issue) | | Several Early Jurassic plutons contain magmatic epidote, indicating emplacement of the host plutons at...Eva Creek Mitchell Diamond Mountain tuk ms M idd le ive r � R ly Hea see Mortensen and others...zircon U-Pb age of 196 ± 4 Ma, determined for an epidote-bearing biotite leucogranite from one of these...Prospect Syenite Dikes+Sills T: 185.4±1.4 te R Epidote Alteration Sy e ni Granite Plugs idg e Mount...taken with transmitted, cross-polarized light. A, Epidote-bearing granodiorite (sample 11, table 1, fig. |
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