 | | Journal (article/letter/editorial) | | Goettingen, Goldschmidtstrasse 1, D-37077 Goettingen, Germany ABSTRACT The Qinglongshan O- and H-isotope anomaly...olivine, clinopyroxene, orthopyroxene, biotite, epidote, omphacite, paragonite, kyanite, and rutile. The...CCSD-PPH1 drill core samples. Goettingen University, Germany. The analyses were performed at 15 kv, 12 na beam...the Geoscience Center, Goettingen University, Germany using an ultraviolet laser isotope microprobe system...OF UHP ROCKS spar, quartz, biotite, muscovite, epidote, and amphibole (with or without garnet). The orthogneiss |  | | Journal (article/letter/editorial) | | Morrison Distinguishing magmatic from subsolidus epidote: laser probe oxygen isotope compositions Received:...April 1996 / Accepted: 3 August 1996 Abstract Epidote occurs in four textural varieties in the Mount...the established textural criteria for magmatic epidote. Equant anhedral grains, which are ~5 mm in diameter...allanite cores are suggestive of a magmatic origin. Epidote intergrowths with hornblende and biotite also meet...against biotite. Finally, late-stage veins of epidote cross-cut all phases in the rock and are likely |  | | Journal (article/letter/editorial) | | Spicuzza Oxygen isotope compositions and magmatic epidote from two contrasting metaluminous granitoids, NE...zircon. There is a large and consistent quartz–epidote fractionation that gives apparent temperatures...temperatures for epidote. Oxygen isotope fractionation between natural zircon and magmatic epidote is opposite...predicted from theoretical determinations, as d18O (epidote) ...in epidote of 500 C and D(qtz–epi) 5.19 at 500 C. Introduction Interest in magmatic epidote in granitic |  | | Journal (article/letter/editorial) | | either BrF5 or F2 gas on crystals of almandine, epidote, forsterite, tourmaline, and zircon. Results for...UWG-2 Almandine USNM 107144 Zircon USNM R12984 Epidote USNM 126360 Forsterite USNM 136718 Forsterite Harvard...and using F2 gas reagent. Results for zircon and epidote using BrF5 and a CO2 laser for whole grain and...187206. Valley J. M., Kitchen N., Kohn M. J., Niendorf C. R., and Spicuzza M. J. ( 1995 ) UWG-2, a garnet |  | | Journal (article/letter/editorial) | | Universita«t Potsdam, Postfach 60 15 53, D-14415 Potsdam, Germany. 0012-821X / 01 / $ ^ see front matter ß 2001...gabbros and basalts (garnet, glaucophane, omphacite, epidote) re£ect the whole-rock stable isotope composition...phyllite; QV, quartz-epidote-chlorite vein. Minerals: Act, actinolite; Ep, epidote; Fld, feldspar; Hbl...metagabbroic blocks. The ND values of amphiboles and one epidote are given in Table 1 and plotted in Fig. 5. The...gabbros at 300 and 500³C [34]. 350x and the one epidote separate gave a value of 359x. Samples Ti 55, Ti |  | Li, Qiuli, Li, Shuguang, Zheng, Yong-Fei, Li, Huimin, Massonne, Hans Joachim, Wang, Qingchen (2003) A high precision U–Pb age of metamorphic rutile in coesite-bearing eclogite from the Dabie Mountains in central China: a new constraint on the cooling history. Chemical Geology, 200 (3) 255-265 doi:10.1016/s0009-2541(03)00194-3 | Journal (article/letter/editorial) | | Universität Stuttgart, Azenbergstr. 18, 70174 Stuttgart, Germany d Institute of Geology and Geophysics, Chinese...213.3 F 4.8 Ma) defined by garnet + biotite + epidote from granitic gneiss at Shuanghe suggests the Nd...isotopic re-equilibration within garnet, biotite and epidote during retrograde amphibolite facies metamorphism...phengite, Mon = monazite, Bi = biotite, Epid = epidote. Data sources: Li et al. (2000), Ayers et al. (2002)...– 1055. Valley, J.W., Kitchen, N., Kohn, M.J., Niendorf, C.R., Spicuzza, M.J., 1995. UWG-2, a garnet standard |  | Skelton, A. D. L., Valley, J. W., Graham, C. M., Bickle, M. J., Fallick, A. E. (2000) The correlation of reaction and isotope fronts and the mechanism of metamorphic fluid flow. Contributions to Mineralogy and Petrology, 138 (4) 364-375 doi:10.1007/s004100050569 | Journal (article/letter/editorial) | | sill margins by the reaction: 3 amphibole 2 epidote 8H2 O 10CO2 3 chlorite 10 calcite 21...subhedral crystals of actinolite, pale yellow granular epidote, subhedral albite and pale green chlorite. Minor...shown on both map and cross-section albite and epidote replacing plagioclase in a chlorite actinolite...constituents include epidote, and sphene or rutile. Actinolite is absent and epidote is rare or absent in...between randomly oriented (reactant) actinolite and epidote grains, suggests that ¯uid in®ltration and consequent |  | | Journal (article/letter/editorial) | | propylitic alteration CE P assemblage (i.e., epidote, sericite and carbonate) under polarized microscope...309-337. MA Valley, J., Kitchen, N., Kohn, M.J., Niendorf, C.R., Spicuzza, M., 1995. UWG-2, a garnet standard |  | Silva, Thyego R., Ferreira, Valderez P., Lima, Mariucha Maria C., Sial, Alcides N. (2016) Two stage mantle-derived granitic rocks and the onset of the Brasiliano orogeny: Evidence from Sr, Nd, and O isotopes. Lithos, 264. 189-200 doi:10.1016/j.lithos.2016.08.030 | Journal (article/letter/editorial) | | major accessory phases, and titanite and magmatic epidote as trace minerals. Major and trace element chemistry...are green amphibole, epidote, zircon, rare allanite, and opaque minerals. Epidote occurs as euhedral to...by biotite and plagioclase and, less commonly, epidote exhibits allanite cores (Fig. 3a-f), in a textural...from 209 to 500 ppm, possibly tied to allanite, epidote and titanite. Trace element distribution patterns...oxygen fugacity (Wones, 1989). Preserved magmatic epidote corresponds to crystallization at AC moderately |  | Ferreira, V.P., Sial, A.N., Pimentel, M.M., Armstrong, R., Spicuzza, M.J., Guimarães, I.P., da Silva Filho, A.F. (2011) Contrasting sources and P-T crystallization conditions of epidote-bearing granitic rocks, northeastern Brazil: O, Sr, and Nd isotopes. Lithos, 121 (1) 189-201 doi:10.1016/j.lithos.2010.11.002 | Journal (article/letter/editorial) | | sources and P-T crystallization conditions of epidote-bearing granitic rocks, northeastern Brazil: O...Available online 7 November 2010 Keywords: Magmatic epidote Nd isotopes Sr isotopes O isotopes SHRIMP U–Pb...magmatic epidote-bearing plutons that carry ferrohornblende, biotite, titanite, and epidote. Major, trace...residence time of lower crust amphibolites source. Epidote in the Curral de Cima pluton crystallized close...pressure. In contrast, in the Lourenço pluton epidote crystallized close to the HM buffer and Al-in-hornblende |  | Cheng, H., DuFrane, S. A., Vervoort, J. D., Nakamura, E., Zheng, Y.-F., Zhou, Z. (2010) Protracted oceanic subduction prior to continental subduction: New Lu-Hf and Sm-Nd geochronology of oceanic-type high-pressure eclogite in the western Dabie orogen. American Mineralogist, 95 (8) 1214-1223 doi:10.2138/am.2010.3307 | Journal (article/letter/editorial) | | transitional blueschist-greenschist in the south, through epidote-amphibolite and quartz eclogite, to coesite eclogite...ECLOGITE IN DABIE Greenschist-blueschist zone 1 km Epidote-albite amphibolite zone HP/UHP eclogite zone m...sampling was performed using a Geolas 2005 (MicroLas, Germany) system equipped with a 193 nm Arf-excimer laser...counts rates for Li and Sr (omphacite, amphibole, epidote, phengite), Zr (zircons), Ti (rutile, ilmenite...names: AM = amphibolite; BS = blueschist; EA = epidote amphibolite; GS = greenschist; HGR = high-pressure |  | Bojar, H.-P., Bojar, A.-V., Mogessie, A., Fritz, H., Thalhammer, O.A.R. (2001) Evolution of veins and sub-economic ore at Strassegg, Paleozoic of Graz, Eastern Alps, Austria: evidence for local fluid transport during metamorphism. Chemical Geology, 175 (3) 757-777 doi:10.1016/s0009-2541(00)00342-9 | Journal (article/letter/editorial) | | occurrences of massive amphibole–albite–chlorite–epidote rocks have been interpreted as withinplate alkali–basalts...evolution. The parageneses albite– actinolite–epidote–chlorite suggests high greenschist facies metamorphic...hornblende with plagioclase retrogressed to albite, epidote and chlorite. The diagnostic metamorphic assemblage...decomposition of Mg, Ca, Fe–silicates Žchlorite and epidote. by H 2 OrCO 2-bearing fluids. These reactions...schiefer-type mineralization in the Richelsdorf Hills, Germany, as deduced from stable isotope and organic gechemicals |  | | Journal (article/letter/editorial) | | Erlangen, Germany Institute of Geosciences, Universität Kiel, Ludewig-Meyn-Str. 10, 24118 Kiel, Germany a r...magnetite/ilmenite, 1% titanite, 10% secondary epidote and chlorite Gabbro, medium-grained adcumulate...and consist of plagioclase, quartz, hornblende, epidote, chlorite, titanite, Ti-magnetite, and ilmenite...gabbros, and considerable amounts of secondary epidote and chlorite formed by alteration of plagioclase...4855–4884. Valley, J.W., Kitchen, N., Kohn, M.J., Niendorf, C.R., Spicuzza, M.J., 1995. UWG-2, a garnet standard |  | Iles, Kieran A., Hergt, Janet M., Sircombe, Keith N., Woodhead, Jon D., Bodorkos, Simon, Williams, Ian S. (2015) Portrait of a reference material: Zircon production in the Middledale Gabbroic Diorite, Australia, and its implications for the TEMORA standard. Chemical Geology, 402. 140-152 doi:10.1016/j.chemgeo.2015.02.036 | Journal (article/letter/editorial) | | amphiboles such as cummingtonite), chlorite and epidote are late-stage deuteric alteration products of...hornblende, clinopyroxene, secondary amphibole, epidote and chlorite in different petrographic contexts...clinopyroxene, hornblende, cummingtonite, actinolite, epidote and chlorite (wider dataset and cation site allocations...with the spot analyses (Table 4). The analysed epidote grains also contain little Zr (from 0.3 μg/g in...some overlap with the compositions of amphiboles, epidote exhibits higher U content (0.36 + 1.1/− 0.16 μg/g) |  | Gong, Bing, Zheng, Yong-Fei, Wu, Yuan-Bao, Zhao, Zi-Fu, Gao, Tianshan, Tang, Jun, Chen, Ren-Xu, Fu, Bin, Liu, Xiaoming (2007) Geochronology and Stable Isotope Geochemistry of UHP Metamorphic Rocks at Taohang in the Sulu Orogen, East-Central China. International Geology Review, 49 (3) 259-286 doi:10.2747/0020-6814.49.3.259 | Journal (article/letter/editorial) | | plagioclase (An30) + K-feldspar + garnet ± muscovite ± epidote ± biotite ± titanite ± zircon ± magnetite. Mineral...plagioclase; Mus = muscovite; Tn = titanite; Ep = epidote; Omp (Jd40Di60) = omphacite; Gt = garnet; Zr =...values of –101 to –90‰ for muscovite and –62‰ for epidote, and muscovite from the eclogite has δD values...gneiss, magnetite has the lowest δD values whereas epidote and quartz have the highest δD values; muscovite...to 46,647 ppm for muscovite and 26,118 ppm for epidote. Despite the similar δD values (Fig. 5), garnet |  | | Journal (article/letter/editorial) | | Ludwig-Maximilians-Universität, Luisenstrasse 37, 80333 Munich, Germany M. Díaz Los Bonces Division, AngloAmerican Chile...Rieger (*) Abt-Williram-Str 86, 85560 Ebersberg, Germany e-mail: ARieger@lmu.de thermometric and stable...Tourmaline Scapolite Quartz White mica Apatite Allanite Epidote Chlorite Rutile Sphene Zeolite Calcite at deep...Laboratory of the GeoBio Center at the LMU, Munich, Germany (Table 2). Oxygen and carbon isotope compositions...Tectonophysics 299:93–109 Valley JW, Kitchen N, Kohn MJ, Niendorf CR, Spicuzza MJ (1995) UWG-2, a garnet standard |  | | Journal (article/letter/editorial) | | isotope compositions, and Sr isotope compositions of epidote grains from the RN-17 cuttings and RN-17B core...no correlation with depth. Sr isotope ratios in epidote grains measured by laser ablation MC-ICP-MS ranged...phases at shallow depths 35 within the well (e.g. epidote at 350 m) implies much higher pressures and temperatures...is present in some of the least altered rocks. Epidote occurs in veins, as well as in amygdale filings...within amygdales associated with chlorite and epidote. Amphibole ranges in composition from actinolite |  | | Journal (article/letter/editorial) | | brecciation, a high allanite content, and a large, epidote-rich enveloping alteration zone. The central zone...development of calc-silicate mineral (amphibole, epidote, allanite, calcite) infill. Comparison of bulk...accounted for by a large positive Eu anomaly in epidote from the alteration zones surrounding the ore breccias...apatitepoor kaolinitic zones, (3) apatite–allanite–epidote zones hosted in brecciated calc-silicate rocks...allanite content of the ore, and the broad quartz + epidote ± amphibole alteration envelope. This mineralisation |  | Rumble, Douglas, Giorgis, David, Ireland, Trevor, Zhang, Zeming, Xu, Huifen, Yui, T.F., Yang, Jingsui, Xu, Zhiqin, Liou, J.G. (2002) Low δ18O zircons, U-Pb dating, and the age of the Qinglongshan oxygen and hydrogen isotope anomaly near Donghai in Jiangsu Province, China. Geochimica et Cosmochimica Acta, 66 (12) 2299-2306 doi:10.1016/s0016-7037(02)00844-x | Journal (article/letter/editorial) | | microcline, quartz, and biotite with minor garnet, epidote– clinozoisite, magnetite, monazite, amphibole,...al. Valley J. W., Kitchen N. E., Kohn M. J., Niendorf C. R., and Spicuzza M. J. (1995) UWG-2, a garnet |  | | Journal (article/letter/editorial) | | 69 NM0b d18O‰ Zrc with HF a(S) sphene, (E ) epidote, (A) apatite, (H ) hornblende, (B) biotite, (G)...Zrc (ppm) with HF Zrc Sphene a(S) sphene, (E ) epidote, (A) apatite, (H ) hornblende, (B) biotite, (G)...115 152 136 DD81-29 106 a(S) sphene, ( E ) epidote, (A) apatite, (H ) hornblende, (B) biotite, (G)...(ppm) (wt%) (°C ) (ppm) U–Pb a(S) sphene, (E ) epidote, (A) apatite, (H ) hornblende, (B) biotite, (G)...NM1,M1 d18O‰ Zrc with HF a(S) sphene, ( E ) epidote, (A) apatite, (H ) hornblende, (B) biotite, (G) |  | | Journal (article/letter/editorial) | | whose δD is comparable to local hydrothermal epidote (−127 to −108‰), and show significantly lower water...and IDDP-1 glass, shown relative to geothermal epidote (green circles—Pope, 2011) and local groundwaters...geothermal regions, with mixed-layered clays, chlorite, epidote and actinolite forming at greater depths (Ármannsson...IDDP-1 glass (Elders et al., 2011), geothermal epidote from drillhole cuttings at Krafla (Pope, 2011),...measured in the IDDP-1 glass, and in hydrothermal epidote from drillhole cuttings (Figs. 3b and 4a). However |  | Li, Xu-Ping, Zheng, Yong-Fei, Wu, Yuan-Bao, Chen, Fukun, Gong, Bing, Li, Yi-Liang (2004) Low-T eclogite in the Dabie terrane of China: petrological and isotopic constraints on fluid activity and radiometric dating. Contributions to Mineralogy and Petrology, 148 (4) 443-470 doi:10.1007/s00410-004-0616-9 | Journal (article/letter/editorial) | | dilution techniques at the Univerity of Tuebingen, Germany. Mineral powders were completely decomposed in...quartz, biotite, plagioclase, sometimes garnet, epidote group minerals, apatite and rare magnetite. The...field including blueschist, amphibolite eclogite, epidote eclogite, lawsonite eclogite and dry eclogite are...therefore, well represents the retrograde stage from epidote eclogite to amphibole eclogite. The average P–T...Rutile Quartz Paragonite Omphacite Garnet Zoisite Epidote Rutile Quartz Paragonite Omphacite Garnet Rutile |  | | Journal (article/letter/editorial) | | Barcroft specimens chosen for analytical study. Epidote occurs as anhedral granules in the matrix, and...aplites K–feldspar Quartz Plagioclase Hornblende Epidote Biotite Muscovite Chlorite Opaques Titanite Total...Mineral 43:365–4413 Valley JW, Kitchen N, Kohn MJ, Niendorf CR, Spicuzza MJ (1995) UWG-2, a garnet standard |  | ZHAO, Z-F., CHEN, B., ZHENG, Y-F., CHEN, R-X., WU, Y-B. (2007) Mineral oxygen isotope and hydroxyl content changes in ultrahigh-pressure eclogite?gneiss contacts from Chinese Continental Scientific Drilling Project cores. Journal of Metamorphic Geology, 25 (2) 165-186 doi:10.1111/j.1525-1314.2007.00693.x | Journal (article/letter/editorial) | | contains garnet, quartz, plagioclase, biotite, epidote, ilmenite, rutile and titanite. Ilmenite is rimmed...amphibole, Bt ¼ biotite, Pl ¼ plagioclase, Ep ¼ epidote, Ms ¼ muscovite. 2007 Blackwell Publishing Ltd...mainly consists of quartz, plagioclase, garnet, epidote, biotite and amphibole, with minor apatite, rutile...amphibole, quartz, garnet, plagioclase, apatite, epidote and biotite. Abundant symplectite after the primary...quartz, )2.7 to )1.9& for garnet, )2.6 to )2.0& for epidote and )3.6 to )2.6& for biotite, whereas those from |  | | Journal (article/letter/editorial) | | indicates that kyanite, staurolite, chloritoid, and epidote should be quite refractory (Tc;Dodson above peak... B Compositions of magnetite, rutile, garnet, epidote, glaucophane and phengitic muscovite vs coexisting...Fractionations for the speci®c chemical compositions of epidote, garnet, and muscovite have not been 5‰ 1. bl...empirical and theoretical data for garnet and epidote (Smyth and Clayton 1988; Smyth 1989; Kohn and Valley...evaluation of isotopic equilibrium among muscovite, epidote, and garnet from Sifnos and Ward Creek is complicated |
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