 | | Journal (article/letter/editorial) |
| Springer-Verlag 1992 Printed in Austria Phyllonite Formation and Alteration of Gneisses in Shear Zones (Gleinalmkristallin...(Gleinalmkristallin, Eastern Alps/Austria)* W. Prochaska 1, A. Bechtel 2, and U. K16tzli 3 Institut fiJr Geowissenschaften...Geowissenschaften, Montanuniversitfit Leoben, Austria 2 Mineralogisch-Petrologisches Institut der Universit~it...accepted March 10, 1992 Summary The leucophyllite (quartz-muscovite-chlorite-phyllonites) deposit WeiBkirchen...paragenesis (quartz-muscovitegarnet) yielded temperatures in the range from 623 to 642 °C which is interpreted |
 | | Journal (article/letter/editorial) |
| dating of Alpine metamorphism and basement exhumation in the Sopron Mts. (Eastern Alps, Hungary): thermochronology...Alpine overprint has an extreme spatial variation. In several metamorphic slices Variscan mineral assemblages...the peak of Alpine metamorphism in the Sopron Mountains, but muscovite and biotite do not show complete...temperatures (around 550 C) for Ar in muscovite and biotite in a dry metamorphic environment, or which...Austroalpine units in the overview map: S Saualpe; K Koralpe; W Wechsel; G Gleinalm; localities in the Sopron |
 | Nagy, Géza, Draganits, Erich, Demény, Attila, Pantó, György, Árkai, Péter (2002) Genesis and transformations of monazite, florencite and rhabdophane during medium grade metamorphism: examples from the Sopron Hills, Eastern Alps. Chemical Geology, 191 (1) 25-46 doi:10.1016/s0009-2541(02)00147-x | Journal (article/letter/editorial) |
| Universität Wien, Althanstrasse 14, A-1090 Vienna, Austria Abstract Electron microprobe studies on the age...accessory LREE-phosphate minerals have been carried out in medium-grade metamorphic rocks of the Sopron Hills...types. A first generation of monazite was formed in mica schists during the pre-Alpine, Hercynian metamorphism...supported by Th – U – total Pb ages of ca. 300 Ma. In orthogneisses, monazite is rare and of igneous origin...75 Ma. Pronounced negative Eu anomalies were found in the igneous monazites (Eu/Eu * < 0.35), while most |
 | Chen, Yi-Xiang, Demény, Attila, Schertl, Hans-Peter, Zheng, Yong-Fei, Huang, Fang, Zhou, Kun, Jin, Qi-Zhen, Xia, Xiao-Ping (2020) Tracing subduction zone fluids with distinct Mg isotope compositions: Insights from high-pressure metasomatic rocks (leucophyllites) from the Eastern Alps. Geochimica et Cosmochimica Acta, 271. 154-178 doi:10.1016/j.gca.2019.12.025 | Journal (article/letter/editorial) |
| org/10.1016/j.gca.2019.12.025 GCA 11572 To appear in: Geochimica et Cosmochimica Acta Received Date:...copyediting, typesetting and review before it is published in its final form, but we are providing this version...Hefei 230026, China 2. CAS Center for Excellence in Comparative Planetology, University of Science and...a crucial role in element mobility and mass transfer at the slab-mantle interface in subduction zones...composed of quartz, muscovite/phengite and Mg-chlorite, occur in several localities in the Eastern Alps |
 | | Journal (article/letter/editorial) |
| within the southern Dora-Maira Massif is presented, in order to establish the nature of the different protoliths...retrograde derivative are enriched in Mg and strongly depleted in Na, Ca, Fe, Cu, P, Rb, Ba, and Sr with...contents of the different phengite schists included in the ‘‘pyrope quartzite’’ confirm their close overall...quartzite’’, in general differ by having lower contents in K, Mg, Rb, and higher contents in Na, Fe, Ca...quartzite’’, UHP, metasomatism, whiteschist. Introduction In contrast to the extensive petrological and geochronological |
 | | Journal (article/letter/editorial) |
| Stuttgart, Dezember 2001 Multiple fluid migration events in the Sopron Gneisses during the Alpine high-pressure...Török, K. (2001): Multiple fluid migration events in the Sopron Gneisses during the Alpine high-pressure...of the orthogneisses and associated leucophyllites in the Sopron area on the basis of mineral chemistry...eq. wt.%) NaCl-dominated primary fluid inclusions in the core of the albite grains which coexist with...primary fluid inclusions are present in quartz grains enclosed in K – feldspar (salinity between 10.2 |
 | | Journal (article/letter/editorial) |
| Hungary contains Mg-chlorite-muscovite-quartzphyllites (leucophyllite) and Mg-chlorite-bearing kyanite...leucophyllites took place in shear zones and was associated with depletion in alkalies and iron and enrichment...igneous muscovites of leucophyllites and changes in the whole rock chemical compositions suggest Mg-metasomatism...dispersion in isocon plots with Mg-enrichment even in sheared gneiss not in contact with leucophyllite. The...responsible for the formation of high pressure whiteschists in the Central and Western Alps. The geochemical characteristics |
 | | Journal (article/letter/editorial) |
| Institutes der Ungarisehen Akademie der Wissenschaften in Sopron, Ungarn Uber die Genese der ,,Leukophyllite"..."Leucophyllites" Up till now quartz-muscovite schists and quartz-muscovite-leuehtenbergite schists with or...and kyanite-leuehtenbergite quartzites and occur in small zones of strong tectonic deformation. The question...these rocks was studied in the light of experimental datas. The formation of muscovite from potassium feldspar...formation of a talcum deposit. The temperature of leucophyllite formation is estimated to 550~ corresponding |
 | | Journal (article/letter/editorial) |
| that of muscovite, KA12 (A1Sia)O10(OH)2,and that of the equivalent high-silica mica leucophyllite, KAIMg...KAIMg (Si4)O10(0H)2. The series muscovite-leucophyl]ite includes the named micas phengite (high-silica sericite)...straight compositional variation line from muscovite to leucophyllite. It is shown diagrammatica]ly that the...species names in this series to be retained are those of the end members muscovite and leucophyllite. Their...n y uscovites, the difference in the two minerals being essentially in the state of physical aggregation |
 | | Journal (article/letter/editorial) |
| – biotite – muscovite – plagioclase – quartz and crosscutting gneiss veins were studied in the Sopron...quartz assemblage at about 550 – 600 ƒC. This is in good agreement with the peak pressures obtained from...of the Alpine metamorphism were studied recently in the massive orthogneisses of the study area (Török...the garnet-bearing chlorite – muscovite ± biotite – quartz schists in the Austrian part of the Sopron-area...whether the high-pressure Alpine metamorphism observed in the massive orthogneisses of this area (Török 1996 |
 | | Journal (article/letter/editorial) |
| clay mineral deposits and phyllosilicate ore guides in Central Europe - A function of geodynamics and climate...1016/j.oregeorev.2019.103304 OREGEO 103304 To appear in: Ore Geology Reviews Received Date: Revised Date:...clay mineral deposits and phyllosilicate ore guides in Central Europe - A function of geodynamics and climate...copyediting, typesetting and review before it is published in its final form, but we are providing this version...clay mineral deposits and phyllosilicate ore guides in Central Europe - A function of geodynamics and climate |
 | | Journal (article/letter/editorial) |
| THE NATURE OF STRUCTURE-BONDED H2O IN ILLITE AND LEUCOPHYLLITE FROM DEHYDRATION AND DEHYDROXYLATION...samples of illite-1M, illite-2M2 and leucophyllite-1M. Samples were heated in a helium atmosphere at different...given temperature were cooled to 35ºC. Each cycle in the mass 18 spectrum of each illite sample contains...related to dehydration when H2O molecules located in K-free sites of the illite interlayers are removed...Two distinct features are characteristic of leucophyllite during heating-cooling treatments. First, the |
 | | Journal (article/letter/editorial) |
| REE distribution, mobilization and fractionation in the coesite-bearing ‘pyrope quartzite’ and related...were performed on leucophyllite from the Eastern Alps that had formed along shear zones in granite gneiss...their retrograde products are distinctly depleted in heavy REEs (HREEs). The REE distribution patterns... whereas the ‘pyrope quartzite’ shows variations in total REE contents. Nevertheless, all ‘pyrope quartzite’...mobilized and were partly removed. As a result, the HREEs in these altered rocks are depleted. Monazite shows |
 | | Journal (article/letter/editorial) |
| interpretation of dioctahedral mica infrared (IR) spectra in the OR stretching vibration region is proposed, It...for the observed sequence of the OR frequencies, In terms of this model, the simple analytical dependence...the interaction between octahedral Al and OR groups in the mica structures is assumed. Integrated optical...order-disorder of isomorphous cation distribution in mica structures, The essential result obtained by...mica IR spectra is the determination of Fe H cations in the tetrahedral sites of some samples. This means |
 | Moine, Bernard, Fortune, Jean Pol, Moreau, Philippe, Viguier, Francis (1989) Comparative mineralogy, geochemistry, and conditions of formation of two metasomatic talc and chlorite deposits; Trimouns (Pyrenees, France) and Rabenwald (Eastern Alps, Austria) Economic Geology, 84 (5) 1398-1416 doi:10.2113/gsecongeo.84.5.1398 | Journal (article/letter/editorial) |
| Deposits:Trimouns (Pyrenees,France) and Rabenwald(EasternAlps, Austria) BERNARDMOINE, JEAN POL FORTUNE, Laboratoirede...sedimentaryorigin. They were producedby metasomatism in zonesof intensedeformation (thrustplanes,surfaces...mineralchemicalcomposition(chlorites, phengites) in the variousmetasomatic zonesdemonstrates a nearattainmentof...rocks(micaschists,gneisses, and associated felsicigneousrocks).In the latter case,largequantitiesof Mg are addedwhile...showsvery typical solutionswith similarcompositions in both deposits--highsalinitywith halite often presentat |
 | | Journal (article/letter/editorial) |
| (1968) X-ray Powder Data for Mg-A1-Celadonite (Leucophyllite) from Barcza, Poland F. SEIFERT Institut fiir...increase both b0 and co sin ft. The members of the muscovite-phengite-celadonite group of mica minerals have...Eg~ST, 1963). Therefore, x-ray powder data are given in the following for a natural mineral which approaches...Mg-Al-celadonite, which is also caned leucophyllite. In addition to muscovite, KAI~[A1Sia010] (OH)2 , the two...Mg-Al-eeladonite (leucophyllite), KMgAI[SidO10](OH)2 , which are linked to muscovite by the substitutions |
 | | Journal (article/letter/editorial) |
| Comments on the paper “Multiple fluid migration events in the Sopron Gneisses during the Alpine high-pressure...Comments on the paper „Multiple fluid migration events in the Sopron Gneisses during the Alpine high-pressure...chronological model of metamorphic and metasomatic changes in the gneiss – micaschist complex at the eastern end...results obtained recently are in contradiction with his proposed model. In the followings we list the major...major fields where we encountered problems in the paper of Török (2001). 1) Geothermometry. The paper |
 | | Journal (article/letter/editorial) |
| STUDIES IN THE MICA GROUP; POLYMORPHISM AMONG THE HIGH-SILICA SERICITES E. Wu. HnrNnrcn aNn A. A. LnvrwsoN...polymorphs have been found intimately associated and have in some specimens formed within the same mica sheet...(1950), in interpreting the chemical composition of the highsilica sericites, places them in the mus...muscovite-leucophyllite series and demonstrates that they also contain important amounts of a divalent element...usually magnesium. Varieties placed by Schaller (1950) in this seriesinclude phengite, mariposite and alurgite |
 | | Journal (article/letter/editorial) |
| Tennessee 37830 rjlauf@msn.com Figure 2. Golden muscovite crystals, to 3 cm, on albite, Galileia, Brazil...Zussman 1962) described nine “common species”: muscovite, paragonite, glauconite, phlogopite, biotite,...relationships. Their recommendations also appear in abbreviated form in the eighth edition of Fleischer’s Glossary...(less often) O, Cl, or S. Figure 1. Twinned muscovite (“star mica”) crystals to about 3 cm; Riacho Genipapo...Gerais, Brazil. All photos by the author of specimens in his collection he micas are a group of about forty |
 | | Journal (article/letter/editorial) |
| 115-124, 1984. SOLUBILITY MEASUREMENTS OF PHASES IN THREE ILLITES 1 J. A. KITTRICK Department of Agronomy...Beavers Bend, and Fithian illites were equilibrated in the presence ofgoethite (or hematite) at room temperature...illites contain two or more phases or components in equilibrium with each other. Statistical and graphical...components, but that muscovite, leucophyllite, phlogopite, and talc are not. A muscovite-like phase, of lower...lower K content than muscovite, fit one pK expression well, but failed on two others. Key Words--Equilibration |
 | | Journal (article/letter/editorial) |
| differing in their chemical compositions has been studied by infrared (IR) spectroscopy in the OR stretching...vibration region. Decomposition of the IR spectra in the individual OH bands has provided unambiguous...pyrophyJlite-like structural environments in samples having a deficiency of K in interlayers has been established...compositions differ in their fine structural features, and in particular, isomorphous cations in octahedra and...distribution patterns in terms of short- and long-range ordering is one of the main problems in determination |
 | | Journal (article/letter/editorial) |
| 1989 High-Pressure Metamorphism in Gneisses and Pelitic Schists in the East Rhodope Zone (N. Greece)...facies conditions. The high P/T mineral paragenesis in the orthogneisses is: quartz + albite + microcline...phengite ( S i m a x : 7 atoms p.f.u.) + biotite and in the high alumina metapelites: garnet + chloritoid...are grown at the expense of chloritoid in metapelites, while in the orthogneisses oligoelase, still coexisting...coexisting with albite, is formed; in both rock types the Si content of white K-mica decreases considerably |
 | | Journal (article/letter/editorial) |
| MINERALOGICALNOTES III4 The coarsekaolinite layer was found in sevenaugerholesnear the surface. No actual outcrops...material is prone to rapid erosion.The few wells drilled in recent years down the dip report a white talc-like...espacing (B'ailey, 1963),but other lines are not in agreement. Chemical composition of the purified kaolinite...and muscoviteinclusions;mostof the iron oxide is in the form of iron oxide stains. DTA thermogramsof...Scnnnven, Mineral'ogisches U niaersitiil Kiel, Germanry In the course of a more extensiveexperimental study |
 | Spránitz, T., Józsa, S., Kovács, Z., Váczi, B., Török, K. (2018) Magmatic and metamorphic evolution of tourmaline-rich rocks of the Sopron area, Eastern Alps. Journal of GEOsciences, 63 (2) 175-191 | Journal (article/letter/editorial) |
| orthogneisses, tourmalinites, kyanite–chlorite–muscovite schists and quartzites crosscut by subordinate... plagioclase, tourmaline, garnet and white mica. In smaller amounts K-feldspar, beryl, Mg-rich chlorite...(Fe-rich and Mg-rich) were distinguished. Tourmaline in tourmalinites is generally large (several cm), deformed...also present in the tourmalinites. Deformed tourmaline–quartz bands and veins occur in kyanite–chlorite–muscovite...kyanite–chlorite–muscovite schists and quartzites. Euhedral, zoned and deformed schorl–dravite is accompanied with |
 | | Journal (article/letter/editorial) |
| 1996 Copyright 0 1996 Elsevier Science Ltd Printed in the USA. All rights reserved 0016-7037/96 $15.00...%)00241-4 The stability and composition of phengitic muscovite and associated phases from 5.5 to 11 GPa: Implications...accepted in revised form July 2, 1996) Abstract-The stability and composition of phengitic muscovite was...investigated from 5.5-11 GPa, 7CKL 1150°C in synthesis experiments performed in a multianvil apparatus. Starting...intermediate dioctahedraltrioctahedral mica. Phengitic muscovite was found to be stable from 5.5-11 GPa at 900°C |
