 | | Journal (article/letter/editorial) | | Petr. Jcon. Geol. 80, 515-525, 1985 Margarite-paragonite-muscovite low-grade metapelites aureole, Kitakami... Northeast Japan, coexisting with muscovite, paragonite, chlorite and quartz, but without carbonates...+quartz. The solubility of muscovite component in paragonite in the three white micas is suppressed as compared...compared to that in the muscovite-paragonite assem blage, whereas the paragonite solubility in muscovite of...similar to that of the two-phase assemblage. Paragonite component in margarite in three-phase assem blage |  | | Journal (article/letter/editorial) | | 1979 Experimental Determination of the Reaction Paragonite = Jadeite + Kyanite + H20, and Internally Consistent...stability of paragonite in the temperature range 550-740 ~ C. The reaction NaA13SiaOx o(OH)2 paragonite = NaA1Si20...brackets are thermodynamically consistent with the lower pressure reversals of Chatterjee (1970, 1972), and...jadeite, albite, chloritoid, and almandine with paragonite have been calculated using thermodynamic data...Introduction The stability relations of paragonite and of paragonite with quartz have been studied recently |  | | Journal (article/letter/editorial) | | association with amphibolites, marbles and accompanying graphite gneisses. Fine-grained garnets contain (mol. %)...Novosedly Šebanov lda 20 km Český Krumlov Austria Mo N ath oli th České Budějovice Fig. 1...abundant layers of marble, calc-silicate gneiss, graphite gneiss, quartzite and amphibolite in addition...co-ordinates is given in Tab. 1. 3.1. Pacova hora quarry near Chýnov The Moldanubian Zone is a heterogeneous...1995) and the Mesoproterozoic Dobra gneiss in Lower Austria (Gebauer and Friedl 1994; Friedl et al. 2004) |  | | Journal (article/letter/editorial) | | + pyrite + graphite, with many samples containing albite, mixed layer muscovite/paragonite, and/or calcite...Ufford and Cloos, 2005). Widespread emergence of land and deep erosional unroofing started at about 12...higher areas in the south, and mafic rocks in the lower areas to the north (Dow et al., 1988, p. 122). Rare...mineral assemblage is quartz + sericite + chlorite + graphite, with accessory albite, zoisiteepidote and calcite...mineral assemblage quartz + muscovite + chlorite + graphite. They concluded (p. 162) that the most widespread |  | | Journal (article/letter/editorial) | | ABSTRACT New single-grain-fusion muscovite and paragonite 40Ar ⁄ 39Ar data from eclogite and blueschist...infra-red laserprobe 40Ar ⁄ 39Ar muscovite and paragonite dates from different lithotectonic units within...39Ar ages yielded by individual muscovite and paragonite grains from rocks of varying composition, preservation...AND SAMPLES The Tauern Window in south-central Austria exposes the metamorphosed remnants of the European...we distinguish here only between muscovite and paragonite, even though in many samples, the K-rich white |  | | Journal (article/letter/editorial) | | The assemblage hornblende+ white mica occurs in graphite-free schists at two localities in the southwest... but that hbl + white mica remained stable in graphite-free layers. Calculation of the equilibrium constants...Furtschaglschiefer series (southwestern Tauern Window, Austria and Italy). A characteristic feature of the nongraphitic...coexistence of hornblende with either muscovite or paragonite (Selverstone et al. 1984). In the interlayered...Paleozoic Lower Schieferhiille, including the Furtschaglschiefer (Furt) ; dots Mesozoic Lower Schieferhiille; |  | Krivovichev, Vladimir G., Kuksa, Katherine A., Sokolov, Pavel B., Marakhovskaya, Olga Yu., Zolotarev, Andrey A., Bocharov, Vladimir N., Semenova, Tatyana F., Klimacheva, Maria E., Gussiås, Geir Atle (2022) Preiswerkite: A First Occurrence in Marble Hosting Gem Spinel Deposits, Luc Yen, Vietnam. Minerals, 12 (8) 1024 doi:10.3390/min12081024 | Journal (article/letter/editorial) | | marble-hosted noble spinel deposits of the Luc Yen district, northern Vietnam. It is found in marble for the...spectrum; noble spinel; marblehosted deposits; Luc Yen district; Vietnam Academic Editor: Paola Bonazzi Received:...Saualpe, Austria [22];La Rio La Palmilla, Guatemala [23];Dabie the Dabie metamorphic Saualpe, Austria [22];...phlogopite, sadanagaite, phlogopite, aspyrrhotite, graphite and dravite. Thus, these minerals indicate that...pyrite, pyrrhotite, graphite and dravite. Thus, these minerals indicate that minLuc district in occurred only |  | | Journal (article/letter/editorial) | | schist contain Mg-glaucophane + paragonite + kyanite + garnet + talc + graphite + rutile + quartz. The coexistence...belt. The metasedimentary association consists of graphite– garnet–mica schist, quartzite, marble, and quartzo-feldspathic...aluminous. Many of the host schists have abundant graphite, rutile as well as other accessory minerals which...pyrite and chalcopyrite. In some pelitic layers, graphite is concentrated in 0·5–3 cm long ‘fish-like’ structures...knockers in Choronı́ has the assemblage chloritoid–paragonite–garnet–quartz–muscovite– chlorite. The chloritoid |  | | Journal (article/letter/editorial) | | University of Vienna, Althanstrasse 14, A-1090 Wien, Austria Institut für Mineralogie und Petrographie, University...University of Innsbruck, Innrain 52, A-6020 Innsbruck, Austria a r t i c l e i n f o Article history: Received...muscovite, minor paragonite, biotite, chlorite, and accessory rutile, ilmenite, graphite, apatite, monazite...Epitaxial intergrowth of matrix staurolite + kyanite. graphite and ilmenite inclusions are concentrated along...microspectrometry), quartz, staurolite, muscovite, graphite, rutile and zircon. Garnet I commonly contains |  | | Journal (article/letter/editorial) | | assemblage titanite + rutile + calcite + quartz + graphite buffered the composition of the C-O-H fluid present...in a rock containing the buffer assemblage and paragonite, albite, phengite, epidote, and chlorite. The...of two main lithological sequences (Fig. 1). The lower one, probably prePermian, is composed of graphitic...garnet, muscovite, paragonite, phlogopite and quartz, with apatite, chalcopyrite, graphite, pyrite, titanite...replacing epidote, garnet, and amphibole. 4. Paragonite forms fine-grained aggregates, frequently intergrown |  | | Journal (article/letter/editorial) | | University of Innsbruck, Innrain 52, A-6020 Innsbruck, Austria CHRISTOPH HAUZENBERGER Department of Earth Sciences...University of Graz, Universitätsplatz 2, A-8010 Graz, Austria THOMAS LUDWIG Institute of Earth Sciences, Heidelberg...University of Innsbruck, Innrain 52, A-6020 Innsbruck, Austria ABSTRACT Staurolite was found in two granitic...concordant veins with quartz þ albite þ muscovite þ paragonite as major phases along with minor garnet þ beryl...garnetbiotite-muscovite-plagioclase gneisses with accessory paragonite 6 staurolite 6 kyanite. The pegmatite staurolites |  | | Journal (article/letter/editorial) | | with pseudothuringite. Mg-rich chlorite (Kalwang, Austria), vein deposit. Chemical analysis gives the formula...agreement with this value. Staurolite (Hiittenberg, Austria), from medium-grade pelitic rocks. A partial chemical...intersection has been shown in Fig. 2 at somewhat lower temperatures than those given by ALTHAUS (1966)...Figs. 6 and 7 resp. ALBEE, 1965). chlorite + paragonite + quartz = chloritoid-~ albite + vapor Petrographical...actinolite; Ct chloritoid; S staurolite; P a paragonite; B biotite; G garnet; Cd cordierite; M muscovite; |  | | Report (chapter) | | make further progress in the thermobarometry of lower grade metamorphic rocks. Thermodynamic mixing models...T ( K ) , which can be extrapolated linearly to lower T only if InKv is also a linear function of lIT...Extrapolation of any KD thermometer to temperatures lower than the measured a - X data may yield serious errors...reversals unless this contribution is removed (paragonite, Holland (1979a); margarite, Perkins et al. (1980);...applicable to many metapelitic rocks is that involving paragonite and muscovite, even though the miscibility limit |  | | Journal (article/letter/editorial) | | und Petrologie, Universität Graz, A-8010 Graz, Austria (alexander.proyer@uni-graz.at) ABSTRACT A petrogenetic...of this point terminate the stability range of paragonite, which breaks down to form staurolite or kyanite...growth of albitic plagioclase by decomposition of paragonite via continuous reactions may be conspicuous already...but may contain a number of sodic phases, like paragonite, glaucophane or jadeite. However, the mutual...kyanite, andalusite, sillimanite, OH-topaz, albite, paragonite, jadeite, chlorite, chloritoid, carpholite, talc |  | | Journal (article/letter/editorial) | | eclogite-facies mica schists from the Tauern Window, Austria, and 46 kb and 850~ for eclogite-facies biotite...equilibria involving these phases to distinguish between lower temperature blueschists and higher temperature eclogites...pistons and used furnace assemblies made of NaC1 and graphite (Bohlen 1984). Pressures were calibrated against...metastable because of the instability of anorthite at lower pressures via the reactions 2Ca2A13Si3012(OH) +...1979). The Krogh (1988) expression gives slightly lower values of 15.7 kb and 745 ~C. Sanders (1988) gave |  | | Journal (article/letter/editorial) | | analysis of margarite, a considerableamount of the paragonite end-member is Dresentin solid solution (-28.4...percentof pyrrhotite and severalmodal percent of graphite. The stratified rocks of northwestern Maine have...metamorphosed to various grades during the Acadian event in Lower Devonian time, e.g., Guido t t i ( 1 9 7 0 ) ,B...of the pseudomorph. Only minor quartz and the graphite of the original chiastoliteare presentas additional...data: quartz 50Vo, muscovite 33Vo,chlorite 5vo, graphite 3Eo,pyrrhotite 8Vo,and rutile l%o.Muscovite and |  | LÜ, Z., ZHANG, L., DU, J., BUCHER, K. (2009) Petrology of coesite-bearing eclogite from Habutengsu Valley, western Tianshan, NW China and its tectonometamorphic implication. Journal of Metamorphic Geology, 27 (9) 773-787 doi:10.1111/j.1525-1314.2009.00845.x | Journal (article/letter/editorial) | | composed of porphyroblastic garnet, omphacite, paragonite, glaucophane and barroisite, minor amounts of...of rutile and dotted (or banded) graphite. In addition to coesite and quartz, the zoned porphyroblastic...calcite, albite, chlorite, rutile, ilmenite and graphite. Multi-phase inclusions (e.g. Czo + Pg ± Qtz,...Triassic (230–220 Ma) (Zhang et al., 2007). In the lower part of Habutengsu river valley in western Tianshan...⁄ or glaucophane), epidote (or clinozoisite), paragonite (and ⁄ or phengite), quartz and rutile. The occurrence |  | | Journal (article/letter/editorial) | | minerals include tourmaline, apatite, rutile, graphite, retrograde albite and magnetite. Quartz and white...Only one out of 10 analysed samples contained paragonite closely associated with phengite, similar to...Garnet Rutile Titanite Opaque Tourmaline Apatite Graphite Chlorite Oxy-chlorite Albite Ankerite 19 58ph...45 – – 2 tr – – – – – – – ph, phengite; pa, paragonite; ta, talc; py, pyrite; ilm, ilmenite; mag, magnetite;...(4892 A) contains stably coexisting paragonite and phengite. Paragonite is close to the endmember composition |  | | Journal (article/letter/editorial) | | Austroalpine basement units east of the Tauern Window (Austria) S. W. Faryad1;2 and G. Hoinkes1 1 2 Institute...and Petrology, Karl-Franzens-University, Graz, Austria Department of Geology and Mineralogy, Technical...units that are tectonically subdivided into the Lower, Middle and Upper Austroalpine units (Fig. 1B) (Tollmann...and Frank, 1999): the upper Rappold Unit and the lower W olz Unit. Both units contain micaschists, marbles...of inclusions or opaque minerals (ilmenite and graphite) along their boundaries. Garnet (I) contains quartz |  | | Journal (article/letter/editorial) | | N A L P A P E R P. Tropper Æ C. E. Manning Paragonite stability at 700C in the presence of H2O–NaCl...piston-cylinder experiments on the equilibrium paragonite = jadeite + kyanite + H2O at 700C, 1.5–2.5 GPa...in the presence of H2O-NaCl fluids. Synthetic paragonite and jadeite and natural kyanite were used as...1979). Lowering X(H2O) decreases the pressure of paragonite breakdown to 2.10–2.20 GPa at X(H2O)=0.90 and...This constrains the position of the isothermal paragonite–jadeite–kyanite– albite–corundum–H2O invariant |  | | Journal (article/letter/editorial) | | Schuster Geological Survey of Austria, Neulinggasse 38, 1031 Vienna, Austria F. Gaidies (&) Department of...Cretaceous. The Wölz Complex was part of the tectonic lower plate and experienced a greenschist to amphibolite...applied to monomineralic inclusions of margarite, paragonite, and muscovite in the Permian growth phase of...(Schuster and Frank 1999) yielded T conditions of lower greenschist facies at low P (Schuster et al. 2001)...model intragranular diffusion in garnet. Small graphite inclusions are very abundant in the garnet porphyroblast |  | | Journal (article/letter/editorial) | | Tauern Window (Eastern Alps, northeast Italywestern Austria) F. VON BLANCKENBURG hand G. MORTEANI 2 ~lnstitut...Window (Eastern Alps, northeast Italy-western Austria). Lithos, 23:163-177. A detailed microscopic study...garbenschists are the most spectacular rocks o f the Lower Schieferhfille o f the western T a u e r n W i n...Greinerschieferserie as defined by Christa (1931) belongs to the Lower Schieferhtille (LSH; Untere Schieferhiille) of the...the Tauern Window. The Tauern Window of western Austria and northeast Italy is a tectonic window in which |  | | Journal (article/letter/editorial) | | ado Petrology © Springer-Verlag 1997 Printed in Austria Contrasting Eoalpine P-T evolutions in the southern...Mineralogy-Crystallography and Petrology, University of Graz, Austria With 7 Figures Received July 10, 1996, accepted...+ chlorite + muscovite ÷ paragonite ÷ quartz ÷ rutile 4ilmenite + graphite. Garnet I usually occurs as...rutile and graphite; matrix phases: paragonite/muscovite (pm), staurolite I/II and graphite pigment (grp);...4). The metapelites of the PKU contain abundant graphite. This implies that the metamorphic fluid contained |  | | Book | | derives its name from the saltmining district of Hallstatt in Upper Austria, where many prehistoric finds have...below. South Africa. Below right Coarsely foliated graphite. Rap;edara, Cevlon. PLATE 1 C '9 1 Orthorhombic...of these fourfold axes in all. The considerably lower symmetry of a monoclinic crystal is shown in Fig...crystallographic symmetry of a body may often be lower than its apparent geometric symmetry. In a pyrite...symmetr:y ar:e no longer: present (Fig. 16a, p. 93). A lower: cr:ystallogr:aphic symmetr:y is often only shown |  | | Journal (article/letter/editorial) | | Eclogite zone of the Hohe Tauern, Eastern Alps, Austria Gert Hoschek Institut fur ¨ Mineralogie–Petrographie...UniÕersitat ¨ Innsbruck, Innrain 52, A-6020 Innsbruck, Austria Received 19 March 2001; accepted 2 September 2001...c. 19.2–22.4 kbar, 594–627 8C. Retrogression at lower pressure is only rarely documented in the formation...probably took place during decompression at slightly lower P–T conditions in the presence of restricted amounts...between the basal unit with the Zentralgneis core–Lower Schieferhulle ¨ and the higher unit Upper Schieferhulle |
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