 | | Journal (article/letter/editorial) | | ABsrRAcr The Climax pegmatite of the Micanite district in Colorado contains unusually large masses of...discussed. IurnooucttoN The Micanite pegmatite district iies acrossthe Park-Fremont County line in south-centralColorado...rocks that include granitic gneiss, muscovite gneiss, siliimanite gneiss, mica schist, and biotite granite...grinding quality muscovite were obtained. Within the district ten major quarriesand prospectsare recorded(Fig...biotite, garnet, apatite, magnetite, beryl, sillimanite, Coun t3r \. ,7-ezzont Co un t-y { ,fa :\ |  | Klein, T., Kiehm, S., Siebel, W., Shang, C.K., Rohrmüller, J., Dörr, W., Zulauf, G. (2008) Age and emplacement of late-Variscan granites of the western Bohemian Massif with main focus on the Hauzenberg granitoids (European Variscides, Germany) Lithos, 102 (3) 478-507 doi:10.1016/j.lithos.2007.07.025 | Journal (article/letter/editorial) | | Hauzenberg granitoids (European Variscides, Germany) T. Klein a,⁎, S. Kiehm b , W. Siebel c , C.K. Shang c , J...different timing of HT metamorphism in northern Austria and the Bavarian Forest is interpreted as being...E-mail addresses: T.Klein@em.uni-frankfurt.de (T. Klein), skiehm@web.de (S. Kiehm), wolfgang.siebel@uni-tuebingen...emplacement of numerous granitoid plutons. In the T. Klein et al. / Lithos 102 (2008) 478–507 Bohemian Massif...reported from the Moldanubian unit in Germany and Austria (see Section 5). We greatly benefited from prior |  | | Journal (article/letter/editorial) | | et al. 1982), Zambia (áèek Vrána 2002) and Austria (Ertl et al. 1997, Kalt et al. 2001). They are...gave T ~ 670 °C and P ~ 14 kbar for migmatitic gneiss. Anatexis producing kyanite-bearing leucosome was...whole outcrop, cuts massive migmatized biotite gneiss. The veinlet is locally folded, generally WNW-trending...about 1 cm thick, crosscutting the host biotite gneiss. Pegmatite veinlets of the AB-BBe subclass from...+ Plg + Ms + Dum I + Tur Qtz II + Dum II ± sillimanite (?) fine-grained phyllosilicates Vémyslice |  | | Journal (article/letter/editorial) | | 1007/s00710-016-0427-5 ORIGINAL PAPER The Blaník Gneiss in the southern Bohemian Massif (Czech Republic):...Czech Republic. The rocks, known locally as Blaník gneiss, are strongly peraluminous and classify as phosphorus-rich...origin and the abundance of tourmaline, the Blaník gneiss is exotic within the spectrum of Early Palaeozoic...Monotonous Group represent zones of higher and lower heat flow within the Early Palaeozoic northern Gondwana...Salzburg, Hellbrunnerstrasse 34, A-5020 Salzburg, Austria helpful for terrane correlations and palaeogeographic |  | | Journal (article/letter/editorial) | | (Moldanubian terrain, Austria) Robert Sturm Brunnleitenweg 41, A-5061 Elsbethen, Austria a r t i c l e i...a c t A medium-scale shear zone exposed in the gneiss rocks of the South-western Bohemian Massif (Moldanubian...phases of cordierite include garnet, biotite, and sillimanite. According to the results obtained from the garnet-cordierite...the P-T field and the stability of coexisting sillimanite. They are subject to a reduction from 0.35 GPa...cordierite often breaks down to enstatite and sillimanite or, at higher temperature, to sapphirine and |  | Kobayashi, Tomoyuki, Hirajima, Takao, Kawakami, Tetsuo, Svojtka, Martin (2011) Metamorphic history of garnet-rich gneiss at Ktiš in the Lhenice shear zone, Moldanubian Zone of the southern Bohemian Massif, inferred from inclusions and compositional zoning of garnet. Lithos, 124 (1) 46-65 doi:10.1016/j.lithos.2010.11.003 | Journal (article/letter/editorial) | | l i t h o s Metamorphic history of garnet-rich gneiss at Ktiš in the Lhenice shear zone, Moldanubian...equilibrium stages were identified from garnet-rich gneiss at Ktiš in the Lhenice shear zone of the southern...the rock mainly comprises cordierite (Crd), sillimanite (Sil), biotite (Bt), garnet (Grt), quartz (Qtz)...located outside of higher-Grs (Xgrs = 0.27)- and lower-Prp (Xprp = 0.03)-content contours. These observations...bodies surrounded by the Gföhl granulite/ migmatitic gneiss, which has no HP/UHP evidence in their matrix, |  | | Journal (article/letter/editorial) | | leaching. Microstructural relations indicate sillimanite- and K-feldspar-consuming reactions producing...recrystallized quartz-feldspar fabric. Residual sillimanite occurs as minute aggregates armoured by muscovite...or rutile. Concurrent reactions in calc-silicate gneiss interbands resulted in replacement of diopside...amphibolite-facies gneisses and migmatites in sillimanite-K-feldspar zone and some granulite bodies. They...both as retrograde rocks derived from former sillimanite-biotite gneisses (Zelenka 1926) and as prograde |  | | Journal (article/letter/editorial) | | muscovite – plagioclase – quartz and crosscutting gneiss veins were studied in the Sopron Mountains near...textural domains from both the micaschist and the gneiss veins. Thermobarometry of subsequent garnet generations...orthogneisses of the area. Gneiss veins crosscutting the micaschist show slightly lower peak pressures between...words: high-pressure metamorphism, micaschist, gneiss vein, geothermobarometry, P –T path. Introduction...Draganits 1998) and form the easternmost outcrop of the Lower Austroalpine Unit (Fig. 1 a). The reconstruction |  | | Report (issue) | | DIVISION SILLI ANITE Andalusite, Kyanite, Sillimanite By E. R. VARLEY, Ph.D. (Lond.), B.Sc. (Leeds)...SJLLIMANITE Introduction • • • • • • • • The Sillimanite Minerals • • • • • • • Origin and Mode of Occurrence...Requirements, Specifications and Testing of Sillimanite Minerals • • • • • • • • • Production, Marketing...Materials • • • • • 1 2 8 12 15 17 19 25 30 34 SILLIMANITE IN COMMONWEALTH COUNTRIES 39 United Kingdom... .. • 84 • •• 111 PAGE SILLIMANITE IN FOREIGN COUNTRIES Austria Bulgaria Finland France Germany |  | Kröner, A., O'Brien, P. J., Nemchin, A. A., Pidgeon, R. T. (2000) Zircon ages for high pressure granulites from South Bohemia, Czech Republic, and their connection to Carboniferous high temperature processes. Contributions to Mineralogy and Petrology, 138 (2) 127-142 doi:10.1007/s004100050013 | Journal (article/letter/editorial) | | clinopyroxene. A further high temperature overprint at lower pressure (ca. 4 kbar) is re¯ected in the development...prevalent. These conditions can be those of a stable lower crustal geotherm or, alternatively, those attained...information pertaining to conditions and processes in the lower continental crust. The most voluminous of the scattered...bodies, like their counterparts in neighbouring Lower Austria, comprise part of the GfoÈhl Unit, the tectonically...contains a polydeformed, migmatitic, granitic gneiss (GfoÈhl gneiss, probably overprinted granulite) and variegated |  | | Journal (article/letter/editorial) | | Mountains: BK Brennberg, Kovács árok; OQ Oromveg Quarry; Br Brennberg; V€o V€or€oshid; SR SR-1 borehole;...Deákkut; Vá Váris; Kh Kopháza; VQ Vashegy Quarry Argon and fission track dating 193 Variscan...the same crystalline slab (sometimes in the same quarry) a completely Alpine mineral paragenesis was formed...are related to the ‘‘Grobgneis’’ series of the Lower Austroalpine nappe complex. The crystalline schists...schists are mostly made up of orthogneisses (Sopron Gneiss Formation, SGF) and mica schists (Sopron Micaschist |  | | Journal (article/letter/editorial) | | exhumation through vertical extrusion of the orogenic lower crust. Keywords: high-pressure granulites, P–T path...Moldanubian Zone of southern Bohemia, Moravia and Lower Austria, 2 – Saxonian Massif, 3 – Münchberg Massif,...leucogranulite and c – hyperpotassic granulite, Plešovice quarry, Blanský les Massif. lites with similar lithology...Felsic Grt–Opx-bearing HP granulites with slightly lower Si and higher Fe and Ca contents occur only rarely...Moldanubian Zone in south Bohemia, Moravia and Lower Austria. 47 Jana Kotková a b Fs Ky Grt Ky Grt |  | | Report (issue) | | mineral occurring in the report area in Precambrian gneiss; this is the first recorded occurrence of wagnerite...oriented parallel to foliation defined by fibrolitk sillimanite.......................................................... 11, 12 13, 14. Prismatic sillimanite cutting wagnerite and other minerals...................15. Corundum containing numerous needles of sillimanite................................................lenses of sillimanite-plagioclase gneiss of Precambrian age. Other minerals in the gneiss are corundum |  | Schantl, Philip, Hauzenberger, Christoph, Finger, Friedrich, Müller, Thomas, Linner, Manfred (2019) New evidence for the prograde and retrograde PT-path of high-pressure granulites, Moldanubian Zone, Lower Austria, by Zr-in-rutile thermometry and garnet diffusion modelling. Lithos, 342. 420-439 doi:10.1016/j.lithos.2019.05.041 | Journal (article/letter/editorial) | | highpressure granulites, Moldanubian Zone, Lower Austria, by Zr-inrutile thermometry and garnet diffusion...high-pressure granulites, Moldanubian Zone, Lower Austria, by Zr-in-rutile thermometry and garnet diffusion...high-pressure granulites, Moldanubian Zone, Lower Austria, by Zr-in-rutile thermometry and garnet diffusion... Jakob-Haringer- Strasse 2a, 5020, Salzburg, Austria School of Earth and Environment, University of...University of Graz, Universitätsplatz 2, 8010, Graz, Austria b b PT Philip Schantl a,*, Christoph Hauzenberger |  | | Journal (article/letter/editorial) | | Novosedly Šebanov lda 20 km Český Krumlov Austria Mo N ath oli th České Budějovice Fig. 1...Mn-rich garnet–quartz rocks. 2. Geological setting gneiss and amphibolite, is assumed to be mainly Neoproterozoic...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...al. 1995) and the Mesoproterozoic Dobra gneiss in Lower Austria (Gebauer and Friedl 1994; Friedl et al |  | | Journal (article/letter/editorial) | | exhumation of lower orogenic crust, or whether smaller portions of higher-pressure lower crust were combined...combined with a lower-pressure matrix. Kyanite-K-feldspar granulite shows peak conditions of 16.5 kbar...garnet overgrowths of a flat foliation defined by sillimanite and biotite. Garnet growth in such an assemblage...reworking in the flat fabric that involves growth of sillimanite in paragneiss and kyanite-K-feldspar granulite...indicate that kilometre-scale portions of highpressure lower orogenic crust were exhumed to middle crustal levels |  | 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...metamorphic rocks of the Sopron Hills belonging to the Lower Austroalpine tectonic unit. Monazite (and xenotime)...from comparable Lower Austroalpine tectonic units in the region of Birkfeld (Styria, Austria), and the REE...of the Austroalpine basement, belonging to the Lower Austroalpine nappe system (Kisházi and Ivancsics...–sericite –sillimanite –schists with staurolite relics. Biotite – andalusite – sillimanite schists, which |  | | Journal (article/letter/editorial) | | 22 Fig. 1 Geological map of the Waldviertel (Lower Austria) according to Weber and Duyster (1990). The...different units (Gföhl granulite, Raabs unit, Gföhl gneiss and Meisling unit), and generally high-grade (up...is subdivided into a Proterozoic basement (Dobra gneiss) and the mainly metasedimentary upper part (Variegated...It is suggested that the protolith of the Dobra gneiss was a felsic igneous rock (Frasl 1989; Vellmer...(1995) equate the Dobra gneiss with the Moravian Bittesch gneiss. The Dobra gneiss is overlain by the Variegated |  | Ertl, Andreas, Mali, Heinrich, Schuster, Ralf, Körner, Wilfried, Hughes, John M., Brandstätter, Franz, Tillmanns, Ekkehart (2010) Li-bearing, disordered Mg-rich tourmaline from a pegmatite-marble contact in the Austroalpine basement units (Styria, Austria) Mineralogy and Petrology, 99 (1) 89-104 doi:10.1007/s00710-009-0082-1 | Journal (article/letter/editorial) | | contact in the Austroalpine basement units (Styria, Austria) Andreas Ertl & Heinrich Mali & Ralf Schuster &...Austroalpine basement units (Rappold Complex) in Styria, Austria, are characterized. All these Mg-rich tourmalines...Universität Wien, Althanstrasse 14, 1090 Vienna, Austria e-mail: andreas.ertl@a1.net E. Tillmanns e-mail:...Montanuniversität Leoben, Peter-Tunner-Strasse 5, 8700 Leoben, Austria e-mail: heinrich.mali@unileoben.ac.at R. Schuster...Geologische Bundesanstalt, Neulinggasse 38, 1030 Vienna, Austria e-mail: ralf.schuster@geologie.ac.at W. Körner |  | | Journal (article/letter/editorial) | | authors are printed in SMALLCAPITALS,Subjects in lower-case roman, and Localities in italics. The minerals...78o; of abnormal composition, exsolution of sillimanite from, 815. Anorthoclase, Nigeria, opt., 37o....Zealand, grandidierite, 615. Blende, Algeria, Austria, Congo, France, Greece Spain, Yugoslavia, cathodoluminescence...Australia, alkali feldspar, anal., d2oi, 489. Bosahan quarry, Falmouth, Cornwall, biotite, 2IO. BOWDEN (P.)...see ATTEWELL(P. R.), 428. Burgstein, Oetztal, Austria, omphacite, 61. BURKE (E. A. J.), KIEFT(C.), FELItJS(R |  | | Journal (article/letter/editorial) | | garnets as sediment provenance indicators of the Lower Carboniferous Culm sediments, Drahany Uplands, Bohemian...Available online 3 February 2005 Abstract The Lower Carboniferous Culm Basin is part of the European...garnet assemblages ranging from the Protivanov to lower part of the Myslejovice Formation (Goniatite zones...the Bohemian Massif have usually higher Ca and/or lower Mg contents. The major and trace element compositions...Keywords: Garnet chemistry; Trace elements; Granulites; Lower Carboniferous Culm Basin; Provenance; Bohemian Massif |  | | Journal (article/letter/editorial) | | acritarchs in a different high-grade metamorphic gneiss unit within the Schwarzwald indicate an Upper Proterozoic...Rhin egra ben LLZ CSGC BLZ SSGC Stephanian to Lower Permian continental sediments and volcanic rocks...location of the Bühl-1 drilling site and the Omerskopf Gneiss Complex. The inset shows the Variscan belt in Europe...Baden-Baden Zone; OGC Omerskopf Gneiss Complex; CSGC Central Schwarzwald Gneiss Complex; BLZ Badenweiler-Lenzkirch...Badenweiler-Lenzkirch Zone; SSGC Southern Schwarzwald Gneiss Complex; RH Rhenohercynian Zone; ST Saxothuringian Zone; |  | | Journal (article/letter/editorial) | | and timing of their passage through the mantle to lower crustal depths, and the subsequent exhumation to...continental crust represented mainly by the Dobra gneiss (dominated by a ~1.38 Ga zircon component, Gebauer...Gebauer and Friedl 1994; Friedl et al. 2004) in Lower Austria and the Světlík orthogneiss (2.1 Ga protolith...concept has recently been questioned both in Lower Austria (Racek et al. 2006) and Bohemia (Štípská et...vertical extrusion of thermally softened orogenic lower crust (Lexa et al. 2011). Subsequent mid-crustal |  | | Journal (article/letter/editorial) | | example from the Gfohl ¨ gneiss–granulite association in the Moldanubian Zone, Austria R.A. Cooke a,) , P.J...Salzburg, Hellbrunnerstraße 34, A-5020 Salzburg, Austria Institut fur ¨ Geowissenschaften, Mineralogie-Petrologie...are often found preserved within an apparently lower grade gneissose matrix. Resolving the true extent...comparisons can be made. Within the Gfohl ¨ Unit in Austria, an integral part of the Moldanubian Zone of the...found intercalated within the voluminous Gfohl ¨ gneiss. Calculated P–T conditions for the granulites indicate |  | | Journal (article/letter/editorial) | | 1) comprising parts of Czechoslovakia, Poland, Austria and Germany. The block is truncated to the north-east...similar high grade nappes within the Moldanubian of Austria and Czecho- slovakia. On this basis, and following...granodioritic (Finger et al., 1989) Thaya (in Austria) or Brno (in Czechoslovakia) batholith yielding...now exposed, beneath the MZ, in the Thaya (in Austria) and Svratka (in Czechoslovakia) windows (Schulmann...(Sk/tcel, 1981). The basement here is the Keprnik gneiss (546 Ma, Rb/Sr, Van Breemen et al., 1982) and the |
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Gneiss quarry, Ebersdorf, Klein-Pöchlarn, Melk District, Lower Austria, Austria