 | | Journal (article/letter/editorial) | | physical–chemical regime (North-Bavarian Kaolin Mining District, Germany) Harald G. Dill a,⁎, Stephan Kaufhold b, Angela...University, Welfengarten 1, D-30167 Hannover, Germany Bundesanstalt für Geowissenschaften und Rohstoffe...Rohstoffe, D-30631 Hannover, P.O. Box 510163, Germany c Bundesanstalt für Geowissenschaften und Rohstoffe,... Wilhelmstraße 25-30, Germany d Schönwalder Straße 60, D-13585 Berlin, Germany b a r t i c l e i n...Sedimentological–mineralogical facies Mesozoic SE Germany ⁎ Corresponding author. E-mail address: haralddill@web |  | | Book | | Carolathine, a material similar to allophane but lower in water content, was described by Sonnenschein...It is named from the locality, Askana, Ozurgety district, Georgia, vol- Transcaucasia. Belyankin, D....Hannay, , p. , BRAMMALLITE is named (SODIUM-ILLITE). Bannister (1943) after Dr. Alfred Brammall...differing from illite in containing soda in excess of potash, also called sodium-illite. It occurs in... Bannister, F. A. (1943) Brammallite (sodiunrt-illite), a new mineral from Llandebie South Wales Mineral |  | | Journal (article/letter/editorial) | | Leibniz University, Welfengarten 1 D-30167 Hannover, Germany Abstract The Central European Variscides and their...extraterrestrial impacts. The glauconite-kaolinite-illite-smectite-chlorite assemblages are efficient tools...with the leading raw materials sand plus gravel, quarry and dimension stones and limestones used for the...(Fig. 1). It has to be noted that among the term quarry and dimension stones there are also some hidden...rocks which formed the Precambrian through the Lower Carboniferous, when the Visean folding put an end |  | | Journal (article/letter/editorial) | | for the timing of kaolinization in Northeast Bavaria, Germany H. Albert Gilg ) Lehrstuhl fur Lichtenbergstr...Geochemie, Technische UniÕersitat ¨ Munchen, ¨ Munich, Germany Received 23 December 1997; accepted 22 June 1999...western border of the Bohemian Massif, northeast Bavaria, that did not suffer a deep burial Žless than 1000...rights reserved. Keywords: DrH ratio; Northeast Bavaria; Kaolins 1. Introduction The majority of European...geochronological information. In northeastern Bavaria, southern Germany, DrH ratios of sedimentary kaolins, which |  | | Report (chapter) | | (Permian) by K-Ar dating of related hydrothermal illite Horst Zwingmann, Norbert Clauer and Reinhard Gaupp...(Permian) by K-Ar dating of related hydrothermal illite HORST ZWINGMANN 1'2, N O R B E R T CLAUER 1...Geowissenschaften, Universiti~t Mainz, D-55099 Mainz, Germany 4present address." Institut fi~r Geowissenschaften...Geowissenschaften, Universitgtt Iena, D-07749 lena, Germany Abstract: Authigenic iUite is the most abundant clay mineral...Carboniferous and Rotlie- gend rocks of northern Germany. In spite of extreme present-day burial depths |  | | Journal (article/letter/editorial) | | arsenic mobilization in South Asian aquifers Mason O. Stahl a,⇑, A.B.M. Badruzzaman c, Mehedi Hasan Tarek c...author. E-mail address: stahlm@union.edu (M.O. Stahl). https://doi.org/10.1016/j.gca.2020.08.012 0016-7037/Ó...Southeast Asia remains incompletely understood. M.O. Stahl et al. / Geochimica et Cosmochimica Acta 288 (2020)...2011; McArthur et al., 2011; Lawson et al., 2013; Stahl et al., 2016; Nghiem et al., 2019). Resolving these...In this case, enhanced recharge from ponds would lower As concentrations simply by dilution. Considering |  | Ertefai, Tobias F., Heuer, Verena B., Prieto-Mollar, Xavier, Vogt, Christoph, Sylva, Sean P., Seewald, Jeffrey, Hinrichs, Kai-Uwe (2010) The biogeochemistry of sorbed methane in marine sediments. Geochimica et Cosmochimica Acta, 74 (21) 6033-6048 doi:10.1016/j.gca.2010.08.006 | Journal (article/letter/editorial) | | University of Bremen, Leobener Str., D-28359 Bremen, Germany b Central Laboratory for Crystallography and Applied...University of Bremen, P.O. Box 330440, D-28334 Bremen, Germany c Woods Hole Oceanographic Institution, Department...University of Bremen, Leobener Str., D28359 Bremen, Germany. Tel.: +49 421 218 65700; fax: +49 421 218 65715...acid (acidic extraction) (Horvitz, 1972; Faber and Stahl, 1983; Abrams, 1996a), long-term exposure to sodium...C1 vs. C2+ gases are below 100 (e.g., Faber and Stahl, 1984; Whiticar and Suess, 1990) and with d13C values |  | | Journal (article/letter/editorial) | | Lithosphare, Goldschmidstr. 3, D-37077 Gtittingen, Germany Abstract The Rhenohercynian thrust- and fold-belt...mineralisation, which is restricted to the Rhenish Massif, Germany. It is formed during four major stages and siderite...Siegerland district as synkinematic lodes which are hosted by low-grade metamorphic pelites of Lower Devonian...inclusions, R E E fractionation, Rhemish Massif, Germany. Introduction T i n s paper presents new data...Variscan siderite lodes of the Siegerland district, Germany, which have been among the world's largest |  | | Journal (article/letter/editorial) | | the preservation of random orientation. Clay with lower water content showed less reorientation due to compression...determination 825 3. X-ray traces of randomly oriented illite clay flakes Experiment One—sedimentation observations...results of compression tests on illite and clay mixtures of kaolinite and illite . . . Origin of underclays...based their conclusion on the presence of abundant illite (". . . is easily altered by weathering processes...or no ferrous iron to produce a greenish tint. Stahl (1912) observed a greenish decomposition product |  | | Report (issue) | | Analytical procedure Mineral analyses General statement Lower Pottsville underclays in Goose Lake area, Grundy...composed largely of kaolinite. Varying amounts of illite The completely noncalcareous underclays No. 2...composed almost wholly of a distinctive member of the illite clay mineral group. The calcareous underclays and...calcareous which occur beneath younger coals contain illite as the essential clay mineral constituent. Except...bands in upper part and thin limestone layers in lower part 7. Limestone 6. Calcareous shale Black "fissile" |  | | Journal (article/letter/editorial) | | J. HOEFS Goldschmidtstr. 1, D-34 GGttingen, Germany and M. FREY Mineralog.-Petrograph. Institut,...relationship has been observed in natural gases by STAHL (1974). Under equilibrium conditions isotope fractionations...of coals, which represents a similar process at lower temperatures (CoLOMBOet al., 1970). Due to these...(samples l-1 1). They consist of illite, irregular mixed-layer illite-montmorillonite, chlorite, kaolinite...paragonite-muscovite formed from the mixed-layer illite-montmorillonite with a possible interaction of |  | | Journal (article/letter/editorial) | | ferrihydrite normally occurs at near neutral pH and lower SO2– 4 activity conditions, but schwertmannite forms...various aluminous clay minerals such as kaolinite, illite, rectorite and smectite (Kawano and Tomita 1991)...A3 confirmed that they are composed of quartz, illite, pyrite, and feldspar. The chemical composition...jarosite with some contamination of quartz and illite from the altered rocks (Fig. 2b). The broad bulge...schwertmannite with variable amounts of quartz and illite from the altered rocks. Brought to you by | University |  | | Journal (article/letter/editorial) | | Research Kiel, Wischhofstraße 1-3, D-24148 Kiel, Germany Sonderforschungsbereich 574 “Volatiles and Fluids...University, Wischhofstraße 1-3, D-24148 Kiel, Germany Received 20 July 2012; accepted in revised form...temperature-controlled conversion of smectite to illite is considered the most important dehydration process...freshening at seafloor seeps preferentially occurs at lower latitudes (Central America, Barbados, Mediterranean...temperatures (e.g. transition from smectite to illite at 60– 150 °C; Kastner et al., 1991) within both |  | Williams, Lynda B., Ferrell, Ray E., Hutcheon, Ian, Bakel, Allen J., Walsh, Maud M., Krouse, H.Roy (1995) Nitrogen isotope geochemistry of organic matter and minerals during diagenesis and hydrocarbon migration. Geochimica et Cosmochimica Acta, 59 (4) 765-779 doi:10.1016/0016-7037(95)00005-k | Journal (article/letter/editorial) | | enriched in “N. Diagenetic clay minerals (e.g., illite) commonly form in the temperature range of hydrocarbon...fluids migrated into the reservoir after authigenic illite had formed. Fluids become enriched in 15Nduring...matter in source rocks is relatively abundant (e.g., Stahl, 1977; Peters et al., 1978, 1981; Grizzle et al...progressive increase in S”N of the altered oil. Stahl ( 1977) demonstrated this in a study of the 6”N...Coast oil fields was associated with mixed-layered illite/smectite. Analyses of samples with organic matter |  | | Journal (article/letter/editorial) | | 1998.. The source rock is a coalbearing series of Lower Cenomanian, Abbian and Aphian age with organic matter...0‰ ŽMaksimov et al., 1975; Boigk et al., 1976; Stahl, 1977; Weinlich, 1991.. 3. Experimental and results...1988a. and Mid-European basin ŽBoigk et al., 1976; Stahl, 1977; Weinlich, 1991.. Y. Zhu et al.r Chemical...is absorbed by authigenic clay minerals, such as illite and montmorillonite in sedimentary rocks ŽCooper...Part of it is absorbed by clay minerals, such as illite. Another part can transform into molecular nitrogen |  | | Book (edition) | | Hoering (Washington, D.C.), H. Hubberten (Karlsruhe, Germany), Y. Kolodny (Jerusalem), J. O'Neil (Menlo Park...Japan), M. Schoen (Hannover, Germany), E. Usdowski (Gottingen, Germany). However, I take, of course,...manuscript. Drs. H.P. Schwarcz, S.M.F. Sheppard, W. Stahl, and D.H. Welte have kindly reviewed an early draft...formula: The molecule of the heavy isotope will have a lower zero-point energy than the molecule of the light...zero-point energy of the light molecule and the lower line (EH), that of the heavy one. This means that |  | | Journal (article/letter/editorial) | | ore deposits, like those of the Nikopol-Chiatura district in Ukraine and Georgia (Bolton and Frakes, 1985)...intercalations. Quartzite interbeds have sharp erosional lower contacts and flat to wave-rippled tops, occasionally...composed of muscovite-illite with minor chlorite. Shale beds are composed of muscovite-illite and chlorite with...(Schaefer, 1998). Smectite is conspicuously absent. Illite and chlorite crystallinity and polytype studies...(partly replaced, lower left), braunite-rich pellet (top), and hematite-chert pellet (lower right) hosted |  | | Journal (article/letter/editorial) | | K-feldspar leads to in situ crystallixation of illite and chlorite as well as neodymium isotopic equilibration...relationships between source rocks and petroleum (e.g., STAHL, 1977; ORR, 1986). Some of these correlation attempts...Franceviliian black shales. (b) Aothigenic clay minerals (illite, chlorite) located in the matrix of the black shales...shales. fc) Silicified and altered K-feldspar (lower left comer of the photomicrograph) with organic...Replacement of detrital K-feldspar (microcline) by illite and chlorite. tNd values of -6.5 I + 2.02 and |  | Majzlan, J., Lalinska, B., Chovan, M., Blass, U., Brecht, B., Gottlicher, J., Steininger, R., Hug, K., Ziegler, S., Gescher, J. (2011) A mineralogical, geochemical, and microbiogical assessment of the antimony- and arsenic-rich neutral mine drainage tailings near Pezinok, Slovakia. American Mineralogist, 96 (1) 1-13 doi:10.2138/am.2011.3556 | Journal (article/letter/editorial) | | 11, Friedrich-Schiller University, 07749 Jena, Germany Department of Mineralogy and Petrology, Mlynská...23b, Albert-Ludwigs University, 79104 Freiburg, Germany 4 Institute for Synchrotron Radiation, Karlsruhe...Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany 5 Institute of Biology II, Schänzlestrasse 1, Albert-Ludwigs...Albert-Ludwigs Universität, 79104 Freiburg, Germany 1 2 aBstraCt The mineralogical composition of mining...Upper impoundment 48.320904 17.235489 910 780 9725 Lower impoundment 48.318678 17.237549 4830 5580 40 380 |  | Gao, Ping, Liu, Guangdi, Wang, Zecheng, Jia, Chengzao, Wang, Tongshan, Zhang, Pengwei (2017) Rare earth elements (REEs) geochemistry of Sinian-Cambrian reservoir solid bitumens in Sichuan Basin, SW China: potential application to petroleum exploration. Geological Journal, 52 (2) 298-316 doi:10.1002/gj.2757 | Journal (article/letter/editorial) | | solid bitumens were primarily sourced from the lower Cambrian shales deposited under anoxic–euxinic conditions...2014). The Sinian was divided into two series: Lower Sinian Doushantuo Formation (Fm) (Z1do) and Upper...blue grey mudstones. The Cambrian consisted of the Lower Cambrian Qiongzhusi Fm (Є1q), Canglangpu Fm (Є1c)...photograph showing ribbon- or sheet-shaped authigenic illite in vesicles of solid bitumens. Black solid-line...contents of other organic elements H, O and N are lower than 4%, 6% and 0.7%, respectively. H/C atomic ratio |  | | Journal (article/letter/editorial) | | 30 Granite, Sr/Rb, relation, sedimentary rocks, lower Cambrian, United States, Massachusetts (Fairbairn... data, isotopes, uranium, ratios, Precambrian, lower Paleozoic, Europe, Scotland, Carn Chuinneag (Pidgeon... gneiss, Sr/Rb, isochrons, data, metamorphism, lower Precambrian, Hebron Gneiss, Labrador (Barton, Jackson...rocks, gneiss, whole rock, Sr/Rb, isochrons, data, lower Precambrian, Archean, Labrador, Saglek Bay (Hurst...data, aureoles, metamorphism, contact, intrusions, lower Precambrian, Montana, south, Stillwater Complex |  | | Journal (article/letter/editorial) | | BakonyMountains(Fig. 2). These ore occurrences are related to lower Jurassicmarine sediments.The primary ore wasformedduringlate...rest concordantly over the Triassicrocksand their lower contactis grada- MAGANESE DEPOSITS OFHUNGARY ...Dachstein limestone. The lowermost unit of the lower Liassicsequence is a white,yellowish-grayor pink...Dachsteinlimestone. On top of this unit lies a lower Liassic (Lotharingian) denselimestoneof red or pink...marineHippurites-bearinglimestones(Senonian) accumulated. Lower Eocenecontinentalclay and bauxite are overlainby |  | | Journal (article/letter/editorial) | | mimetic dolomitization, although there is a shift to lower isotope values in both carbon and oxygen in progressively...distinctly separate field of higher carbon and generally lower oxygen isotopes (Fig. 7). These are consistent with...oxygen isotope data (Fig. 11) indicate that the lower portion of the HYC Pyritic Shale (the correlate...diagenesis of 20° to 30°C. These δ18O values are much lower than those of present-day seawater, and they may...siltstones, intersected in DDH Homestead 6 and the lower part of DDH Barney Creek 3, have the same C-O isotope |  | | Journal (issue) | | Localities: The Erupción/Ahumada Mine, Los Lamentos District, Chihuahua, Mexico .............................WULFENITE from the Ahumada mine, Los Lamentos District, Chihuahua, Mexico; 6.6 cm across. Norm & Roz...he invested his own money in the Los Lamentos district and helped manage the operations there until his...Localities: The Erupcio;n/Ahumada Mine Los Lamentos District Chihuahua, Mexico Wendell E. Wilson The Mineralogical...decades the Ahumada lead mine in the Los Lamentos District, northeastern Chihuahua, has been famous among |  | | Journal (article/letter/editorial) | | Price ( 1991 ) and Price and Wenger (1992) on the Lower Permian Phosphoria Formation shale are plotted with...experiments on immature shales from the Upper Devonian-Lower Mississippian Bakken Formation are superimposed...data are needed. methane was generated at the lower experimental temperatures to document such trends...Cardott and Lambert (1985) for the Upper Devonian-Lower Mississippian Woodford shale from the Anadarko Basin...Anadarko Basin Lonestar Baden- 1 wellbore found (Stahl, 1974), is another example of an isolated trap which |
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