 | | Journal (article/letter/editorial) | | geochemical characteristics. The Spessart pluton has lower εNd(T) values (−2.3 to −3.0) and higher 87Sr/86Sri...Geowissenschaften, Wilhelmstraße 56, 72074 Tübingen, Germany e-mail: wolfgang.siebel@uni-tuebingen.de J. Rohrmüller...Bayerisches Landesamt für Umwelt, 95615 Marktredwitz, Germany II granitoids but likely represents the north-eastward...The final closure of the Rheic ocean during the Lower Carboniferous led to oblique Variscan collision...subdivided into two major tectonic units (Fig. 3). The lower tectonic unit, occupying the central part of the |  | | Journal (article/letter/editorial) | | Universität München, Arcisstr. 21, 80333 München, Germany b Dipartimento di Scienze della Terra, Università...Heidelberg, Germany d Mineralogische Staatssammlung München, München, 80333 München, Germany LMU e GeoBioCentre...Ludwig-Maximilians-Universität München, 80333 München, Germany Received 28 November 2006; accepted 7 February...data of carbonate-hosted ores from the Iglesiente district (Sardinia, Italy) and Vila Ruiva (Portugal), as...ores of the Broken Hill district, New South Wales (Australia) and Freihung (Germany) and review previously |  | | Book (edition) | | Mineralogie, Malteserstr. 74-100, D-12249 Berlin, Germany Earth Science Department / College of Science,...Feld 236, D-69120 Heidelberg, Germany Sodenstr. 19, D-12309 Berlin, Germany Graslitzer Str. 5, D-63791 Karlstein...Karlstein am Main, Germany Ludwig-Maximilians Universität, Department für Geo- und Umweltwissenschaften...Ressourcengeologie, Luisenstr. 37, D80333 München, Germany Bundesanstalt für Geowissenschaften und Rohstoffe...Rohstoffe (BGR), Stilleweg 2, D-30655 Hannover, Germany Dr. Salah Al-Khirbash Prof. Dr. Rainer Altherr & |  | | Journal (article/letter/editorial) | | Technische Hochschule, Wiillnerstrasse2, D-52056 Aachen,Germany ANDASADOLLAH JAFARZADEH NationalIranianSteelCorporation...consideredthe orebodiesto 100 years. Findings by Stahl, Bifhne, Kiimel, be replacementproductsof granite...Series,Darkuh Facies,and cambrian,Infracambrian,and lower Paleozoicis not TashkFormationare identical.Kriigerand...duplicationof the rhyolite-dominated EsfordiFormationinto a lower (Proterozoic)and an upper (Paleozoic)unit and the...purpleshalewith dolomite-limestone intercalations Series" (Lower Cambrian) by Huckriede et al. (BarutFormation);darkred |  | | Journal (article/letter/editorial) | | Bridge, New York, 288 Charlesite, 238 Chips from the Quarry, 4, 108, 156, 212, 261 Chlorite, 159 Chondrodite...Cummings, W., Mineralization at the Millington Quarry, New Jersey, 213 Currier, R. H . , book review...Diamond, 72 Diatoms, 172 Dietrich, R. V., Lone Jack Quarry, Rockbridge County, Virginia, 157 Dinosaurs, 71...from the Green River Formation, Wyoming, 29 Foote Quarry, Kings Mountain, North Carolina: Revisited 1984...285 Geology of North Carolina, H . S. Brown, 58 Goethite, 159 Gold, 11; Gold and Diamonds of North Carolina |  | | Report (volume) | | consumption.......................................... 75 Germany..................................................Bergischer-Kalkberg district................................... Siegerland district......................Lahn-Dill district............................................. Westerwald-Taunus-Vogelsberg district............................................... Weser district.................................................Kellerwald-Sauerland region................................... Lower Hesse.......................................... |  | | Journal (article/letter/editorial) | | supersaturated with respect to schwertmannite and also goethite and jarosite, but undersaturated with respect...deviates slightly into the stability field of goethite rather than jarosite. This suggests that the aquatic...eventually lead to the formation of jarosite instead of goethite. INTRODUCTION Microbiologically induced iron...bacterial oxidation of Fe2+, and jarosite and goethite are produced as thermodynamically stable phases...ferrihydrite normally occurs at near neutral pH and lower SO2– 4 activity conditions, but schwertmannite forms |  | | Journal (issue) | | Behnke Northbrook, IL Werner Lieber Heidelberg, W. Germany Eric Offermann Arlesheim, Switzerland Jeffrey A...Jeffrey mine (Quebec), Alpine Rodingites, Fluorite (Germany) $7 v.l0/#3 Taewha mine (Korea) Japan Twins (Quartz)...(Brazil), Jensen quarry (CA), Cunha Baixa mine, Paulkerrite $7 v.15/#6 Bad Ems (Germany), Touissit Vanadinite...Hills type locali ties, Urucum (Brazil), Kalkar quarry (CA), Kremsmiinster $8 v.17/#6 v.I8/#5 Hale Creek...l8/#4 Carrara Marble (Italy), Marburg Museum (Germany) v.18/#6 Stereo Issue— includes stereo viewer |  | Seidel, Eberhard, Okrusch, Martin, Kreuzer, Hans, Raschka, Helmut, Harre, Wilhelm (1976) Eo-Alpine Metamorphism in the Uppermost Unit of the Cretan Nappe System — Petrology and Geochronology. Contributions to Mineralogy and Petrology, 57 (3) 259-275 doi:10.1007/bf03542937 | Journal (article/letter/editorial) | | aphisches Institut, D-3300 Braunschweig, F.R. Germany Hans Kreuzer, Helmut Raschka, and Wilhelm Harre...Geowissenschaften und Rohstoffe, D-3000 Hannover 51, P.R. Germany Abstract. The uppermost unit of the Cretan nappe...sphene. In addition, pyrite (partly altered to goethite) and chalcopyrite were identified in specimen...pyrrhotite, and pyrite (partly altered to marcasite and goethite) were recognized in the gneiss LEN 4. This opaque...by some 20 0 C, if the water vapour pressure was lower than the total fluid pressure according to a ratio |  | | Journal (issue) | | net MARCH–APRIL 2019 Articles The Candelaria District Mineral County, Nevada .........................He also bought and operated a decorative-boulder quarry north of Phoenix. He and Phoenix dealer Bob Lane...adams@aero.org Bonanza silver ore made the Candelaria District one of Nevada’s largest silver producers in the...whiteite-(CaMgMg). INTRODUCTION The Candelaria district is located in southeastern Mineral County, along...account of the earlier history of the Candelaria district was compiled from Chalfant (1942), Shamberger |  | | Journal (article/letter/editorial) | | UniÕersitat ¨ Heidelberg, INF 234, D-69120 Heidelberg, Germany Received 5 February 1998; accepted 24 March 1999...from different sub-alpine mountain terrains in Germany and France has been undertaken. The objective of...On the basis of their protores, carbonate- and lower oxidersilicate-derived occurrences may be discerned...specimens sampled from the same location Žmine, quarry, dump., potentially representing different episodes...the low-temperature stages, thereupon dropping to lower values with further heating; Žc. U-shaped discordant |  | | Book | | Miinchen 5 gedruckt in der BRD van/ printed in West-Germany/ imprime en Allemagne l' Quest de/ impresso in...Coronadite 125 Psilomelan 164 Vanadinochre 74 Goethite 90 Lepidocrocite 34 Chalcophanite 145 Sohngeite... weiB blau weiB s 2 62 ENARGITE CUaAsS4 stahl-grau grauschwarz grauschwarz m 3 63 ERINITE...GLAUCODOT (Co,Fe)AsS grau-weiB schwarz m 5 74 GOETHITE (J. hell-braun gelb-braun s 71 GeSULVANITE...farblos weil3 g 2 79 HAEMATITE F~ Q3 schwarz stahl-grau kirsch-rot m bis 6 80 HEMJMORPHITE ZD4[(0H)21 |  | | 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 |  | | Journal (article/letter/editorial) | | involved in U reduction include magnetite (Fe3O4), goethite (α − FeOOH), and hematite (α − Fe2O3). Abiological...formation of Ca − U(VI) − CO3 complexes with a lower redox potential than that of U(VI) − CO3 com- Geomicrobiological...circumneutral pH. Most values are adapted from Nealson and Stahl (1997), except for those between various forms of...utilized by complex microbial communities (Nealson and Stahl, 1997). In principle, oxidation of an electron donor...energy conservation than is the counterpart with a lower redox potential (Fig. 1). Following this principle |  | | Journal (article/letter/editorial) | | Fibrous bacteria are sometimes mineralized with goethite, ferrihydrite, and buserite microcrystals, coated...shows that ferrihjdrite (2.54 and 2.24 ]k) and goethite (4.80, 4.18, and 2.24 A) coexist with amorphous...d that ferrihydrite (2.54 a n d 2.24 A ) a n d goethite (4.80, 4.18, a n d 2.24 A ) coexisted with amorp...distribution of Mg (upper right), Mn (lower left), and Fe (lower right) in zebra architecture, and a compositional...fibrous bacteria exhibit the 0.5-nm lattice image of goethite (Figure 10C and 10D). Coccus bacteria from a dark |  | | Journal (article/letter/editorial) | | Leibniz University, Welfengarten 1 D-30167 Hannover, Germany Abstract The Central European Variscides and their...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...extension was at its maximum during the Devonian and Lower Carboniferous. Basic submarine volcanic activity |  | 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...less As and little to moderate amounts of Sb are goethite; the grains where Sb dominates over Fe are poorly |  | Peretyazhko, T.S., Fox, A., Sutter, B., Niles, P.B., Adams, M., Morris, R.V., Ming, D.W. (2016) Synthesis of akaganeite in the presence of sulfate: Implications for akaganeite formation in Yellowknife Bay, Gale Crater, Mars. Geochimica et Cosmochimica Acta, 188. 284-296 doi:10.1016/j.gca.2016.06.002 | Journal (article/letter/editorial) | | akaganeite, goethite and natrojarosite precipitated in initial pH 2 solutions and goethite, hematite and...thermal hydrolysis of 0.2 M FeCl3 solution at 90 °C (Stahl et al., 2003) prepared from FeCl36H2O (Sigma Aldrich...akaganeite would also be expected to precipitate at lower more Mars-relevant temperatures (Zhao et al., 2012)...akaganeite, NJ = jarosite, G = goethite, H = hematite. pH 2, while goethite (a-FeOOH) was detected in the...1 and pH2/S0.2, in addition to akaganeite and goethite (Figs. 1b and 2b). Akaganeite peaks were broader |  | Courtin-Nomade, A., Bril, H., Beny, J.-M., Kunz, M., Tamura, N. (2010) Sulfide oxidation observed using micro-Raman spectroscopy and micro-X-ray diffraction: The importance of water/rock ratios and pH conditions. American Mineralogist, 95 (4) 582-591 doi:10.2138/am.2010.3331 | Journal (article/letter/editorial) | | iron (oxy)hydroxides, as has been observed for goethite or jarosite in the latter stages of sulfide oxidation...with the inset showing the OH region, (e and f) goethite. COURTIN-NOMADE ET AL.: IMPORTANCE OF THE WATER/ROCk...Elemental sulfur (S) and goethite (G) (see location in Fig. 2b); (c) goethite, parasymplesite (Ps), and...(f) jarosite/hydronian jarosite (Jh); and (g) goethite; see location of these analyses in Figure 3a....in EDAX elemental maps, and is associated with goethite and/or jarosite, which are typical secondary products |  | | Journal (article/letter/editorial) | | Key Points: • At LT, ferrihydrite converted into goethite only in the most acidic conditions; at HT and...whereas a sample of pure ferrihydrite produced only goethite under the same conditions. At high temperature...crystalline iron oxide species, most commonly goethite [Cornell and Schwertmann, 2003, and references...mixtures), including superparamagnetic hematite and goethite, ferrihydrite, akaganéite, and schwertmannite...to greater error propagation associated with a lower abundance), the amorphous component of Windjana |  | Burkhardt, Eva-Maria, Meißner, Sylvia, Merten, Dirk, Büchel, Georg, Küsel, Kirsten (2009) Heavy metal retention and microbial activities in geochemical barriers formed in glacial sediments subjacent to a former uranium mining leaching heap. Geochemistry, 69. 21-34 doi:10.1016/j.chemer.2008.12.003 | Journal (article/letter/editorial) | | University Jena, Dornburger Straße 159, D-07743 Jena, Germany Institute of Earth Sciences, Friedrich Schiller...Schiller University Jena, Burgweg 11, D-07749 Jena, Germany b Received 1 October 2008; accepted 16 December...sediments of a former uranium mining district (Ronneburg, Germany) and to evaluate the potential microbial...iron-rich layer. Crystalline iron oxides, mainly goethite, served as important heavy metal sorbents in the...Mining; Microbial iron reduction; Manganese oxide; Goethite; Heavy metal tolerance 1. Introduction Corresponding |  | | Journal (article/letter/editorial) | | soils and sediments. Five coated sands including Goethite, Lepidocrocite, Ferrihydrite, Hematite and Magnetite...coatings have been characterized as ferrihydrite, goethite and lepidocrocite (Wang et al., 1993). The stability...mg Fe/g of sand in natural soils and sediments (Stahl and James, 1991; Wang et al., 1993; Kaal et al....Herman, 1998, Lai et al., 2000; Zeng, 2003) and goethite coated sand (Scheidegger et al., 1993; Cheng et...Xu and Axe, 2005). In this work, 5 Fe oxides (Goethite, Lepidocrocite, Ferrihydrite, Hematite and Magnetite) |  | | Journal (article/letter/editorial) | | with arfvedsonite, partially coated by yellow goethite, 8.6 cm. Eric Farquharson specimen. Figure 14...February 2013 Figure 15 (lef). Pseudomorphic goethite after cubic pyrite crystals clustered on a terminated...specimen. Figure 18 (below). A pale gray 1.4-cm goethite pseudomorph after parkite(?), associated with...aegirine crystals, confirming its source as Zomba. Goethite is prevalent on most of the specimens that come...An interesting occurrence of goethite was found on a few specimens-goethite pseudomorphs after what is |  | | Report (chapter) | | partial pseudomorphs of galena, and in the Lake District, Cumbria, UK, beaverite was observed to have altered...from solution. At this locality, as in the Lake District, UK, the beaverite may well have formed at some...1961, Dudas 1984, 1987, Mermut and Arshad 1987), Germany (Schwertmann 1961), Scandanavia (Oeborn and Berggren...that the minerals, regardless of rate, alter to goethite. Thus, in gossans, such as those of the Iberian...belt, the near-surface portion ofthe gossan is goethite-rich and jarosite-poor, and only at depth does |  | | Journal (article/letter/editorial) | | as intergrain cements and contained crystalline goethite and rancieite/todorokite. Adsorption on a synthetic...Me(II)EDTA’- complexes are adsorbed by Fe and Al oxides at lower pH via surface coordination (Bowers and Huang, 1986;...into a conformably overlying conglomerate with goethite-filled oxyhydroxide concretions. The color and...surfaces by a modified version of the method of Stahl and James ( 1991). The Fe sand was prepared by the...oxyhydroxides, translucent hematite, and goethite (Fig. 1) . Hematite, goethite, and small amounts of magnetite |
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