 | | Journal (issue) | | Erzgebirge • Die Grube Grünbleiberg im Oberbergischen Kreis Aschamalmit aus dem Habachtal • Schöne UV-Mineralien...Grünbleiberg bei Niedergelpe im Oberbergischen Kreis 52 Ein besonderer Amethyst-Fund in der Wurten, Kärnten...Grube Grünbleiberg bei Obergelpe nahe Gummersbach, Oberbergischer Kreis . Bildbreite 4 mm . Sammlung Göring...Institute (PARI) in schüre, die sich mit der Geschichte North Carolina/USA, Museumsder berühmten Grube Himmelsfachleute...berg beschäftigt. Der mit vielen hidie Sammler aus North Carolina storischen Bildern garnierte Band für Ausstellungszwecke |  | | Journal (article/letter/editorial) | | proved during a drilling program in 1966 to develop a mine and an operating company (Imcor Zinc, Pty Limited)...and administrative management of the mine. Preparatory work and mine development was completed during 1967...production commencing in May, 1969. During 1993 the mine suffered its first serious setback, when it was...PE Minerals, Namibia Pty Limited. Currently, the mine is SOUTH AFRICAN JOURNAL OF GEOLOGY, 2005, VOLUME...with production commencing with an initial run-of-mine annual production output of ~200,000 metric tons |  | | Journal (article/letter/editorial) | | rare pre-orogenic fluids discovered in Rosh Pinah mine samples display markedly different composition and...form of widespread syn-tectonic and post-tectonic quartz and, to a lesser extent, carbonate veins. Orogenic...strongly silicified footwall (Van Vuuren, 1986; Siegfried and Moore, 1990) is interpreted as fossil feeder...evidence for a syn-sedimentary exhalative origin (Siegfried and Moore, 1990; Frimmel et al., 1996b). The Rosh...fold hinges and along thrust faults. Synorogenic quartz veins crosscutting the ore body exhibit locally |  | | Report (issue) | | Morning Glor Morning Star Mount Tolman Mountain Lion North San Poil Fraction Old Hickory Overlook Oversight...Dutch Miller Grand Central Great Republic Guye Quartz Creek Royal Reward Seattle-Cascade Snoquahnie Una...Heel Placer Lone Jade Mammoth Minnesota New Light North American Old Discovery Placer 228 . . . . . . ...Derkey, Nancy L. Joseph, and Raymond Lasmanis Each mine or occurrence (record) in the database is intended...Washington Minerals-Part II, Metallic Minerals". For a mine to be included in this data set, it should have |  | Pawlig, S., Gueye, M., Klischies, R., Schwarz, S., Wemmer, K., Siegesmund, S. (2006) Geochemical and Sr-Nd isotopic data on the Birimian of the Kedougou-Kenieba Inlier (Eastern Senegal): Implications on the Palaeoproterozoic evolution of the West African Craton. South African Journal of Geology, 109 (3) 411-427 doi:10.2113/gssajg.109.3.411 | Journal (article/letter/editorial) | | RALF KLISCHIES, STEFAN SCHWARZ, KLAUS WEMMER AND SIEGFRIED SIEGESMUND 411 Geochemical and Sr-Nd isotopic...Georg-August-University, Goldschmidtstr. 3, 37077 Goettingen, Germany Present address: Nu Instruments Limited., Unit...Ralf Klischies, Stefan Schwarz, Klaus Wemmer and Siegfried Siegesmund Geoscience Center, Georg-August-University...Georg-August-University, Goldschmidtstr. 3, 37077 Goettingen, Germany e-mail: ralkli1234@web.de; sschwar2@gwdg.de; kwemmer@gwdg...granitoids host economic concentrations of gold in quartz vein mineralizations. Therefore, from economic |  | | Journal (article/letter/editorial) | | Volcanic Dykes in the North Chilean Coast Range By SIEGFRIED PICHOWIAK and CHRISTOPH BREITKREUZ, Berlin*)...swarms of predominantly marie dykes outcrop in the north Chilean Coast Range. These rocks are not lamprophyres...GeologischeRundschau 73, 3, 853- 868, Stuttgart 853 SIEGFRIED PICHOWIAK a n d CHRISTOPH BREITKREUZ KpaT~oe...maps of the dykes. 854 Volcanic Dykes in the North Chilean Coast Range I 70~ Tottat~ -25~ \ ' ...Flamenco-, E1 Salado- and San Pablo-plutons. 855 SIEGFRIED PICHOWIAKand CHRISTOPH BREITKREUZ In the area |  | | Journal (article/letter/editorial) | | ore provinces in the Otavi Moutain Land in the north and around Rosh Pinah in the south of Namibia being...or is of purely sedimentary-exhalative origin (Siegfried and Moore 1990). In Brazil, the Morro Agudo deposit...bodies to the south (Bushmanland Terrane) and to the north (Kakamas Terrane) of the Richtersveld Terrane. These...Rosh Pinah mine, 2 Skorpion mine, 3 Obib mountains, 4 Kolke, 5 Abos, 6 Haruchas, 7 Hoits mine preceded...used to infer a syn-sedimentary ore formation (Siegfried 1990). On the other hand, intense silicification |  | | Report (chapter) | | conservation strategies and case studies: introduction SIEGFRIED SIEGESMUND, THOMAS WEISS & AXEL VOLLBRECHT G...GOttingen, Goldschmidtstr. 03, 37077 GOttingen, Germany The weathering of historical buildings, as well...lyellcollection.org/ by guest on February 12, 2015 2 SIEGFRIED SIEGESMUND E T A L . reactions, but under thermal...(type of fluvial architecture) and diagenesis (quartz cement and clay matrix contents). This is evidenced...lyellcollection.org/ by guest on February 12, 2015 4 SIEGFRIED SIEGESMUND E T A L . the mica texture is the |  | | Journal (article/letter/editorial) | | based on illite crystallinity, and ¯uid inclusions north of the fault zone are above the oil window. Metamorphic...L-M University, Luisenstr. 37, D-80333 Munich, Germany e-mail: Wlady.altermann@iaag.geo.uni-muenchen.de...can attain over 500 m thickness (Altermann and Siegfried, 1997). The age of the Schmidtsdrif 383 Fig...approximately 15 to 20 km wide feature, located just north of Griquatown and south of Bushy Park. It has been...it seems that model ages become younger from the north towards Bushy Park (Duane et al. 1991). This is |  | | Journal (article/letter/editorial) | | Tübingen, Wilhelmstrasse 56, 72074 Tübingen, Germany 2 Department of Geosciences, The University of...Canada (Carignan et al., 1997) and the North German basin, Germany (Lüders et al., 2010). These are large-scale...veins from the Schwarzwald mining district in SW Germany. The Schwarzwald is a well-investigated area. Numerous...GEOLOGICAL SETTING The Schwarzwald (Fig. 1) in SW-Germany mainly consists of crystalline basement rocks,...Middle Triassic by the Rötton clay aquitard in the north. Middle Triassic (Muschelkalk) units, including |  | | Report (chapter) | | distance from the granite intrusion. Mineralogically, quartz, cordierite and potassium feldspar are present...changing distally to quartz, cordierite, muscovite, biotite and chlorite and finally quartz, muscovite and chlorite...length (Fig. 8). Otherwise the granite consists of quartz, biotite, plagioclase, muscovite and cordierite...bulk of the Paarl Pluton, west of Paarl (Fig. 2; Siegfried 1999; Geo-heritage Initiatives 2013). Downloaded...Paarl Pluton where the granite is well exposed (Siegfried 1993, 1999). Paarl Grey granite is exposed on |  | TSHIBUBUDZE, A., HEIN, K. A. A., PETERS, L. F. H., WOOLFE, A. J., McCUAIG, T. C. (2013) OLDEST U-PB CRYSTALLISATION AGE FOR THE WEST AFRICAN CRATON FROM THE OUDALAN-GOROUOL BELT OF BURKINA FASO. South African Journal of Geology, 116 (1) 169-181 doi:10.2113/gssajg.116.1.169 | Journal (article/letter/editorial) | | Gondo granite gneiss in Ghana at 2876 Ma, (3) Siegfried et al. (2009) from the Ifantayire granite gneiss...BF 1299 GoromGorom OUDALANGOROUOL BELT Essakane Mine 100 Mafic volcanic rocks with intercalated volcaniclastic...plagioclase, potassium feldspar and quartz (Figure 2b). The quartz crystals exhibit undulóse extinction...south and upper greenschist facies rocks in the north. SOUTH AFRICAN JOURNAL OF GEOLOGY 172 OLDEST...leticocratic layers that are dominated by plagioclase and quartz minerals (UTM, 30P 0811742: 1608135), (b) Photomicrograph |  | Borg, G., Karner, K., Buxton, M., Armstrong, R., Merwe, S. W. v. d. (2003) Geology of the Skorpion Supergene Zinc Deposit, Southern Namibia. Economic Geology, 98 (4) 749-771 doi:10.2113/gsecongeo.98.4.749 | Journal (article/letter/editorial) | | Halle-Wittenberg, Domstrasse 5, D-06108 Halle, Germany MIKE BUXTON, Exploration and Acquisitions Division...within the siliciclastic host rocks on the west and north. The nonsulfide ore minerals comprise predominantly...approximately 40 km north of the Orange River and some 15 km north-northwest of the Rosh Pinah mine in the southernmost...deposits (Page and Watson, 1976; van Vuuren, 1986; Siegfried and Moore, 1990). The present paper summarizes...the Martin-Luther University Halle-Wittenberg, Germany. The general geology of the region and the regional |  | | Journal (article/letter/editorial) | | Constraints from stable carbon isotopic compositions of quartz-hosted CO2-rich fluid inclusions Volker Lüders...nitrogen) isotope ratios of fluid inclusions in quartz from selected gold deposits in Ghana and Zimbabwe...in stable carbon isotopic compositions of CO2 in quartz-hosted fluid inclusions from Archean and Paleoproterozoic...high-density CO2-rich, water-poor inclusions hosted in quartz pebbles from the world-class Au-bearing conglomerate...GeoForschungsZentrum, Telegrafenberg, 14473 Potsdam, Germany 2 GeoZentrum Nordbayern, Universität Erlangen-Nürnberg |  | | Book | | Heights mine, of crystals as Roger Caillois (1913-1978) of Weardale, Co. Durham. Giant quartz crystals...Brazil) bringing a quartz crystal out of a quarry 5 C R Y S T A L S Calcite, Bigrigg mine, Egremont, Cumбria...of lava and i f the cooling is slow and uniform quartz crystals of varying sizes grow within these cavities...leads t o concentric layers of microcrystalline quartz within the cavity. This variety o f silica is known...and as growth becomes slower we find wellformed quartz crystals on finer-grained layers. We know that |  | Hurai, Vratislav, Blažeková, Michaela, Huraiová, Monika, Siegfried, Pete R., Slobodník, Marek, Konečný, Patrik (2021) Thermobarometric and geochronologic constraints on the emplacement of the Neoproterozoic Evate carbonatite during exhumation of the Monapo granulite complex, Mozambique. Lithos, 380. 105883pp. doi:10.1016/j.lithos.2020.105883 | Journal (article/letter/editorial) | | Michaela Blažeková, Monika Huraiová, Pete R. Siegfried, Marek Slobodník, Patrik Konečný PII: S0024-4937(20)30518-1...intersected by isopleths calculated from Ti-in-quartz and Zrin-rutile thermometers indicate fenite formation...the world, and include the Evate carbonatite in north-eastern Mozambique (Fig. 1), which shows clear evidence...spectroscopic data obtained from fluid inclusions in quartz-plagioclase-K-feldspar-phlogopite fenite-resembling...Ediacaran retrogression. Abundant fluid inclusions in quartz provide an unique opportunity for the determination |  | | Journal (issue) | | Schweiz CHF 10,50 Neue Calcite von der Elmwood Mine, Tennessee• Bizarre Pyrite vom Steinbruch Schretzmair...Prächtiger Neufund schöner Calcite von der Elmwood-Mine, Tennessee 46 Ullmannit & Gersdorffit - die zwei...Latrobe Nugget aus. Es wurde 1835 in der Mcivor Mine entdeckt und ist im Vergleich zu anderen Funden...Diese massive FluoritStufe konnte in der „Rogerley Mine" Mitte August geborgen werden. Jetzt warten aufwändige...Cremieu/Frankreich. 4,Azurit-Neufund von der Plaka Mine,Attika, in Griechenland. Höhe des Aggregats 2,3 |  | | Report (chapter) | | University of Wuerzburg, Am Hubland, D-97074 Wuerzburg, Germany (e-mail: hartwig.frimmel@uni-wuerzburg.de) Abstract:...example. Along those faults, an elongated, roughly north –south trending basement horst (Aurus Horst) developed...exhalative base-metal mineralization (Rosh Pinah mine and protore of the secondary Skorpion deposits)...of the Dom Feliciano volcanic arc towards the (north)west. Consequently, the upper Hilda Subgroup and...contains fragments of angular to sub-rounded vein quartz, granitoid, microgranite, gneiss, orthoquartzite |  | | Journal (article/letter/editorial) | | PP. 5 2 7 - 3 3 Fractures induced by shock in quartz and feldspar P. LAMBERT 2, rue des Jacinthes, Apt...processes in non-porous rocks consisting essentially of quartz and feldspar. Petrological and textural investigations...ways. In all cases, the density of fractures in quartz and feldspar increases with increasing pressure...Fracturing is more intense in feldspar than in quartz. Plane shock waves produced in laboratory scale...questions, restricting the study to the behaviour of quartz and feldspar in non-porous rocks. Arguments will |  | | Journal (article/letter/editorial) | | the new processes brought to such perfection in Germany. Quite a panoramic view is thus presented of Antigua...what do you expect to find up yonder?" "A gold-mine perhaps?" And so on, until the traveller is driven...in the sea and all that concerns it throughout Germany. The German Antarctic Expedition, which is under...Brazilian depression stretches further to the north-east than was formerly supposed; and the sample...Philippi, Ruser, Stehr, Vanhoffen, Werth. Berlin: Siegfried, Mittler und Sohn. 1902. This content downloaded |  | | Journal (issue) | | Without a Past By ROBERT HYATT 10 Lost Golden Eagle Mine By JOHN MITCHELL 12 Bottle Booty By FRANK TAYLOR...legends that have emerged from the western regions of North America. Two unsolved mysteries, unearthed in this...lost mine yarns, John Mitchell, which appeared originally in 1940 and 1941. Lost Golden Eagle Mine by...half way up the north side his attention was attracted to some pieces of milky white quartz that lay scattered...carried in his belt he broke several pieces of the quartz and found it to be matted together with large stringers |  | | Book | | FIRST AMERICAN EDITION Originally published in Germany as GESPRACH MIT DER ERDE Copyright by R. Piper...TRIP GERMANY THROUGH XVI Silesia Serpentine Granite XVII Rocks Under the Pillow XVIII Rhine Journey...Zechstein above Carboniferous xL Siebengebirge and Rhine xii Canyon of the Great Fish River, Southwest Africa...River, Southwest Africa xLut Southwest corner of Germany xLiv Experimental graben xLv Migrating strata...Profile at Eppichnellen 279 Fic. 20 Map of Germany 290 List of Figures and Table xi Fic. 21 |  | | Journal (article/letter/editorial) | | G. FISCHER, V . GAERTNER, HA.NTZSCHEL, WUNDT, SIEGFRIED, REINECK. - G. FISCHER, Mfinchen: SchluBworte...the South during Wesffalian times and migrates North from Stefanian until Lower Permian dying away just...on a porphyry hit in a drill hole of Northern Germany. FALKE, and in another article, BANK and BAMBAUER...leucogranitic type follows a quartz diorite complex. The firstnamed consists of huge quartz porphyry effusions...Swiss frontier describes tectonically imbricated quartz porphyries recently discovered in the Great St |  | Wall, F., Niku-Paavola, V. N., Storey, C., Muller, A., Jeffries, T. (2008) XENOTIME-(Y) FROM CARBONATITE DYKES AT LOFDAL, NAMIBIA: UNUSUALLY LOW LREE:HREE RATIO IN CARBONATITE, AND THE FIRST DATING OF XENOTIME OVERGROWTHS ON ZIRCON. The Canadian Mineralogist, 46 (4) 861-877 doi:10.3749/canmin.46.4.861 | Journal (article/letter/editorial) | | xenotime-(Y) on niobian rutile in hydrothermal apatite–quartz rocks associated with carbonatite at Kangankunde...rocks and carbonatites are also grouped with the quartz syenite at Oas (Fig. 1) (Woolley 2001). A similar...concentrated at the boundary between calcite and albite–quartz-rich, chlorite-bearing areas and is occasionally...inclusions (Fig. 4b) and, rarely, inclusions of quartz. Rarely tiny crystals of “thorite” occur at the...at Lofdal or in xenotime-(Y) from a hydrothermal quartz rock associated with carbonatite at Kangankunde |  | | Journal (article/letter/editorial) | | being in a more distal position at the Rosh Pinah mine, revealed a primary sedimentary origin for most...used to infer a syn-sedimentary ore formation (Siegfried and Moore, 1990). On the other hand, intense silicification...compared and contrasted with those from the Rosh Pinah mine. Furthermore, comparison between samples taken at...relative to a volcanic centre, identified about 20km north of Rosh Pinah, are distinguished. The proximal facies...18km north-northwest of Rosh Pinah, representing the proximal facies, and (ii) the Rosh Pinah mine, representing |
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