TY - JOUR A1 - Ertl, Andreas A1 - Giester, Gerald A1 - Schüssler, Ulrich A1 - Brätz, Helene A1 - Okrusch, Martin A1 - Tillmanns, Ekkehart A1 - Bank, Hermann T1 - Cu- and Mn-bearing tourmalines from Brazil and Mozambique: crystal structures, chemistry and correlations JF - Mineralogy and Petrology N2 - Cu- and Mn-bearing tourmalines from Brazil and Mozambique were characterised chemically (EMPA and LA-ICP-MS) and by X-ray single-crystal structure refinement. All these samples are rich in Al, Li and F (fluor-elbaite) and contain significant amounts of CuO (up to ~1.8 wt%) and MnO (up to ~3.5 wt%). Structurally investigated samples show a pronounced positive correlation between the distances and the (Li + Mn\(^{2+}\) + Cu + Fe\(^{2+}\)) content (apfu) at this site with R\(^2\) = 0.90. An excellent negative correlation exists between the distances and the Al\(_2\)O\(_3\) content (R\(^2\) = 0.94). The samples at each locality generally show a strong negative correlation between the X-site vacancies and the (MnO + FeO) content. The Mn content in these tourmalines depends on the availability of Mn, on the formation temperature, as well as on stereochemical constraints. Because of a very weak correlation between MnO and CuO we believe that the Cu content in tourmaline is essentially dependent on the availability of Cu and on stereochemical constraints. KW - mineralogy KW - Brazil KW - Mozambique Y1 - 2013 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-127296 VL - 107 IS - 2 ER - TY - JOUR A1 - von Gehlen, K. A1 - Matthes, S. A1 - Okrusch, Martin A1 - Richter, P. A1 - Röhr, C. A1 - Schüssler, Ulrich T1 - Metapyroxenite in der KTB-Vorbohrung N2 - No abstract available. KW - Kontinentales Tiefbohrprogramm der Bundesrepublik Deutschland Y1 - 1990 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-87539 ER - TY - CHAP A1 - Kreuzer, Hans A1 - Vejnar, Zdenek A1 - Schüssler, Ulrich A1 - Okrusch, Martin A1 - Seidel, Eberhard T1 - K-Ar dating of the last metamorphic events in different tectonic units of the western margin of the Bohemian Massif N2 - K-Ar dating on hornblendes and micas from the TepläDomazlice zone revealed a pattern of dates which significantly deviates from the mid-Carboniferous to early Permian one that is found in the adjacent low-pressure metamorphic Moldanubian and Saxothuringian. Especially for the Mariänske Läzne metabasic complex, confirming early Czech determinations, the dates resemble the early Devonian pattern determined for the Münchberg Gneiss Massif and the Erbendorf-Vohenstrauß zone of northeastern Bavaria. This supports the idea that all three units are remnants of a huge complex which suffered a metamorphic overprint under medium-pressure conditions, probably in the early Devonian. Streng rejuvenation is found in the southern part of the Teplä-Domailice zone by which micas and even two hornblendes were reset to mid-Carboniferous ages. According to the geological setting, part of the apparently preDevonian dates may be explained by inherited argon from earlier metamorphic and magmatic events, e.g. the high-pressure metamorphism documented in eclogitic relics. However, excess argon, caused by the mid-Carboniferous overprint cannot be excluded. KW - Geochemie Y1 - 1988 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-87527 ER - TY - CHAP A1 - Schüssler, Ulrich A1 - Vejnar, Z. A1 - Okrusch, M. A1 - Rose, S. A1 - Seidel, E. T1 - Geochemistry of Metabasites and gabbroic rocks from the Tepla-Domazlice zone N2 - Various amphibolites, metagabbros and eclogitic relics of the Mariänske Läzne complex, and amphibolites from the Cernä Hora Massif exhibit an uniform geochemical character which compares weil with modern mid-ocean ridge basalts. Geochemically these metabasites are similar to the amphibolites of the Myto area and to schistose, partly striped amphibolites of the neighbouring Tirschenreuth-Mähring Zone and the Erbendorf-Vohenstrauss Zone (Bavaria). Greenschists and amphibolites from the Domazlice metamorphic complex show an alkaline-basaltic tendency conforming to modern within-plate basalts or basalts from anomalaus midocean ridge segments. In their chemical character, these metabasites compare weil with the flaseramphibolites of the Erbendorf-Vohenstrauss Zone. Fine-grained amphibolites in the Warzenrieth area and (gabbro-) amphibolites in the Blätterberg-Hoher Bogen area show normal MORB character. The metamorphosed gabbroic rocks in the southern part of the Neukirchen-Kdyne (meta-) igneous complex are subalkaline - tholeiitic and exhibit a magmatic differentiation trend. They differ from the neighbouring amphibolites by generally lower contents of incompatible elements. KW - Geochemie Y1 - 1988 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-87511 ER - TY - JOUR A1 - Schüssler, Ulrich A1 - Wilhelm, G. T1 - Mikrosondenanalytische Untersuchungen eines Kupfer-Rollsiegels des frühen 3. Jahrtausends v. Ch. vom Tell Karrana-3 bei Mosul, Irak N2 - No abstract available KW - Mikrosonde KW - Analyse Y1 - 1992 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-86747 ER - TY - CHAP A1 - Kreuzer, H. A1 - Henjes-Kunst, F. A1 - Seidel, E. A1 - Schüssler, Ulrich A1 - Bühn, B. T1 - Ar-Ar spectra on minerals from KTB and related medium-pressure units N2 - No abstract available. KW - Kontinentales Tiefbohrprogramm Y1 - 1993 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-86731 ER - TY - JOUR A1 - Schüssler, Ulrich A1 - Talarico, F. T1 - Granulite facies rocks from the Ross orogenic belt, Northern-Victoria-Land, Antarctica N2 - no abstract available KW - Geographie Y1 - 1991 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-81889 ER - TY - JOUR A1 - Schüssler, Ulrich A1 - Okrusch, M. A1 - Patzak, M. A1 - Müller, P. A1 - Kreuzer, H. T1 - The polyphase thermal history of the Erbendorf-Vohenstrauß (ZEV) and the Erbendorf Greenschist (EGZ) zones of NE Bavaria in the light of Ar-Ar spectra N2 - no abstract available KW - Erbendorf KW - Vohenstrauß Y1 - 1990 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-81862 ER - TY - JOUR A1 - Schüssler, Ulrich A1 - Skinner, D. N. B. A1 - Roland, N. T1 - Basischer bis intermediärer Plutonismus im NW-Teil des Wilson Terrane, Nordvictorialand, Antarktis N2 - no abstract available KW - Wilson Terrane KW - Nordvictorialand KW - Antarktis Y1 - 1990 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-81850 ER - TY - JOUR A1 - Schüssler, Ulrich A1 - Kreuzer, H.. A1 - Vejnar, Z. A1 - Okrusch, M. A1 - Seidel, E. A1 - Kopecký, L. A1 - Patzak, M. T1 - Geochemische Untersuchungen und K-Ar Datierungen in der Zone Tepl-Taus N2 - no abstract available KW - Tepl-Taus Y1 - 1989 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-81840 ER -