 | | Journal (article/letter/editorial) | | western part of the Rheinisches Schiefergebirge, Germany L. Krahn ~, A. Baumann 2 i Geologisches Landesamt...Nordrhein-Westfalen, De-Greiff-Strasse 195, D-47803 Krefeld, Germany 2Zentrallaboratorium fiir Geochronologie, Institut...Wilhelms-Universitiit, Corrensstrasse 24, D-48149 Mfinster, Germany Received: 2 February 1994/Accepted: 7 August 1995...there are transitions from lenticular ore bodies to quartz veins containing only traces of mineralization...tetrahedrite/freibergite (11 31 wt.-% Ag). Gangue minerals are quartz and siderite. Post-Variscan ore veins in Paleozoic |  | | Journal (article/letter/editorial) | | Geoinstitut, Universi~t Bayreuth, 95440 Bayreuth, Germany 2Research School of Earth Sciences, Australian...was investigated at 1 atm via additions of SiO2 (Quartz), Mg2SiO4 (Forsterite), and Na2SiO3 (Na-metasilicate)...fugacity, and pressure. Three components, SiO2 (Quartz), Mg2SiO4 (Forsterite), and Na2SiOa (Na-metasilicate)...in high-density alumina crucibles (FRIATEC Friedrichsfeld AL 23 T M ) in a Naber box furnace (MoSi2)...powdered oxide component in separate experiments (Quartz, Forsterite, and Na-metasilicate) through a 1.3 |  | | Journal (article/letter/editorial) | | UniversithtBayreuth,Postfach 101251, W-8580 Bayreuth,Germany Received November 3, 1992/ Revised, accepted March...dependence up to this pressure. This is opposite to quartz, which has a positive thermal diffusivity pressure...25 mm consists of sintered MgO obtained from Friedrichsfeld G m b H (DEGUSSIT MG25). The generated pressure...temperature. It was also calibrated at 1470 K using the quartz-coesite transition in SiOz (Boyd and England 1959)...be inferred from the thermal anomaly observed in quartz at the same pressure condition near 880 K, corresponding |  | Ertel, W., O’Neill, H.St.C., Sylvester, P.J., Dingwell, D.B., Spettel, B. (2001) The solubility of rhenium in silicate melts: Implications for the geochemical properties of rhenium at high temperatures. Geochimica et Cosmochimica Acta, 65 (13) 2161-2170 doi:10.1016/s0016-7037(01)00582-8 | Journal (article/letter/editorial) | | Geoinstitut, Universität Bayreuth, D 95440 Bayreuth, Germany Research School of Earth Sciences, Australian National...Max Planck Institut für Chemie, D 55020 Mainz, Germany 2 (Received July 18, 2000; accepted in revised...Geochemie, Universität München, D 80333 München, Germany. 2161 2162 W. Ertel, et al. Fig. 1. Comparison...25 min in air in an Al2O3 crucible (Friatec, Friedrichsfeld). ⬃50 g of the resulting silicate melt (anorthite-diopside...Max Planck Institute for Cosmochemistry (Mainz, Germany) for INAA analyses. The irradiations were performed |  | | Journal (issue) | | Elisabethszell, a Locality for Modest Collectors. Quartz crystals of widely differing forms, e.g. ideal...near Elisabethszell in the Bavarian Forest. The quartz crystals arise from fissure fillings which are...Gediegen Silber, dendritisch und skeleuanig. Ojuela Mine/Durango/Mexiko. Größe der Stufe 15x 12 mm. Sammlung:...Quartiersuche zu unterbrechen und erst einmal auf Mine- bung vorkommen. Man kann die Privatsammlung von...Verbreitung: Die Familie Astarti- den, ßislich und Friedrichsfeld. dae erscheint schon im Devon. die Allgemeines: |
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