Hans Ulrich Bambauer

Isotype Borate Seltener Erden der Zusammensetzung SE2O33 B2O3

* XXXI. Mitteilung iiber Chalkogenocarbonate. XXX. Mitteilung: GaTTOW G., u. U. GSXWA~T~: Z. anorg, allg. Chem. im Druck. [I] GAT~OW, G., u. V. HA~NI<AMM: Angew. Chem. 78, 334 (1966); Angew. Chem. internat. Edit. 5, 316 ( t 9 6 6 ) . [2] Ca~ACCm, L., .~{. NARDELLI tl. A. VILLA: Chem. Commun. 1966, 44/. [3] Das in tier Literatur als gelb beschriebene Ammoniumdithioearbamat ist verunreiuigt. [4] Das gelbe NH, [SC(S)(NH~)] wandeIt sich hei etwa 53 ~ in die Hoehtemperaturmodifikation urn; die Aktivierungsenergie der Umwandlung der 2. Stufe des Sfiurezerfalls [1] betr/~gt 18,9• 0,6 k c a l / M o l . [5] GATTOW, G., u. H. PIOTTER: Z. anorg, allg. Chem. 336, t (1965).

Beobachtungen über Lamellenbau an Bergkristallen

A mimetic s t ructure consisting of optically weakly biaxial lamellae was observed in clear colourless quar tz crystals f rom Madagascar in those a reas which show an enrichment in the t race elements Al, Li and H . Different t ypes of lamellae can be established on the basis of their optics, colouration on irradiation and orientation with respect to t h e morphology. Several observat ions suppor t a secondary origin for the lamellae.

From the Fortschritte der Mineralogie to the European Journal of Mineralogy: a case history

Fortschritte der Mineralogie , the journal of the Deutsche Mineralogische Gesellschaft (DMG), was founded in 1911. Until 1988, a total of 66 volumes appeared, although with some interruptions due to World Wars I and II. In contrast to other mineralogical periodicals the Fortschritte published predominantly review articles in all fields of mineralogy. From 1960 on part of the contributions were written in English, thus conforming to the trend towards English as a lingua franca in natural sciences, including geosciences. On August 1, 1988, the Deutsche Mineralogische Gesellschaft, the Societe francaise de Mineralogie and the Societa Italiana di Mineralogia e Petrologia founded the European Journal of Mineralogy (EJM) and, at the same time, decided to discontinue their own traditional journals; the same holds true for the Sociedad Espanola de Mineralogia who joined in editing the EJM in 2004. During the two decades of existence, nearly 1900 paper have been published by the EJM in the fields of crystallography (18 %), systematic, regional and applied mineralogy (39 %) and petrology (43 %). The overwhelming majority of the papers (more than 80 %) was written by European authors, i.e. 22 % from Italy, 20 % from Germany, 11 % from France, 5 % from the United Kingdom, 3% from Spain, Switzerland, and Austria, resp., and 5 % from Russia. The USA contributed 5 % of the papers, Canada 3 % and Japan 2.5 %. The EJM has established itself as an internationally respected, high rank European periodical in all fields of mineralogy with an impact factor ranging from 1.1 to 1.45.

Environmental Mineralogy. Radiation Mineralogy

Mining and smelting have been the cause of major pollution problems since the earliest days of these activities. However, significant increases in waste production occurred in the Middle Ages, when metallic mining industries in north and central Europe became capable of extracting ore from greater and greater depths. The extent of this evolution was summarized by Georgius Agricola in his De re metallica, published in 1556. Mercury, which readily forms amalgams with gold, silver, and many other metals, became intensively mined (Fig. 65). Although health hazards have long been known — inhaled mercury vapors affect the central nervous system and the peripheral nerves or cause behavioral disorders — primitive uses of mercury have persisted until recent years, for example during the present gold rush in Brazil (Lacerda et al. 1995).

Geologisch-Petrographische Untersuchungen An Permischen Magmatiten im Gebiet zwischen Kirn (Nahe) und Winterburg (Nordflügel der Nahemulde)

ZusammenfassungAuf dem Nordflügel der Nahemulde treten zwischen Kirn/Nahe und Winterburg eine ganze Reihe von Erscheinungsformen des permischen Saar-Nahe-Vulkanismus auf, und zwar in Form von Lavaserien der Grenzlagergruppe des Oberrotliegenden und als gangförmige Bildungen in den Sedimenten des Unterrotliegenden. Auch sind mehrere Schlote zu beobachten. Im Vergleich zur Umgebung von Idar-Oberstein (SW) fällt die wesentlich geringere oberflächliche Verbreitung und viel kleinere Zahl der viel weniger mächtigen Lavadecken auf. Zwischen dem Auftreten der Gänge und dem Verlauf von Störungen germanotyper Bruchfaltentektonik ist ein Zusammenhang zu erkennen.