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L. Lengauer, N. Hrauda, Uwe Kolitsch, R. Krickl, and E. Tillmanns, in honour of Friedrich Johann Karl Becke [December 31, 1855 Praha, Bohemia (Prague, Czech Republic) – June 18, 1931 Wien, Austria]. Becke was professor of mineralogy at the University of Czernowitz (Cernauti, Romania), at the German University (Praha), and the University of Wien. Becke was both a crystallographer and petrologist and in the latter field greatly influenced optical mineralogical theory from many important innovations. The Becke Line determination method of refractive index is named for him. Becke was also an important author and editor.","2025-08-11 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(2009): Friedrichbeckeit - Ein neues Mineral vom Bellerberg. Mineralien-Welt, 20(5), 7. [Brief portrait in German]",{"id":268,"year":29,"html":269,"doi":270},16920,"Lengauer, C. L., Hrauda, N., Kolitsch, U., Krickl, R., Tillmanns, E. (2009) Friedrichbeckeite, K (□0.5Na0.5)2 (Mg0.8Mn0.1Fe0.1)2 (Be0.6 Mg0.4)3 [Si12O30], a new milarite-type mineral from the Bellerberg volcano, Eifel area, Germany. \u003Ci>Mineralogy and Petrology\u003C\u002Fi>,  96 (3) 221-232 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1007\u002Fs00710-009-0050-9'>doi:10.1007\u002Fs00710-009-0050-9\u003C\u002Fa> \u003Ca target='_blank' href='https:\u002F\u002Frruff.info\u002Frruff_1.0\u002Fuploads\u002FMinPet96_221.pdf' class='refpdflink'>\u003C\u002Fa>","10.1007\u002Fs00710-009-0050-9",{"id":272,"year":29,"html":273,"doi":274},396170,"Piilonen, P. C., Poirier, G., Tait, K. T. 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