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Ionic conductivity in gem-quality single-crystal alkali feldspar from the Eifel : temperature, orientation and composition dependence | El Maanaoui, Hamid; Wilangowski, Fabian; Maheshwari, Aditya; Wiemhöfer, Hans-Dieter; Abart, Rainer; Stolwijk, Nicolaas A. | 2016 | |
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Barium-rich sanidine megacrysts form the West Eifel (Germany) | Riley, Teal R.; Bailey, D. Ken | 2004 |