1. Hans G. Hauri KG Mineralstoffwerke, Bergstrasse 114, 79268 Bötzingen, Germany
2. ÌSOR Iceland GeoSurvey, Grensásvegur 9, 108 Reykjavik, Iceland
3. † Special collection papers can be found online at http://www.minsocam.org/MSA/AmMin/special-collections.html.
4. Institute for Technology of Nuclear and Other Mineral Raw Materials (ITNMS), Franshe d' Epere 86, 11000 Belgrade, Serbia