He works for a large chemical company in Germany. After seeing mineral crystals during holidays in the Alps he went on to become interested in Scandinavian pegmatites, the Langban-type deposits, and finally the alkaline complex around the Langesundsfjord in Norway. From there his interest for alkaline localities in general grew until he now has more than 10,000 specimens, and about 2,200 other different minerals. Check out the web site for details of the collection. In 2001 Wilfried made a collecting trip to Greenland, landing at Narsarsuaq, seen in the left hand photograph.