For Rachel: Best regards, thanks a lot and goodbye, Rachel! From my first paper in Am Min to the last one I could rely on your capable and prompt handling and solving of my small (and not so small) problems.... It was a constant: I cry for help at any time and I get your answers within the following 2-3 hours independent of day and time. I am not kidding, but I told my husband (20 years ago) - I do not know when Rachel is sleepling - I always get answers immediatly.... all the best Monika Prof. Dr. Monika Koch-Müller Sektion 3.6 Chemistry and Physics of Earth Materials Tel+49(0) 331-6264-1492 +49(0) 176-21544992 e-mail: mkoch@gfz-potsdam.de; mokomue@yahoo.de ________________________________________ Helmholtz-Zentrum Potsdam Deutsches GeoForschungsZentrum - GFZ Stiftung des öff. Rechts Land Brandenburg Telegrafenberg, D-14473 Potsdam Germany https://www.gfz-potsdam.de/en/sec36