Geoarchive
phycodic quarzite
Hainberg (Thuringia germany)
Meura (Thuringia germany)
Steinach (Thuringia germany)
History of the document:
First version from 2/25/2000
<http://members.aol.com/phycodea/phycodea/
phycodea.htm
>
is not available in the internet any more.
Updated 10/31/2008
Translated 6/162010 G. Becker