wwp@yahoogroups.com:
Re: 11 hours until "History" starts ...
Erik Krause 2011-Sep-18 16:20:00
Am 18.09.2011 02:19, schrieb Bostjan Burger:
> It is more metal-violet. Acctually variations (also bluish) - layers
> of a mananese oxide on a dolomite.
Interesting! So it isn't the stone itself but only a coating. I know
green and brown variants of mangan oxid. Have to ask my brother (a
geologist) how this forms...
best regards and congrats to this extraordinary pictures.
--
Erik Krause
http://www.erik-krause.de