Dear Chandrashekhar Phadke.

Carbonate shells usually remain carbonatic, only that aragonite often
recrystallizes to calcite. Sometimes there is no way to distinguish them
except by their geographic and/or stratigraphic context or direct
dating. That still leaves the question when is a fossil a fossil?

Sven Nielsen

Am 2014-01-04 05:33, schrieb chandrashekhar phadke:
> Dear friends ,
>
> How to distinguish between the fossil seashells and the normal
> seashells ? Whether fossil seashells give effervescence reaction to
> the acid ? If during fossilization, calcium is replaced by some other
> elements it may not give acid reaction. Would like to have comments
> from the experts.
>
> Chandrashekhar Phadke

----------------------------------------------------------------------
[log in to unmask] - a forum for informal discussions on molluscs
To leave this list, click on the following web link:
http://listserv.uga.edu/cgi-bin/wa?SUBED1=conch-l&A=1
Type your email address and name in the appropriate box and
click leave the list.
----------------------------------------------------------------------