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Date: | Sat, 4 Jan 2014 13:56:05 -0500 |
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I have some books to donate to COA convention, where do I send them?
Sent from Jordan's iPhone
> On Jan 4, 2014, at 7:50 AM, nielsen <[log in to unmask]> wrote:
>
> 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
>
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