need help identifying white mineral Rock please help

[Jaykey3]

I need help identifying this white Rock that may be some sort of perlite not sure it was given to me as a gift from a rock collector.

Thanks for the help

 

[hokd4life]

Looks like deteriorayed oyster shell

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[Upnorth42]

Yeah those are sea shells.

 

[CRUSADER]

Looks like deteriorayed oyster shell

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[Jaykey3]

Thanks for the help

 

[bradyboy]

are you sure you submitted the correct picture?
I don't see a rock, I see shells in a bowl