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<p>[QUOTE=&quot;Bronwen, post: 376958, member: 5833&quot;]That is most likely calcite alabaster.&nbsp; Would have suggested onyx marble as a possibility, but do not see any stratification.&nbsp; All these things started out with the calcium from the shells of tiny ocean organisms,&nbsp; Just depends on what happened to the deposits afterward.[/QUOTE]</p><p><br /></p>

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