Message Index Start New Topic Photo Gallery FAQ and Use Tips Bob's Rock Shop

Posted in response to from Harry Dschaak on October 17, 2011 at 02:53:45:

Re:

See if you can find any pictures of optical calcite (sometimes called Iceland spar) It's hard to tell from your photo if your specimens have the characteristic birefringence, and I've never seen any with rounded edges, but the flatness and clarity are very typical of some naturally occurring calcites.

From Adelaide - October 19, 2011 at 03:56:00
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Message: 70004



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Message Index Start New Topic Photo Gallery FAQ and Use Tips Bob's Rock Shop

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