|
Post by albionfireandice on Nov 23, 2017 15:20:07 GMT -5
Hi guys, This is a Botswana Agate tumblestone I bought in a 1KG bag from a wholesaler; it doesn't look especially like classic Botswana Agate to me but thats a whole different story. It has an inclusion of coral or something similar in. Looks like it might be Hexagonaria or similar - are there any coral experts on here who could help me narrow it down? I've never seen anything like this before and I'm very taken with it. Thank you, John
|
|
Deleted
Deleted Member
Member since January 1970
Posts: 0
|
Post by Deleted on Nov 23, 2017 15:28:35 GMT -5
I wonder whether it might be an orb of cristobalite (one of several minerals that can also form those radiating, acicular patterns). If coral, I'd expect more than just a single polyp. In addition, Botswana agate formed in basaltic flows, so coral is unlikely. Very interesting piece, no matter what it turns out to be.
|
|
|
Post by albionfireandice on Nov 23, 2017 15:40:27 GMT -5
I suspect I need to get some closer in photos - it certainly looks more fossil than mineral. Unfortunately I don't have a macro lens - will work something out.
|
|
|
Post by amygdule on Nov 23, 2017 16:32:17 GMT -5
I would say that it looks like a button of sagenite.
|
|
|
Post by fernwood on Nov 23, 2017 16:35:34 GMT -5
Beautiful whatever it is. Not familiar with the host stone, so cannot provide any ID info.
|
|
Deleted
Deleted Member
Member since January 1970
Posts: 0
|
Post by Deleted on Nov 23, 2017 16:56:08 GMT -5
I would say that it looks like a button of sagenite. Could it also be a zeolite? I'm sincerely curious.
|
|
|
Post by albionfireandice on Nov 23, 2017 17:15:11 GMT -5
I think I definitely need to get a closer up photo, as it is quite deep and doesn't look crystalline in origin. I'd say it's 3-5MM deep and a few MM wide. Will try and get a photo tomorrow AM.
|
|
|
Post by amygdule on Nov 23, 2017 17:24:02 GMT -5
I would say that it looks like a button of sagenite. Could it also be a zeolite? I'm sincerely curious. Yes Sagenite could be a pseudomorph of a zeolite. It's not uncommon to find in the volcanics around here. I wonder whether it might be an orb of cristobalite (one of several minerals that can also form those radiating, acicular patterns). If coral, I'd expect more than just a single polyp. In addition, Botswana agate formed in basaltic flows, so coral is unlikely. Very interesting piece, no matter what it turns out to be.
|
|
|
Post by albionfireandice on Nov 24, 2017 11:10:21 GMT -5
|
|
|
Post by amygdule on Nov 25, 2017 17:47:43 GMT -5
Sagenite Radiating blobs in Agate.
|
|