JOGS International Gem Show April 7-18 Tucson Expo Center
Welcome to the GemologyOnline.com Forum
A non-profit Forum for the exchange of gemological ideas
It is currently Sat Feb 27, 2021 11:50 am

All times are UTC - 4 hours




Post new topic Reply to topic  [ 3 posts ] 
Author Message
 Post subject: Is this coral?
PostPosted: Sun Mar 08, 2015 8:57 am 
A friend found these at 4600 ft elevation in the mtns about 30 miles east of Bakersfield, Ca. Can you tell if they are coral? She says "This was found in Tehachapi Ca, And is scattered all over this hill and also imbedded in clay and Volcanic rocks.Does not seem to leave color,on scratch test,It's Crystallized also seems fibrous but can't scratch or flake with nail or knife,Light emits thru it, At first I thought it was common Opal. But now i have no Idea.Any thoughts on this would be great And thank you in advance. Also all Crystals start from center and have rings some blue others yellow to rust color, And it came out of the volcanic/lava rocks, is there any test to confirm what it is. thank you again."ImageImageImage


Top
  
Reply with quote  
 Post subject: Re: Is this coral?
PostPosted: Sun Mar 08, 2015 1:48 pm 
Offline
Site Admin
User avatar

Joined: Sun Oct 16, 2005 12:22 pm
Posts: 20628
Location: San Francisco
Appears to be.


Top
 Profile  
Reply with quote  
 Post subject: Re: Is this coral?
PostPosted: Sun Mar 08, 2015 3:04 pm 
Offline
Moderator
User avatar

Joined: Mon Apr 02, 2012 9:31 pm
Posts: 3702
Location: North Carolina
I'm not 100% sure. It kind of looks more like an orbicular rhyolite to me, though it's hard to tell from the photos.

_________________
https://www.etsy.com/shop/angryturtle


Top
 Profile  
Reply with quote  
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 3 posts ] 

All times are UTC - 4 hours


Who is online

Users browsing this forum: No registered users and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group
Gemology Style ported to phpBB3 by Christian Bullock