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Amethyst and...?
  
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Linus




Joined: 06 Nov 2015
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PostPosted: Jun 19, 2019 16:17    Post subject: Amethyst and...?  

Hello everyone!
A customer brought this oddity into my shop the other day, a natural amethyst crystal with natural faces all around, but with an orange spherical "bubble" 9mm in diameter several mm's below the face of the crystal. On inspection, the bubble lies well below the crystal face and appears to have a chilled, light-colored margin beneath it (deeper into the crystal). Its hard to get detail on the contents of the bubble, but I think the orange is caused by a cluster of needle-like crystals. My thinking is that this might well have been an iron-rich fluid inclusion that has since dessicated leaving crystalline goethite(?) or similar behind. Any other thoughts?



20190619_134940[1].jpg
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unusual orange bubble!
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20190619_134940[1].jpg


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Mathias




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PostPosted: Jun 20, 2019 11:18    Post subject: Re: Amethyst and...?  

Could be Cristoballite.
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Linus




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PostPosted: Jun 21, 2019 17:26    Post subject: Re: Amethyst and...?  

Thanks, Matias, thats a good idea!
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