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Chalcedony?
  
  Index -> What is it? - Where is it from?
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R Saunders




Joined: 28 Jul 2018
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PostPosted: Aug 23, 2021 08:23    Post subject: Chalcedony?  
I acquired this with no information. I have been told it is most likely Chalcedony. Fairly light weight and has a bit of a waxy feel. I would like to know where it may have come from, and what has caused to shape or formation of it.

20210728_131222.jpg
 Mineral: Chalcedony
 Locality:
[unknown locality]
 Dimensions: 125mm
 Description:
cut surface
 Viewed:  2601 Time(s)

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20210728_131439.jpg
 Description:
side view
 Viewed:  2608 Time(s)

20210728_131439.jpg
20210728_131459.jpg
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20210728_131459.jpg
20210728_153050.jpg
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agatized
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20210728_153050.jpg
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James Catmur
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PostPosted: Aug 23, 2021 10:30    Post subject: Re: Chalcedony?  
Chalcedony is a form of microcrystalline quartz and this looks like quartz, so it might contain chalcedony. I have no idea where it is from as it could be from millions of different places
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R Saunders




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PostPosted: Aug 23, 2021 10:54    Post subject: Re: Chalcedony?  
James Catmur wrote:
Chalcedony is a form of microcrystalline quartz and this looks like quartz, so it might contain chalcedony. I have no idea where it is from as it could be from millions of different places


Thanks, it is the irregular surface that is interesting. Nothing to indicate petrified wood, or tree rings etc.
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