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




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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:  548 Time(s)

20210728_131222.jpg



20210728_131439.jpg
 Description:
side view
 Viewed:  549 Time(s)

20210728_131439.jpg



20210728_131459.jpg
 Description:
 Viewed:  551 Time(s)

20210728_131459.jpg



20210728_153050.jpg
 Description:
agatized
 Viewed:  550 Time(s)

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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