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Pectolite? from Maoping Quarry, Wuyishan, China
  
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Jordi Fabre
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PostPosted: Nov 29, 2020 11:01    Post subject: Pectolite? from Maoping Quarry, Wuyishan, China  

Volkmar Stingl wrote:

Mineral: Pectolite (?), Fluorite
Locality: Maoping Quarry, Wuyishan, Nanping Prefecture, Fujian Province, PR China
Dimensions: 6 x 4 cm
Description: The assumed Pectolite has not been analyzed, therefore the question mark.




20201128_141103.jpg
 Mineral: Pectolite?
 Locality:
Maoping Quarry, Wuyishan, Nanping Prefecture, Fujian Province, China
 Dimensions: 6 x 4 cm
 Description:
 Viewed:  2127 Time(s)

20201128_141103.jpg


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Jordi Fabre
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PostPosted: Nov 29, 2020 11:03    Post subject: Re: Pectolite? from Maoping Quarry, Wuyishan, China  

Impossible to be sure without a proper analysis Volker.
Anyway, it looks to me more like a member of the Wollastonite Group (Tremolite or Wollastonite) than a Pectolite
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Volkmar Stingl




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PostPosted: Nov 29, 2020 11:15    Post subject: Re: Pectolite? from Maoping Quarry, Wuyishan, China  

Hello Jordi, thank you for your idea. I will see if I can get an analysis at our university (as soon as I am allowed to go there due to the actual restrictions). I will let you know about the result.

Volkmar
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Bob Carnein




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PostPosted: Nov 29, 2020 11:27    Post subject: Re: Pectolite? from Maoping Quarry, Wuyishan, China  

I agree with Jordi, but, in any case, doing some analytical work would be justified.
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PostPosted: Nov 29, 2020 11:42    Post subject: Re: Pectolite? from Maoping Quarry, Wuyishan, China  

As an additional information (I checked my old notices now): The white crystals/crystal fans are filling narrow joints in a rhyolite. No other mineralization could be found there.

So, I will try to get an analysis.

Thank you both.
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PostPosted: Nov 29, 2020 12:03    Post subject: Re: Pectolite? from Maoping Quarry, Wuyishan, China  

When I blow up the image, I see what looks like purple quartz in the lower portion of the sample. Is that real, or is it my imagination playing tricks?
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PostPosted: Jan 20, 2021 04:24    Post subject: Re: Pectolite? from Maoping Quarry, Wuyishan, China  

After nearly 2 months I got the result of an XRD analysis. It is laumontite, and the purple parts are fluorite (as I already assumed).

Best wishes and a good health,
Volkmar
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