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adularia locale?
  
  Index -> FOR BEGINNERS: What is it? Where is it from?
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Frank Perry




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PostPosted: Mar 10, 2023 22:06    Post subject: adularia locale?  

I purchased this adularia with some chlorite coating years ago. It has been stored away and I have lost any location information. Don't even remember where I purchased it.

The longest dimension is 4 cm and it is a well formed crystal.

No real idea of where it is from. When I unpacked it recently, I vaguely remembered Spain, but I don't see any sites in Spain with anything similar. My best guesses would be somewhere in Europe, possibly the USA, but I'm just speculating.

Any thoughts on where this might be from?



20230310_191432.jpg
 Mineral: Adularia
 Description:
 Viewed:  10460 Time(s)

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20230310_191351.jpg
 Mineral: Adularia
 Description:
 Viewed:  10461 Time(s)

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20230310_191318.jpg
 Mineral: Adularia
 Dimensions: 4 cm
 Description:
 Viewed:  10450 Time(s)

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20230310_191801.jpg
 Mineral: Adularia
 Description:
 Viewed:  10461 Time(s)

20230310_191801.jpg



20230310_191518.jpg
 Mineral: Adularia
 Description:
 Viewed:  10451 Time(s)

20230310_191518.jpg



20230310_191546.jpg
 Mineral: Adularia
 Description:
 Viewed:  10452 Time(s)

20230310_191546.jpg


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Philippe Durand




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PostPosted: Mar 11, 2023 00:41    Post subject: Re: adularia locale?  

for me it looks like Alpine material. (Switzerland, France, Italy, Austria,...?.)
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Jesse Fisher




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PostPosted: Mar 11, 2023 01:19    Post subject: Re: adularia locale?  

The specimen is typical for adularia with chlorite coating from an alpine-cleft-type metamorphic environment. The best known of these are in the Swiss/French/Austrian alps, but also from the Alchuri area in the Northern Areas of Pakistan. Without further information it would be difficult to get more specific.
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James Catmur
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PostPosted: Mar 11, 2023 06:27    Post subject: Re: adularia locale?  

Not Spain, but impossible to say from what I can see
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Jordi Fabre
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PostPosted: Mar 11, 2023 06:47    Post subject: Re: adularia locale?  

I would say from the Canton of Uri, Switzerland, but is just a guess:
https://www.mineralogia.es/index.php?searchterms=adularia%20suiza&searchauthor=-&level=search
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Volkmar Stingl




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PostPosted: Mar 11, 2023 09:51    Post subject: Re: adularia locale?  

Good guess, but similar pieces also come from Valais or from some places in the Hohe Tauern mountains in Austria. But Canton Uri was my first thought,too. Nearly impossible to decide...
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Frank Perry




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PostPosted: Mar 11, 2023 16:55    Post subject: Re: adularia locale?  

I've been reading the responses (thank you) and thinking about this, and I now vaguely recall noting that it was from Italy when I purchased it.

Is it just as likely (or less likely?) that it might have come from the Italian Alps somewhere near the Swiss border?
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Bob Morgan




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PostPosted: Mar 11, 2023 17:11    Post subject: Re: adularia locale?  

Nice twin too.
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Jesse Fisher




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PostPosted: Mar 11, 2023 17:16    Post subject: Re: adularia locale?  

Could possibly be from the Sudtirol in the Trentino-Alto Adige region.
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alfredo
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PostPosted: Mar 12, 2023 14:54    Post subject: Re: adularia locale?  

I think Switzerland would be the most likely, but there are many other possibilities in the Alps and the Himalayas, so the only thing one could say with certainty is "Alpine-type vein".
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Riccardo Modanesi




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PostPosted: Mar 12, 2023 16:11    Post subject: Re: adularia locale?  

Hi to everybody!
Don't forget the name Adularia comes from the Mount Adula, in Canton Ticino, Switzerland! Another possible origin could be the Val di Vizze / Pfitscher Tal, South Tyrol!
Greetings from Italy by Riccardo.

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Tobi
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PostPosted: Mar 13, 2023 05:29    Post subject: Re: adularia locale?  

I agree with the other answers. For sure an alpine specimen but no chance of finding the exact locality. There are many places in Austria and Switzerland and maybe some in Italy and France where the piece could be from. And maybe from somewhere else. So Alfredo's idea of labeling it "from an alpine-type vein" is the best you can do.

Regards
Tobi
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