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20 Mar-13:59:56 Sharp sphalerite from spain / mvm (minerals - virtual museum) collection (Jordi Fabre)
20 Mar-11:03:46 Re: collection of michael shaw (Michael Shaw)
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19 Mar-22:51:23 The mizunaka collection - quartz (Am Mizunaka)
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19 Mar-06:34:35 Re: collection of enrique llorens (Enrique Llorens)
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19 Mar-00:43:55 Re: #mvm (minerals - virtual museum) collection (Roger Warin)
18 Mar-17:19:08 Tricolor elbaite from rubaya, congo / mvm (minerals - virtual museum) collection (Jordi Fabre)
18 Mar-15:30:38 Re: collection of michael shaw (Michael Shaw)
18 Mar-10:30:15 Re: collection of enrique llorens (Enrique Llorens)
18 Mar-09:40:58 Re: libyan desert glass structure (Roger Warin)
18 Mar-05:15:49 Re: march 15 & 16 - nautilus ghent mineral & fossil show (in gent, belgium) (Orlando)
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18 Mar-03:10:12 Re: libyan desert glass structure (Marco Campos-venuti)
18 Mar-04:18:05 Artificial intelligence and libyan desert glass, tektites (Roger Warin)
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17 Mar-17:47:56 The mizunaka collection - cryptomelane (Am Mizunaka)
17 Mar-16:50:24 Re: libyan desert glass structure (Bob Morgan)
17 Mar-15:29:41 Re: libyan desert glass structure (Marco Campos-venuti)

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Proustite
  
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Padego




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PostPosted: Mar 04, 2025 21:42    Post subject: Proustite  

Hello, retired goldsmith/gemmologist from the west coast of Canada with a question. I came across this specimen in my late father's small collection. I'm curious about the provenance . I'm not sure when he bought this but I believe he got this with a collection of other minerals a few of which I now have. I have read about Carl Bosch but how, if this was part of the Smithsonian collection, did it appear on the open market? Did they sell some of the collection? Anyway, it's interesting that it came with the little tag from a Dr. F. Krantz (the original seller?). Any info you may have would be greatly appreciated. I've been enjoying perusing the site, some really beautiful specimens on view!
Best regards
Padego



IMG_6750.jpeg
 Mineral: Proustite
 Locality:
Chañarcillo, Copiapó Province, Atacama Region, Chile
 Dimensions: approx. 65.00x64.00mm
 Description:
 Viewed:  948 Time(s)

IMG_6750.jpeg



IMG_6749.jpg
 Description:
 Viewed:  946 Time(s)

IMG_6749.jpg


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James Catmur
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PostPosted: Mar 05, 2025 04:44    Post subject: Re: Proustite  

Museums sometimes exchange 'duplicate' specimens by swapping them for other specimens. It is not uncommon for collections to have specimens from museums. I have them from a variety of museums, but not the Smithsonian.

Great provenance for the specimen and I am sure you will find information on the previous owners.
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PostPosted: Mar 05, 2025 05:10    Post subject: Re: Proustite  

For information on Krantz read this

https://mineralogicalrecord.com/biographies_labels/krantza-and-f/
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PostPosted: Mar 05, 2025 05:17    Post subject: Re: Proustite  

For the history of the 'Bosch' collection you could read this, and you will see that some were sold

https://www.mindat.org/article.php/4423/Richard+Gunter+Catalogue+Millerite

For more information about the mineral visit:

https://www.mindat.org/min-3294.html

For more information about the locality:

https://www.mindat.org/loc-654.html

(fun fact, my ancestors owned mines in that area, but I am not sure which ones)
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Padego




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PostPosted: Mar 05, 2025 11:14    Post subject: Re: Proustite  

Thank you so much! Exactly what I was looking for, much appreciated.
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