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Rarest beautifully crystallized minerals
  
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David




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PostPosted: Mar 20, 2021 17:44    Post subject: Rarest beautifully crystallized minerals  

Hello!
To your knowledge, which are the rarest minerals on Earth that are actually beautifully crystallized (not microscopic granules or some powdery stuff on a rock)? Many thanks!
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alfredo
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PostPosted: Mar 20, 2021 17:54    Post subject: Re: Rarest beautifully crystallized minerals  

How about andyrobertsite? Beautiful blue crystal, and only one specimen in existence, plus a few tiny crumbs for the systematic rare species collectors that were broken off of the one big piece.
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David




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PostPosted: Mar 20, 2021 18:04    Post subject: Re: Rarest beautifully crystallized minerals  

Thank you Alfredo!
I think this is the first time I have heard about andyrobertsite. It is beautiful indeed, nice bluish color! To be found in Tsumeb, no surprise...
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