DV22 Achtaragdite
Akhtaragda River mouth, Vilyui River Basin, Saha Republic, Eastern-Siberian Region, Russia
2.4x 2.2x 2.0 cm
$95

A very unusual pseudomorph, I have only seen a few of these for sale, usually labeled as "Feldspar ps. Helvite."  

 

According to Mindat these specimens are actually a combination of minerals that have replaced what was most likely a hydrogarnet.  Exactly what species the specimen originally was however, is unknown.

 

In any case, this is a pretty good example of this rare pseudo.... an interesting mineralogical oddity.








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DV21 Achtaragdite
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DV22 Achtaragdite
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