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Olekminskite?

Posted by Reiner Mielke  
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Reiner Mielke March 12, 2018 09:36PM
The description of this is " The mineral forms needlelike crystals, 0.005-0.010 mm thick, occurring in spherulitic aggregates 0. l0-0. I 5 mm in radius." http://rruff.info/doclib/am/vol78/AM78_450.pdf
https://www.mindat.org/photo-166448.html and https://www.mindat.org/photo-776653.html don't look anything like the description for the species? Have these been analyzed? If not then they should not be posted as examples of the species. Also this description should be included on the Mindat page for Olekminskite.
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Jeff Weissman March 12, 2018 10:19PM
Hi Reiner, I actually remember taking the photograph (166448) of this specimen, as at the time it was somewhat problematic, as you suggest. Indeed, there were minute spherical aggregates of the mineral present, but this is not seen in the photograph due to the inadequate equipment I was using at the time, compounded with what looks like a bad scan of the original film and even worse post-processing. In Łukasz's image (776653) you can see in the lower right quadrant what looks like to be the terminations of the olekminskite, in a crystalline barytocalcite matrix. Łukasz will need to confirm, of course.

Moderators - would be OK to delete image 166448, due to poor quality.
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Uwe Kolitsch March 13, 2018 02:25PM
166448 user-only now.
Sorry, only registered users may post in this forum.

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