cobalt - lotharmeyerite or koritnigite ? Hello ! All is in the title :). Thanks supermacro731.jpg mod_embed_images_loadimage('3ce93b94945b11dd6d7f3e0b7366da3f', 'http://www.mindat.org/forum.php?addon,11,module=embed_images,url=http%3A%2F%2Fwww.alpinismeetmineraux.fr%2Fmineralogie%2Fmacro%2Fsupermacro%2Fsupermacro731.jpg', 'http://www.alpinismeetmineraux.fr/mineralogie/macro/supermacro/supermacro731.jpg', 'http://www.mindat.org/forum.php?addon,11,module=embed_images,check_scaling=1,url=http%3A%2F%2Fwww.alpinismeetmineraux.fr%2Fmineralogie%2Fmacro%2Fsupermacro%2Fsupermacro731.jpg', '', 260203, 600, 600, 'Loading image ...', false); http://www.mindat.org/forum.php?read,11,260203,260203#msg-260203 Tue, 21 May 2013 03:42:04 +0000 Phorum 5.2.15a http://www.mindat.org/forum.php?read,11,260203,260838#msg-260838 Re: cobalt - lotharmeyerite or koritnigite ? http://www.mindat.org/forum.php?read,11,260203,260838#msg-260838 Lefteris Rantos Identity Help Tue, 15 May 2012 18:51:27 +0000 http://www.mindat.org/forum.php?read,11,260203,260740#msg-260740 Re: cobalt - lotharmeyerite or koritnigite ? http://www.mindat.org/forum.php?read,11,260203,260740#msg-260740 Uwe Kolitsch Identity Help Mon, 14 May 2012 17:48:20 +0000 http://www.mindat.org/forum.php?read,11,260203,260687#msg-260687 Re: cobalt - lotharmeyerite or koritnigite ? http://www.mindat.org/forum.php?read,11,260203,260687#msg-260687 www.mindat.org] directly on top of this [www.mindat.org] Is it common to find two different forms of Erythrite together like this or are the balls something else?]]> Reiner Mielke Identity Help Sun, 13 May 2012 22:11:26 +0000 http://www.mindat.org/forum.php?read,11,260203,260415#msg-260415 Re: cobalt - lotharmeyerite or koritnigite ? http://www.mindat.org/forum.php?read,11,260203,260415#msg-260415
If the analyses were done by SEM-EDS you have to watch out - Mg and As peaks show a very strong overlap!]]> Uwe Kolitsch Identity Help Thu, 10 May 2012 18:13:31 +0000 http://www.mindat.org/forum.php?read,11,260203,260245#msg-260245 Re: cobalt - lotharmeyerite or koritnigite ? http://www.mindat.org/forum.php?read,11,260203,260245#msg-260245 Frédéric Hède Identity Help Tue, 08 May 2012 19:15:52 +0000 http://www.mindat.org/forum.php?read,11,260203,260241#msg-260241 Re: cobalt - lotharmeyerite or koritnigite ? http://www.mindat.org/forum.php?read,11,260203,260241#msg-260241
By the way, Frederic, these are beautiful photos!!

Lefteris.]]> Lefteris Rantos Identity Help Tue, 08 May 2012 19:01:22 +0000 http://www.mindat.org/forum.php?read,11,260203,260237#msg-260237 Re: cobalt - lotharmeyerite or koritnigite ? http://www.mindat.org/forum.php?read,11,260203,260237#msg-260237
i have written to Ivan (who has sent this specimen to me)

His response : I open personately the geode, extracting 46 samples. I let 2 of them analyze and they both gave a high Mg enought to cosider them wendwilsonite.

=> Mg is enough to spell them wendwilsonite....

I correct now definitively... ;)

Fred]]> Frédéric Hède Identity Help Tue, 08 May 2012 18:21:43 +0000 http://www.mindat.org/forum.php?read,11,260203,260236#msg-260236 Re: cobalt - lotharmeyerite or koritnigite ? http://www.mindat.org/forum.php?read,11,260203,260236#msg-260236 Uwe Kolitsch Identity Help Tue, 08 May 2012 18:06:56 +0000 http://www.mindat.org/forum.php?read,11,260203,260229#msg-260229 Re: cobalt - lotharmeyerite or koritnigite ? http://www.mindat.org/forum.php?read,11,260203,260229#msg-260229 Frédéric Hède Identity Help Tue, 08 May 2012 16:41:42 +0000 http://www.mindat.org/forum.php?read,11,260203,260228#msg-260228 Re: cobalt - lotharmeyerite or koritnigite ? http://www.mindat.org/forum.php?read,11,260203,260228#msg-260228 www.mindat.org]
Concerning this photo, the Sainfeldite ID is probably correct for the central violet-coloured crystals (I don't think it's Cobaltkoritnigite).

Concerning the pink balls, they could be either Erythrite, or Co-bearing Picropharmacolite. I really can't tell here. Association with Sainfeldite implies Picropharmacolite, but of course could also be consistent with Erythrite.

Lefteris.]]> Lefteris Rantos Identity Help Tue, 08 May 2012 16:05:41 +0000 http://www.mindat.org/forum.php?read,11,260203,260227#msg-260227 Re: cobalt - lotharmeyerite or koritnigite ? http://www.mindat.org/forum.php?read,11,260203,260227#msg-260227


I prefer this solution because color are not ever the same pink not ?

and here the same problem : (i take erythrite like this photo....)

same problem
]]> Frédéric Hède Identity Help Tue, 08 May 2012 15:47:37 +0000 http://www.mindat.org/forum.php?read,11,260203,260226#msg-260226 Re: cobalt - lotharmeyerite or koritnigite ? http://www.mindat.org/forum.php?read,11,260203,260226#msg-260226
Ok for erythrite but change on your base error too :)

Thanks Lefteris :)


I make modification in next hours.]]> Frédéric Hède Identity Help Tue, 08 May 2012 15:41:56 +0000 http://www.mindat.org/forum.php?read,11,260203,260225#msg-260225 Re: cobalt - lotharmeyerite or koritnigite ? http://www.mindat.org/forum.php?read,11,260203,260225#msg-260225
When corrected, these images can not be displayed in the main database.]]> Jolyon & Katya Ralph Identity Help Tue, 08 May 2012 15:34:02 +0000 http://www.mindat.org/forum.php?read,11,260203,260222#msg-260222 Re: cobalt - lotharmeyerite or koritnigite ? http://www.mindat.org/forum.php?read,11,260203,260222#msg-260222
I noticed this thread after I started a different topic concerning your photographs! See [www.mindat.org]

To me, this is certainly NOT Cobaltlotharmeyerite, and most probably Erythrite. It could also be some other white arsenate such as Picropharmacolite, tinged pink by Co impurity.

I also strongly doubt that it can be Cobaltkoritnigite. Also these two photos [www.mindat.org] and [www.mindat.org] are most probably Erythrites and not Cobaltkoritnigite. True Cobaltkoritnigite shows a different distinct purple-red colour and also different crystal shape, such as in these photos (all from Bou Azzer distr.): [www.mindat.org] [www.mindat.org] [www.mindat.org] [www.mindat.org]

On the other hand, the tiny indistinct reddish-brown micro-xls scattered on Quartz and the grey sulfide, that are visible in several of your photos (most clearly here [www.mindat.org] ), are much more likely to be Cobaltlotharmeyerite.

Lefteris.]]> Lefteris Rantos Identity Help Tue, 08 May 2012 14:58:31 +0000 http://www.mindat.org/forum.php?read,11,260203,260220#msg-260220 Re: cobalt - lotharmeyerite or koritnigite ? http://www.mindat.org/forum.php?read,11,260203,260220#msg-260220
But on other post someone siad to me than it's probably erythrite.... Please help me for this identification :).]]> Frédéric Hède Identity Help Tue, 08 May 2012 14:52:48 +0000 http://www.mindat.org/forum.php?read,11,260203,260211#msg-260211 Re: cobalt - lotharmeyerite or koritnigite ? http://www.mindat.org/forum.php?read,11,260203,260211#msg-260211
Possibly Cobaltkoritnigite? Compare here: [www.mindat.org]

Ron]]> Ronald John Gyllenhammer Identity Help Tue, 08 May 2012 13:50:24 +0000 http://www.mindat.org/forum.php?read,11,260203,260203#msg-260203 cobalt - lotharmeyerite or koritnigite ? http://www.mindat.org/forum.php?read,11,260203,260203#msg-260203
All is in the title :). Thanks


]]> Frédéric Hède Identity Help Tue, 08 May 2012 09:00:04 +0000