[Rockhounds] Need help with Mineral ID

[Axel Emmermann]

Wes, what's the locality?

Can we get a detail of the specimen? One full size photo of one of those
white crystals and a good one of one of the pink crystals.

A good way to find out if it belongs somewhere in the range of calcite to
rhodochrosite (or kutnohorite) is to check the phosphorescence. If it 's a
manganese activated carbonate of calcium it will show a red flash if you
quickly remove the UV lamp.
Other red fluorescing minerals that are activated by chromium don't do
that... Aragonite sometimes fluoresces reddish pink but the phosphorescence
of those appears to be green (to the human eye).

Cheers

Axel Emmermann
European Regional Vice President of the
Fluorescent Mineral Society
<http://www.uvminerals.org/>
=========================
Mineralogische Kring Antwerpen/Antwerp Mineralogical Society
<http://www.minerant.org/index.html>
Werkgroepleider/Workgroup leader: Fluorescerende mineralen/Fluorescent
minerals
Technische Realisaties/Engineering
My website: http://users.telenet.be/axel.emmerman/FiatLux/Index.php
 
 
> -----Oorspronkelijk bericht-----
> Van: rockhounds-bounces at lists.drizzle.com
[mailto:rockhounds-bounces at lists.drizzle.com]
> Namens Wes Lingerfelt
> Verzonden: dinsdag 9 juni 2009 7:17
> Aan: rockhounds at lists.drizzle.com
> Onderwerp: [Rockhounds] Need help with Mineral ID
> 
> http://www.flickr.com/photos/wirewrap/sets/72157619389520369/
> 
> Does anyone out there recognize this mineral? I think it is Manganoan
Calcite. It has Pyrite
> scattered all over it and it Fluoresces deep Raspberry Red under short
wave UV. Any help will
> be appreciated.
> Wes Lingerfelt
> 
> --- StripMime Report -- processed MIME parts ---
> multipart/alternative
>   text/plain (text body -- kept)
>   text/html
> ---
> --
> _______________________________________________
> Rockhounds at drizzle Mailing List
> Subscription Services:
> http://lists.drizzle.com/mailman/listinfo/rockhounds
> List Usage Policy:
> http://rockhounds.ning.com/page/list-rules