[Rockhounds] Need help with Mineral ID

[Axel Emmermann]

Hi Wes,

Raspberry is more purple than red, do we agree on that or does any of us
have a wrong color in mind?

More purple could be indicative of calcite (crystal defects and chemical
replacements of CO3 by CO2, OH, PO3 and such) all produce a bluish tint in
the overall red fluorescence of manganese replacing calcium.

In dolomite, manganese replacing magnesium would produce a more orange
color. Slightly so but measurable.

Still... that's all very theoretical. Should ever, by moving the specimen, a
small piece break off I'll be glad to measure its fluorescent spectrum (for
what it's worth ;-))). Don't go breaking of pieces now ;-)))

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 17:37
> Aan: Rockhounds at drizzle.com: A mailing list for rock and gem collectors
> Onderwerp: Re: [Rockhounds] Need help with Mineral ID
> 
> Axel,
> I used a 35 watt SW lamp on it and it glows medium strong in the pink
> crystal area. A LW lamp does nothing at all. It was handed to me by a
young
> couple who inherited it from their grandfather (mineral collector) and
they
> have no idea where it came from or how long ago he acquired it. I'm not
sure
> I have the equipment to get down into the specimen and isolate a separate
> image of the individual crystals. It would be nice to have had a catalogue
> to refer to but that isn't possible. I still like the presentation it has
> though; It's just lovely I think!
> regards,
> Wes
> ----- Original Message -----
> From: "Axel Emmermann" <axel.emmermann at pandora.be>
> To: "'Rockhounds at drizzle.com: A mailing list for rock and gem collectors'"
> <rockhounds at lists.drizzle.com>
> Sent: Tuesday, June 09, 2009 2:43 AM
> Subject: RE: [Rockhounds] Need help with Mineral ID
> 
> 
> > 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
> >>
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