[Rockhounds] Sugilite fluorescence

[Axel Emmermann]

Hi Dave,

I'm sorry if you got the impression that I was talking down to you. I assure
you that I was'nt.
It's hard to help someone out without having all the facts and it would be
nice if people would volunteer as much information as possible when asking a
question. 
I do realize, however, that I don't live in a perfect world and that I
sometimes need to remind the other party that I have many qualities but
clairvoyance is not one of them ;-))))
No, without kidding, you asked a perfectly good  question and I asked
additional info with a "general reminder to everybody in the group" that
more facts result in better and faster answers. No need to get exited. 

About your specimen: South Africa is a big place... could your specimen be
from Wessel's mine or the 'N Chwaning I or II mines?
No uranyl there but a lot of manganese (near Kuruman, Kalahari manganese
fields!)
The red fluorescing stuff might be mangano calcite or even kutnohorite?
The sugilite is, as far as I know, non-fluorescent.

Axel

> -----Oorspronkelijk bericht-----
> Van: rockhounds-bounces at lists.drizzle.com
[mailto:rockhounds-bounces at lists.drizzle.com]
> Namens betdav97 at aol.com
> Verzonden: maandag 13 oktober 2008 20:28
> Aan: rockhounds at lists.drizzle.com
> Onderwerp: Re: [Rockhounds] Sugilite fluorescence
> 
> Axel,
>   It is from South Africa, fluoresces only under short wave,
> Unless I have it analized, I have no idea what the accompanying
> minerals are. It is sugilite. No offense, but talking down to me
> was the reason I unsubsribed from the UV forum. I don't mean
> to cause hard feelings or cause a e-mail war, but there is plenty
> of info on the orange fluorescence available on the net. I really
> thought I had asked a decent question. Maybe I didn't, c'est le
> guerre,
> dave
> 
> 
> -----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: Mon, 13 Oct 2008 2:02 pm
> Subject: RE: [Rockhounds] Sugilite fluorescence
> 
> 
> 
> Hi Dave:
> 
> 
> 
> Pure speculation but here's my two cents:
> 
> 
> 
> When asking for advise on fluorescence you should always state:
> 
> 1.        which UV lamp did you use: SW-or LW?
> 
> 2.       Where is the specimen from?
> 
> 3.       what are the accompanying minerals?
> 
> 
> 
> I don't think that sugilite fluoresces. I may appear to do so when mixed
> with chalcedony. But then it is the chalcedony that fluoresces.
> 
> If the sugilite is purple in color, it could act as a colored filter
> which
> stops the green fluorescing band of uranyl fluorescence and allows the
> yellow and green to pass.  The green uranyl fluorescence, which is quite
> common in chalcedony, would than appear orange. I think that is why
> metakirchheimerite (Cobalt-uranyl arsenate) also fluoresces orange.
> 
> 
> 
> I have no idea about the red and the blue but that may be accompanying
> minerals..
> 
> 
> 
> Cheers
> 
> Axel
> 
> 
> 
> > -----Oorspronkelijk bericht-----
> 
> > Van: rockhounds-bounces at lists.drizzle.com
> [mailto:rockhounds-bounces at lists.drizzle.com]
> 
> > Namens betdav97 at aol.com
> 
> > Verzonden: maandag 13 oktober 2008 18:23
> 
> > Aan: rockhounds at lists.drizzle.com
> 
> > Onderwerp: [Rockhounds] Sugilite fluorescence
> 
> >
> 
> > Hi All,
> 
> >   Over the weekend at a show, I purchased a piece of
> 
> > sugilite, my first, way tooooo expensive, only because
> 
> > it fluoresced three colors, the normal orange, but also
> 
> > a very hot red and a deep blue. No, it is not lint. Any
> 
> > suggestions as to the activators in the specimen?
> 
> > Dave
> 
> > --
> 
> > _______________________________________________
> 
> > Rockhounds at drizzle Mailing List
> 
> > Subscription Services:
> 
> > http://lists.drizzle.com/mailman/listinfo/rockhounds
> 
> > List Home Page, with a link to the List Usage Policy:
> 
> > http://www.eclecticlapidary.com/Rockhounds/index.html
> 
> 
> 
> --- 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 Home Page, with a link to the List Usage Policy:
> http://www.eclecticlapidary.com/Rockhounds/index.html
> 
> --
> _______________________________________________
> Rockhounds at drizzle Mailing List
> Subscription Services:
> http://lists.drizzle.com/mailman/listinfo/rockhounds
> List Home Page, with a link to the List Usage Policy:
> http://www.eclecticlapidary.com/Rockhounds/index.html