[Rockhounds] Fluororichterite

[Axel Emmermann]

Kreigh, Kitty
> 
> My specimen from there is definitely calcite. It glows with a dull
> reddish orange color, with a few tiny spots of blueish white. 

[Axel] 
[Axel] Do these blueish white fluorescing spots exhibit any phosphorescence
(also bluish white)?
Also: is the calcite phosphorescent?
Typical Mn-Pb activated calcite show a short but obvious phosphorescent
flash if you remove the UV-source fast enough. 
I found that quite some REE-minerals are found in de Wilberforce mines
(Allanite, Euxenite-(Y), Melanocerite-(Ce), Ancylite, Monazite,
Pierririte-(Ce), Stillwellite-(Ce).....
Look at de Levinson modifiers that point towards Cerium. There seems to be
some abundance of cerium there. 
I would not be surprised if those spots glowed pink under LW UV and had a
strong PH after SW-UV ;-))) Just like Terlingua-Type calcite.
It's all much "wet finger work" (roughly translated Antwerp slang for
"guessing") but I would think that Mn-Pb activated calcite is more
orange-red, whereas Ce (most likely together with Eu) causes  a more pinkish
to purple tinged red (the latter often referred to as "deep cherry velvety
red".
 Kitty describes her specimen as red with a pink tinge while you say orange
with a reddish tinge. Would that suggest that the "master-color" is
perceived differently by you and Kitty.
Orange and red are close and there is no clear dividing line to be drawn
between them. 

Maybe there ARE two different fluorescencing calcite types in Wilberforce?

Cheers
Axel