SHORTITE
Chemical Formula: Na2Ca2(CO3)3
Familly: Carbonates
Status: IMA-GP
Crystal System: Orthorhombic
Mineral for Display: No
Luminescence:
UV Type |
Main color |
Intensity |
Observation Frequency |
|
| | | |
Long Waves (365nm): | Yellow | Strong | | Short Waves (254 nm): | Orange | Medium | | | | | |
Other colors SW: | Orangy yellow , Orange , Tawn , |
Phosphorescence (in the common meaning of the term) seen by naked eye:
UV Type |
Color |
Intensity |
Observation Frequency |
Long Wave (365nm): | Blue | | |
Short Waves (254 nm): | Blue | | |
Main Activator(s) and spectrum:
Most Common Activator: Dy3+
Other activators: Sm3+ , Tb3+ ,
Peaks in the spectrum (nm):
Tb3+ : 548nm
Dy3+ : 490, 580, 660, 720nm
Sm3+ : 598, 605,645nm
(All repl. Ca2+)
No spectrum for the moment
Comments on activators and spectra:
Shortite was studied by steady-state luminescence spectroscopy and luminescence of trivalent REE, such as Gd, Dy, Sm and Tb was found (Gorobets and Rogojine 2001).
Excitation by CW laser with 532 and 780 nm revealed narrow luminescence lines possibly belonging to Nd3+ and two luminescence bands peaking at 650 and 705 nm
Best Locality for luminescence(*):
- FMC Westvaco Mine, Green River Formation, west of Green River, Sweetwater County, Wyoming, USA (bright yellow or pink-orange to brown SW);
- Stauffer Mine, Green River, Wyoming, USA (yellow fluo, blue phospho);
- Khibiny Massif, Kola Peninsula, Murmanskaja Oblast, Northern Region, Russia (orange);
(*)Data are not exhaustive and are limited to the most important localities for fluorescence
Bibliographical Reference for luminescence:
- The Henkel Glossary of Fluorescent Minerals, Dr. Gerhard Henkel, Published by the FMS, 1989 ,
- Fluorescence: Gems and Minerals Under Ultraviolet Light, Manuel Robbins, 1994, Geoscience Press, ISBN 0-945005-13-X ,
- Luminescence Spectroscopy of Minerals and Materials, M. Gaft, R. Reisfeld, G. Panczer, Springer Editor, ISBN: 10 3-540-21918-8 ,
- Luminescent Spectra of Minerals, Boris S. Gorobets and Alexandre A. Rogojine, Moscow, 2002 ,
Luminescence Reference on internet:
Mineralogical Reference on internet:
http://www.mindat.org/show.php?name=Shortite
http://webmineral.com/data/Shortite.shtml
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