Database of luminescent Minerals

PROSOPITE

Chemical Formula: CaAl₂(F,OH)₈

Familly: Halides

Status: IMA-GP

Crystal System: Monoclinic

Mineral for Display: No

Luminescence:

Phosphorescence (in the common meaning of the term) seen by naked eye:

Main Activator(s) and spectrum:

Most Common Activator: Ce³⁺

Other activators:            Cr³⁺ , Sm³⁺ , Eu³⁺ ,

Peaks in the spectrum (nm):

Ce³⁺ : 375nm

Cr³⁺ : sharp peak at 617, 656, 699nm (exc. 532nm)

Comments on activators and spectra:

Prosopite was studied by steady-state luminescence spectroscopy and luminescence of trivalent REE, such as Gd, Ce, Dy, and Sm, was found (Gorobets and Rogojine 2001).

Excitation by CW laser with 532 nm revealed narrow luminescence lines possibly belonging to Eu3+, Sm3+ and Cr3+ and luminescence band peaking at 720 nm (Gaft)

Best Locality for luminescence(*):

• Ivigtut Cryolite deposit, Ivittuut, Arsuk Fjord, Sermersooq, Greenland;

(*)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:

• http://www.crlc.ca/Fluorescent Mineral Database 1.pdf

Mineralogical Reference on internet:

  http://www.mindat.org/show.php?name=Prosopite

  http://webmineral.com/data/Prosopite.shtml

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