Chemical Formula: Ca5(PO4,CO3)3F
Familly: Phosphates, Arseniates, Vanadates
Crystal System: Hexagonal
Mineral for Display: No
Associated names (luminescent varieties, discredited names, synonymes etc.): collophane, francolite,
|Long Waves (365nm): || Yellowish White ||Short Waves (254 nm): || Yellowish White |
|Other colors SW: || |
Phosphorescence (in the common meaning of the term) seen by naked eye:
Main Activator(s) and spectrum:
Best Locality for luminescence(*):
- Yukspor Mt, Khibiny Massif, Kola Peninsula, Murmanskaja Oblast, Northern Region, Russia (White aggregates showing a bright yellow luminescence);
- Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada ( SW strong yellowish with strong REE absorption, embedded in massive sodalite with a LW orange luminescence;
(*)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 ,
Mineralogical Reference on internet:
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