Chemical Formula: Ca5(AsO4,PO4)3 Cl
Familly: Phosphates, Arseniates, Vanadates
Crystal System: Hexagonal
Mineral for Display: No
|Short Waves (254 nm): || Orangy yellow ||Strong|
|Other colors SW: || |
Yellow , Orange , Yellowish ,
Phosphorescence (in the common meaning of the term) seen by naked eye:
The arsenate analogue of Chlorapatite.
The Ca analogue of Hedyphane.
Main Activator(s) and spectrum:
Best Locality for luminescence(*):
- Franklin Mine, Franklin, Sussex County, New Jersey, USA;
- ZCA (Zinc Corp. of America) N°4 Mine, Balmat, St Lawrence County, New York, USA;
- Langban, Sweden;
- Garpenberg Norra Mine, Garpenberg, Hedemora, Dalarna County, Sweden (associated with red fluorescing calcite);
(*)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 ,
- The World of Fluorescent Minerals, Stuart Schneider, Schiffer Publishing, 2006, ISBN 0-7643-2544-2 ,
Luminescence Reference on internet:
Mineralogical Reference on internet:
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