Chemical Formula: (K,Na)3(Al,Fe+3)5(PO4)2(PO3OH)6 18H2O
Familly: Phosphates, Arseniates, Vanadates
Mineral for Display: No
|Long Waves (365nm): || Yellowish White ||Weak||Short Waves (254 nm): || Yellowish White ||Weak|
Phosphorescence (in the common meaning of the term) seen by naked eye:
Main Activator(s) and spectrum:
Best Locality for luminescence(*):
- South Farallon Island (Southeast Farallon Island), Farallon Islands, San Francisco Co., California, USA;
(*)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 ,
Luminescence Reference on internet:
Mineralogical Reference on internet:
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