Chemical Formula: Ca2Mg(CO3)2B2(OH)8 4H2O
Crystal System: Monoclinic
Mineral for Display: No
|Long Waves (365nm): || White |
Phosphorescence (in the common meaning of the term) seen by naked eye:
|Long Wave (365nm): ||Green ||Very weak|
Found in a dry lake deposit with hydroboracite, ulexite and gypsum;
Main Activator(s) and spectrum:
Best Locality for luminescence(*):
- Da Qaidam salt lake (Dachaidan salt lake), Da Qaidam Co. (Dachaidan Co.), Haixi Autonomous Prefecture, Qinghai Province, China;
(*)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 ,
Mineralogical Reference on internet:
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