Chemical Formula: XMg7Si8O22(OH)2
Status: IMA-A (GP)
Crystal System: Monoclinic
Mineral for Display: No
|Long Waves (365nm): || Yellowish White |
Phosphorescence (in the common meaning of the term) seen by naked eye:
Main Activator(s) and spectrum:
Best Locality for luminescence(*):
- Homestake Mine, South Dakota, USA (pinkish white LW, nothing SW);
(*)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 ,
- Handbook of Fluorescent Gems and Minerals, a practical guide for the gem and mineral collector, Jack de Ment, 1949 ,
Mineralogical Reference on internet:
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