CREEDITE
Chemical Formula: Ca3Al2(SO4)(F,OH)10 2H2O
Familly: Sulfates
Status: IMA-GP
Crystal System: Monoclinic
Mineral for Display: No
Luminescence:
UV Type |
Main color |
Intensity |
Observation Frequency |
|
| | | |
Long Waves (365nm): | Yellowish White | | | Short Waves (254 nm): | Bluish White | | | | | | |
Phosphorescence (in the common meaning of the term) seen by naked eye:
UV Type |
Color |
Intensity |
Observation Frequency |
Short Waves (254 nm): | Bluish White | | |
Main Activator(s) and spectrum:
No data
Best Locality for luminescence(*):
- Hall Molybdenum Mine (Anaconda Mine; Liberty Mine; Cyprus Tonopah Mine; Nevada Moly project; Equatorial Copper Mine; Tonopah Copper Mine; San Antonio Mine), San Antone District, San Antonio Mts, Nye Co., Nevada, USA;
- Colquiri mine, Colquiri, Inquisivi Province, La Paz Department, Bolivia;
- Colorado Fluorspar Co. Mine, Wagon Wheel Gap, Mineral Co., Colorado, USA (yellowish-white LW);
- Cresson mine, Cripple Creek, Teller County, Colorado, USA (?);
- Navidad Mine, Abasolo, Rodeo, Rodeo Municipality, Durango, Mexico (bright purple fluo);
- Qinglong Mine, Dachang Sb ore field, Qinglong County, Qianxinan, Guizhou, China (cream & blue-white);
(*)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 ,
- Handbook of Fluorescent Gems and Minerals, a practical guide for the gem and mineral collector, Jack de Ment, 1949 ,
Luminescence Reference on internet:
Mineralogical Reference on internet:
http://www.mindat.org/show.php?name=Creedite
http://webmineral.com/data/Creedite.shtml
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