HEMIMORPHITE
Chemical Formula: Zn4Si2O7(OH)2 H2O
Familly: Silicates
Status: IMA-GP
Crystal System: Orthorhombic
Mineral for Display: No
Associated names (luminescent varieties, discredited names, synonymes etc.):
calamine, vanuxemite,
Luminescence:
UV Type |
Main color |
Intensity |
Observation Frequency |
|
| | | |
Long Waves (365nm): | Yellowish White | | | Mid waves (320 nm): | Yellowish White | | | Short Waves (254 nm): | Blue | | | | | | |
Other colors LW: | White , |
Other colors SW: | White , Bluish White , Yellowish White , Green , |
Phosphorescence (in the common meaning of the term) seen by naked eye:
UV Type |
Color |
Intensity |
Observation Frequency |
Long Wave (365nm): | White | Weak | |
Mid Waves (320 nm): | White | Weak | | Short Waves (254 nm): | White | Weak | |
Triboluminescence: Yes
Main Activator(s) and spectrum:
No data
Comments on activators and spectra:
Gunnell has studied the luminescence of hemimorphite in 1933 (publied in The Mineralogist?).
Best Locality for luminescence(*):
- Hill Top Mine, Cochise county, Arizona, USA;
- Sterling Mine, Sterling Hill, Ogdensburg, Franklin Mining District, Sussex Co., New Jersey, USA (white or green SW);
- Ojuela Mine, Mapimí, Municipio Mapimí, Durango Mexico (weak LW+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 ,
- Fluorescence: Gems and Minerals Under Ultraviolet Light, Manuel Robbins, 1994, Geoscience Press, ISBN 0-945005-13-X ,
- Handbook of Fluorescent Gems and Minerals, a practical guide for the gem and mineral collector, Jack de Ment, 1949 ,
Luminescence Reference on internet:
- The Langesundsfjord: history, geology, pegmatites, minerals, Alf Olav Larsen, Bode Verlag Gmbh, 2010 ISBN 978-3-925094-97-2.
- The Picking Table (Journal of the Franklin-Ogdensburg Mineralogical Society), vol. 55, no. 2, p. 13-25
- http://www.minerant.org/archief/fluo-Belgie.pdf
- MONT-SAINT-HILAIRE, History, Geology, Mineralogy, Laszlo HORVATH, The Canadian Mineralogist, Special Publication 14, 2019
Images:
Mineralogical Reference on internet:
http://www.mindat.org/show.php?name=Hemimorphite
http://webmineral.com/data/Hemimorphite.shtml
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