Status: NON APPR
Crystal System: Amorphous
Mineral for Display: No
|Long Waves (365nm): || Tawn ||Weak|
Phosphorescence (in the common meaning of the term) seen by naked eye:
No phosphorescence seen by naked eye whatever the type of UV
An impure earthy or coaly bitumen, which emits a highly foetid odour when burning.
Cited by De Ment.
syn.: merda di diavolo, stercus diaboli, houille papyracée, stinkkohle
Main Activator(s) and spectrum:
Most Common Activator: Intrinsic organic material
No spectrum for the moment
Best Locality for luminescence(*):
(*)Data are not exhaustive and are limited to the most important localities for fluorescence
Bibliographical Reference for luminescence:
- Handbook of Fluorescent Gems and Minerals, a practical guide for the gem and mineral collector, Jack de Ment, 1949 ,
Mineralogical Reference on internet:
Search on Internet:
Search for images on 'Google Image'
Search for documents in English on Google
Search for documents in any languages on Google
Search on Wikipédia
While all due attention has been paid to the implementation of the database, it may contain errors and/or accidental omissions. By nature, the database will always be incomplete because science always evolves according to new analysis.
A request providing no result means only that no such reference exists in the database, but it does not mean that what you are looking for does not exist, just not to our knowledge. If you think you have found an error or omission, please let us know via the contact page
being sure to cite the source of information.