Database of luminescent Minerals


Chemical Formula: C24H12

Familly: Organic

Status: IMA-GP

Mineral for Display: Yes

Associated names (luminescent varieties, discredited names, synonymes etc.):  karpatitependletonite


UV Type Main color Intensity Observation Frequency
Long Waves (365nm):      Bluish White StrongAlways
Short Waves (254 nm):      Bluish White StrongAlways

Daylight Picture

carpathite (KARPATITE)
Picacho Mine, New Idria District, San Benito Co., California, USA;
Col. G.Barmarin; Photo: G. Barmarin

Short Waves Pictures (254nm)

carpathite (KARPATITE), UVSW
Picacho Mine, New Idria District, San Benito Co., California, USA;
Col. G.Barmarin; Photo: G. Barmarin


Galerie de photos:


     To the gallery (4 images in the gallery)

Phosphorescence (in the common meaning of the term) seen by naked eye:

No Data


Chemically identical to Coronene (Hexabenzobenzene), a polycyclic aromatic hydrocarbon used to produce Organic Electroluminescent Material.

The name replaces pendletonite (CNMMN, 1971), karpatite and coronene.

Karpathite is composed of flakes of pure coronene embedded in sedimentary rock. This mineral may result from ancient hydrothermal vent activity. See gallery for a scheme of the chemical structure of coronene.

Beware when manipulating, coronene is toxic and carcinogen:

Safety Data Sheet

Main Activator(s) and spectrum:

Most Common Activator: Intrinsic organic material

Peaks in the spectrum (nm):

462nm, (482), (493), (503), (515)

KARPATITE, Picacho Mine, California, USA. Excitation: laser 405nm. Col. G. Barmarin; Spectre: G. Barmarin


  To the spectrum gallery (1 spectra in the gallery)

Comments on activators and spectra:

Blue luminescence due to the two linearly annelated benzene rings characteristic of aromatic compound (singlet-singlet electron transition within the benzene rings).

Spectral lines (cm-1): 208, 192, 178, 164.

Best Locality for luminescence(*):

(*)Data are not exhaustive and are limited to the most important localities for fluorescence

Bibliographical Reference for luminescence:

Luminescence Reference on internet:

Mineralogical Reference on internet:

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Note: 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.


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