Database of luminescent Minerals

CLINOHEDRITE

Chemical Formula: CaZnSiO₄ H₂O

Status: IMA-GP

Crystal System: Monoclinic

Mineral for Display: Yes

Luminescence:

Daylight Picture

CLINOHEDRITE with Franklinite and minor Willemite,
Franklin, New Jersey zinc mine, USA;
Photo and Copyright: James Van Fleet

Short Waves Pictures (254nm)

CLINOHEDRITE (UVSW, fluo yellow-orange) with minor Willemite (green), Franklin, New Jersey zinc mine, USA;
Photo and Copyright: James Van Fleet

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

Comments:

Pectolite and wollastonite from Franklin, New Jersey, USA, have the same luminescent color but the association with hardystonite is typical of clinohedrite.

Clinohedrite occurs sometime as an alteration of purple fluorescent hardystonite (see http://www.mindat.org/photo-263085.html)

Main Activator(s) and spectrum:

Most Common Activator: Mn²⁺

Peaks in the spectrum (nm):

Mn²⁺ : very broad band peaking at 576nm (70nm half-width)
Mn²⁺ : very broad band peaking at 608nm (200nm half-width)

Comments on activators and spectra:

Activator is Mn²⁺ substituting to Ca²⁺;

Best Locality for luminescence(*):

• Parker Shaft, Franklin, Franklin Mining District, Sussex Co., New Jersey, USA;

(*)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 ,

Luminescence Reference on internet:

Images:

• Franklin Mine, New Jersey, USA: http://www.mindat.org/photo-143518.html
• Franklin Mine, New Jersey, USA: http://www.mindat.org/photo-343672.html
• Franklin Mine, New Jersey, USA: http://www.mindat.org/photo-179197.html
• Franklin Mine, New Jersey, USA: http://www.mindat.org/photo-412310.html
• Franklin Mine, New Jersey, USA: http://www.mindat.org/photo-130062.html
• Franklin Mine, New Jersey, USA: http://www.mindat.org/photo-159105.html
• Franklin Mine, New Jersey, USA: http://www.mindat.org/photo-263085.html
• Franklin Mine, New Jersey, USA: http://www.mindat.org/photo-390085.html
• Franklin Mine, New Jersey, USA: http://www.mindat.org/photo-446839.html
• Franklin Mine, New Jersey, USA: http://www.mindat.org/photo-464301.html
• Franklin Mine, New Jersey, USA: http://www.mindat.org/photo-510125.html
• Franklin Mine, New Jersey, USA: http://www.mindat.org/photo-613239.html
• Franklin Mine, New Jersey, USA (same item LW): http://www.mindat.org/photo-613240.html
• Franklin Mine, New Jersey, USA: http://www.mindat.org/photo-688273.html
• Franklin Mine, New Jersey, USA (same item in LW): http://www.mindat.org/photo-688274.html

Mineralogical Reference on internet:

  http://www.mindat.org/show.php?name=Clinohedrite

  http://webmineral.com/data/Clinohedrite.shtml

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