Database of luminescent minerals 

MERWINITE

Chemical formula: Ca₃Mg(SiO₄)₂

Family: Silicates

Status: IMA-GP

Crystal system : Monoclinic

Display mineral: NON

Luminescence:

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Phosphorescence (in the common sense of the term) observable with the naked eye:

No data

Comments:

Manel Robbins says that luminescent color of material from the Crestmore Quarry is reported to have the same color as hardystonite therefore presumably dark purple to violet.

Activator(s) and spectrum:

No spectrum yet

Best localities for fluorescence (*):

• Commercial quarry, Sky Blue Hill, Crestmore quarries, Crestmore, Riverside Co., California, USA;
• Velardeña, Velardeña District, Mun. de Cuencamé, Durango, Mexico  (pale orange LW, cited by De Ment & Sterling Gleason, but no merwinite cited there in Mindat!);

(*)The data are not exhaustive and are limited to a few remarkable localities for fluorescence

Bibliographic 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 ,

Mineralogical reference on the Internet:

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

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

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