Database of luminescent minerals 

HANKSITE

Chemical formula: KNa₂₂(SO₄)₉(CO₃)₂Cl

Family: Sulfates

Status: IMA-GP

Crystal system : Hexagonal

Display mineral: NON

Luminescence:

Daylight picture

HANKSITE;
Photo and Copyright: James Hamblen
Site of the author
Used with permission of the author

Shortwave (254nm) picture

HANKSITE;
UVSW
Photo and Copyright: James Hamblen
Site of the author
Used with permission of the author

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

Activator(s) and spectrum:

No data

Peaks in the spectrum (nm):

490, 517, 553, 600, 650, 710nm

Hanksite, California, USA; Excitation: laser 405nm. Col. G. Barmarin; Spectre: G. Barmarin

Comments on spectrum and activators:

The luminescence of Hanksite was noticed by Kunz and Baskerville (1903) and has been studied by Melhase (1939).

Best localities for fluorescence (*):

• Searles Lake, San Bernardino Co., California, USA;

(*)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=Hanksite

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

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