Database of luminescent minerals 

STEACYITE

Chemical formula: Th(Ca,Na)₂K_1-xSi₈O₂₀ (x=0.2-0.4)

Family: Silicates

Status: IMA-A

Crystal system : Tetragonal

Display mineral: NON

Luminescence:

Daylight picture

STEACYITE, twinned xl with aegirine in charoïte, Aldan Shield,
Sakha Republic (Yakutia), Russia;
Copyright 2006 S. Schneider,
The World of Fluorescent Minerals,
Used with permission of the author,

Shortwave (254nm) picture

STEACYITE, twinned xl with aegirine in charoïte, Aldan Shield,
Sakha Republic (Yakutia), Russia;
Steacyite fluoresces green SW and LW, albite red SW,
Copyright 2006 S. Schneider,
The World of Fluorescent Minerals,
Used with permission of the author,

Do you have a photo of this mineral you would like to see in the gallery? Contact us!

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

No data

Comments:

Embedded in Charoite with microcline and aegirine, similar in apparence to ekanite (crystals of rectangular section, glassy and honey yellow in color)

Activator(s) and spectrum:

Activator(s): (UO₂)²⁺ (ion Uranyle) en impureté,

No spectrum yet

Best localities for fluorescence (*):

• Murunski Massif, near Aldon, south of the Lena River, Siberia, Russia;
• Aldan Shield, Sahka republic (Yakutia), Russia;

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

Bibliographic reference for luminescence:

• The World of Fluorescent Minerals, Stuart Schneider, Schiffer Publishing, 2006, ISBN 0-7643-2544-2 ,

Reference for luminescence on the Internet:

Mineralogical reference on the Internet:

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

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

Internet Search:

  Image search on 'Google Images'

  Search for documents in all languages on Google

  Search on Wikipedia