Database of luminescent minerals 

THOROGUMMITE

DOUBTFUL FLUORESCENCE but sometimes cited in luminescence literature

Chemical formula: See THORITE Th(SiO₄)_1-x(OH)_4x

Family: Silicates

Status: IMA-GP

Crystal system : Tetragonal

Display mineral: NON

Luminescence:

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

No data

Comments:

?

The specimen from Rock Landing Quarry, Haddam Neck, Haddam, Middlesex Co., Connecticut, USA described in mindat.org is EDXRF identified and the picture shows definitely a fluorescence but from alteration.

Activator(s) and spectrum:

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

No spectrum yet

Best localities for fluorescence (*):

• Rock Landing Quarry, Haddam Neck, Haddam, Middlesex Co., Connecticut, 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 ,

Reference for luminescence on the Internet:

Mineralogical reference on the Internet:

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

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

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