Database of luminescent minerals 

Tiffany stone

Chemical formula: See FLUORITE

Family: Rock

Status: NR

Display mineral: NON

Luminescence:

Daylight picture

Tiffany Stone, Juab Co., Utah, USA ;
Col. G.Barmarin; Photo: G. Barmarin

Longwave (365nm) picture

Tiffany Stone, Juab Co., Utah, USA ; UVLW
Col. G.Barmarin; Photo: G. Barmarin

Shortwave (254nm) picture

Tiffany Stone, Juab Co., Utah, USA ; UVSW
Col. G.Barmarin; Photo: G. Barmarin

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

No data

Comments:

A mixture of Bertrandite, purple Fluorite, Chalcedony and clays.

Activator(s) and spectrum:

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

Peaks in the spectrum (nm):

UO₂²⁺ : 504, 524, 548, 572, 601nm

Col. G. Barmarin; Spectre: G. Barmarin

Comments on spectrum and activators:

Green fluorescence due to the presence of trace of uranium in chalcedony (Typical spectrum of Uranyl)

Best localities for fluorescence (*):

• Brush Beryllium Mine in Juab Co., Utah, USA;
• Spor Mountain deposit, Spor Mountain, Juab Co., Utah, USA;

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

Bibliographic reference for luminescence:

Mineralogical reference on the Internet:

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

  http://webmineral.com/data/Tiffany stone.shtml

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