Database of luminescent minerals 

amazonite

Chemical formula: See MICROCLINE

Family: Silicates

Status: NR

Crystal system : Triclinic

Display mineral: NON

Luminescence:

Daylight picture

Amazonite, Pikes Peak, El Paso Co., Colorado, USA;
Col. G.Barmarin; Photo: G. Barmarin

Shortwave (254nm) picture

Amazonite, Pikes Peak, El Paso Co., Colorado, 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

Thermoluminescence: OUI

Comments:

Greenish-blue variety of Microcline.

Activator(s) and spectrum:

Activator(s): Fe³⁺,

No spectrum yet

Comments on spectrum and activators:

Green and red emissions are respectively associated with the presence of Mn and Fe impurities

It is admitted that the intensity of the green daylight colour is directly linked to the Rb/Pb ratio content in addition to the presence of structural defects, point defects (due to Fe, Tl, Na, etc.), redox reactions (charge transfer between Fe3þ and Pb2þ associated with a H2O molecule), strain etc, due to the amazonite grows during the late stages of the pegmatite process (Petrov et al., 1993; Hofmeister and Rossman, 1986; Vaggelli et al., 2005).
(Source: Study of the luminescence properties of a natural amazonite, V. Correcher, 2011)

See also Microcline

Best localities for fluorescence (*):

• Pikes Peak, El Paso Co., Colorado, USA;
• Teller County, Colorado, USA;
• Konso, Sidamo-Borana Region, Ethiopia;
• Kenticha, Negele area, Sidamo  Ethiopia (2002);
• Kintore Open Cut, Broken Hill, New South Wales, Australia (bluish white SW);
• Minas Gerais, Brazil (Many places/Divers gisements)

(*)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=Amazonite

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

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