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Burnt amethyst

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Formula:
SiO2
A variety of Amethyst

Heated amethyst; the heating results in a yellow-orange, yellow-brown, or dark brownish colour. Often incorrectly sold as citrine.


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Chemical Properties of Burnt amethystHide

Formula:
SiO2

Other Language Names for Burnt amethystHide

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Burnt amethystHide

Reference List:
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Lehmann, G. (1972): Yellow color centers in natural and synthetic quartz. Physik der Kondensierten Materie 13, 297-306.
Neumann, E. & Schmetzer, K. (1984): Mechanism of thermal conversion of color and color centers by heat treatment of amethyst. Neues Jahrbuch fuer Mineralogie, Monatshefte 1984, 272-282.
Trindade, N. M.; Rubo, R. A.; Saeki, M. J. & Scalvi, R. M. F. (2006): Optical absorption of heat-treated amethyst. Revista Brasileira de Aplicacoes de Vacuo 25, 59-63.

Internet Links for Burnt amethystHide

Mineral and/or Locality  
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