Luminescence, fluorescence et phosphorescence des minéraux: fiche descriptive

ANTHOPHYLLITE

Formule chimique: XMg₇Si₈O₂₂(OH)₂

Famille: Silicates

Statut: IMA-A (GP)

Système cristallin : Orthorhombique

Minéral de vitrine: NON

Luminescence:

Type d'UV	Couleur principale (*)	Intensité

UV longs (365nm):	Rose violacé	Forte
UV moyens (320 nm):	Rose violacé
UV courts (254 nm):	Rose violacé	Forte

(*)Vous pouvez ouvrir la charte des couleurs dans une nouvelle fenêtre

Photo Ondes Courtes (254nm)

Anthophyllite SW
Balmat Mine, Sylvia Lake, Fowler, St. Lawrence Co., New York, USA;
Photo & Col. © G. Barmarin

Phosphorescence (au sens commun du terme) observable à l'oeil nu:

Pas de données

Commentaires:

Material labelled tirodite from the International Talc Company mine, Talcville, New York, USA (Segeler, 1961), has been shown to be manganocummingtonite by electron microprobe (by Mike Hawkins, curator at the NY State Museum mineral collection). See further discussions at: http://www.mindat.org/mesg-7-206424.html

Additional material labeled tirodite from the International Talc Company mine, Talcville, New York, USA, was confirmed to be anthophyllite by XRD performed by John Attard on a sample submitted by John Duck in April, 2012.

Accordingly, without confirmation, the identity of similar material may be either manganocummingtonite or anthophyllite. Visual identification or identification by fluorescent response is not possible.

Activateur(s) et spectre(s):

Activateur le plus courant: Mn²⁺

Pics dans le spectre (nm):

band with a peak at 398nm,

513, 585nm

Mn²⁺ repl. Mg²⁺ : band peaking at 651-655 nm

Anthophyllite, Balmat, NY, USA.
Excitation: laser 405nm. Col. G. Barmarin; Spectre: G. Barmarin

Commentaires sur les spectres et les activateurs (*):

The photoluminescence spectra, optical excitation spectra and PL decay curves of anthophyllite from Canada were obtained at 300 and 10 K by Aierken Sidike and Al.. The MnO content in the sample, determined using an electron probe microanalyzer, was high at 5.77 wt%. In the photoluminescence spectra obtained under 410nm excitation, bright red bands with peaks at 651 and 659nm were observed at 300 and 10 K, respectively. The origin of the red luminescence was ascribed to Mn2+ in anthophyllite from the analysis of the excitation spectra and photoluminescence decay times of 6,1–6,6 ms. In the PL spectra obtained under 240nm excitation at 300 K, a small violet band with a peak at 398 nm was observed. On the violet band at 10 K, a vibronic structure was observed. The origin of the violet luminescence was attributed to a minor impurity in anthophyllite.
(Source: Photoluminescence properties of anthophyllite, Aierken Sidike, Nuerrula Jilili, S. Kobayashi, K. Atobe and Nobuhiko Yamashita, Physics and Chemistry of Minerals, vol37 , 2009)

(*)Les commentaires sur les spectres sont uniquement rédigés en Anglais

Meilleure(s) localité(s) pour la fluorescence (*):

International Talc Company Mine (Reynolds Mine), Talcville, St. Lawrence Co., New York, USA;
Balmat Mine, Sylvia Lake, Fowler, St. Lawrence Co., New York, USA;

(*)Les données ne sont pas exhaustives et sont limitées à quelques localités remarquables pour la fluorescence

Référence bibliographique pour la luminescence:

The Henkel Glossary of Fluorescent Minerals, Dr. Gerhard Henkel, Published by the FMS, 1989 ,
Fluorescence: Gems and Minerals Under Ultraviolet Light, Manuel Robbins, 1994, Geoscience Press, ISBN 0-945005-13-X ,
The World of Fluorescent Minerals, Stuart Schneider, Schiffer Publishing, 2006, ISBN 0-7643-2544-2 ,
Luminescent Spectra of Minerals, Boris S. Gorobets and Alexandre A. Rogojine, Moscow, 2002 ,