Database of luminescent Minerals

ANTHOPHYLLITE

Chemical Formula: XMg₇Si₈O₂₂(OH)₂

Familly: Silicates

Status: IMA-A (GP)

Crystal System: Orthorhombic

Mineral for Display: No

Luminescence:

Short Waves Pictures (254nm)

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

Phosphorescence (in the common meaning of the term) seen by naked eye:

Comments:

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.

Main Activator(s) and spectrum:

Most Common Activator: Mn²⁺

Peaks in the spectrum (nm):

band with a peak at 398nm,

513, 585nm 

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

Comments on activators and spectra:

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)

Best Locality for luminescence(*):

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

(*)Data are not exhaustive and are limited to the most important localities for fluorescence

Bibliographical Reference for 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 ,

Luminescence Reference on internet:

• Photoluminescence properties of anthophyllite, Aierken Sidike, Nuerrula Jilili, S. Kobayashi, K. Atobe and Nobuhiko Yamashita, Physics and Chemistry of Minerals, vol37 , 2009

 

Images:

 

• Talcville, New York, USA: http://www.mindat.org/photo-278698.html
• Talcville, New York, USA: http://www.mindat.org/photo-278693.html
• Nature s Rainbow

Mineralogical Reference on internet:

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

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

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