Database of luminescent Minerals


ANTHOPHYLLITE


Chemical Formula: XMg7Si8O22(OH)2

Familly: Silicates

Status: IMA-A (GP)

Crystal System: Orthorhombic

Mineral for Display: No


Luminescence:


UV Type Main color Intensity Observation Frequency
Long Waves (365nm):      Violet Pink Strong
Short Waves (254 nm):      Violet Pink Strong

Short Waves Pictures (254nm)


 

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


No Data

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  


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


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(*):


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


Bibliographical Reference for luminescence:



Luminescence Reference on internet:



Mineralogical Reference on internet:


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

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

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