Laser-induced time-resolved luminescence of orange kyanite Al2SiO5

Gaft M
Laser Detect Company, Petach Tikva, Israel

 Nagli L
School of Physics and Astronomy, Tel-Aviv University, Tel-Avive, Israel

Panczer G
Physical Chemistry of Luminenescence Materials Laboratory, Lyon 1 University, Villeurbanne, France

Rossman GR
Divisionof Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA

Reisfeld R
Faculty of Inorganic Chemistry, Hebrew University, Jerusalem, Israel


Manganese in the mineral kyanite has been detected by spectroscopic measurements. In this paper, we present laser-induced time-resolved luminescence and optical absorbance spectra of orange Mn-containing kyanite. It was proven that the orange color is caused by Mn3+. Several luminescence lines and bands were found and ascribed to Mn4+, Mn3+ emission centers. The spectroscopic technique can be utalized for detection of small amounts of manganese in minerals.

Kyanite, Tanzania
Kyanite from Mautia Hill, Tanzania, that contains Mn3+