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
Abstract
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 from Mautia Hill, Tanzania, that contains
Mn
3+