|
|||||
|
|
Optical absorption and EPR spectral studies of vauquelinite |
|
| Authors: | K Nagamuni Reddy G Siva Reddy S Lakshmi Reddy P S Rao |
| Abstract: | Vauquelinite ‐ a mineral ‐ was investigated by EPR, NIR and optical spectroscopic techniques. EPR studies on powder sample confirm the presence of Cu(II) and Fe(III) impurity in the mineral. Optical absorption spectrum also indicates that Cu(II) impurity is present in rhombically distorted octahedral structure and Fe(III) in octahedral structure. NIR results are due to water fundamentals and phosphate combination tone. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim) |
| Keywords: | optical properties EPR vauquelinite |