Crystal Research and Technology
Cryst. Res. Technol. 37 (2002) 485 - Abstract -

R. Rama Subba Reddy, S. Lakshmi Reddy*, G. Siva Reddy, B. J. Reddy**

Dept. of Chemistry, S.V.U.P.G.Centre, Cuddapah 516 001, India
*Dept. of Physics S.V.D.College, Cuddapah 516 003, India
**Dept. of Physics S.V.University, Tirupathi 517 502, India

Spectral Studies of Divalent Copper in Antlerite Mineral

Electron paramagnetic resonance (EPR) spectra on antlerite mineral are recorded both at RT & LNT. Optical absorption spectra are recorded from 200 – 2500 nm at RT. The chemical analysis of antlerite reveals that the concentration of CuO in the mineral is 67.30 wt%. Optical absorption spectrum of antlerite shows four bands, which are mainly due to Cu(II). EPR and optical results of the antlerite sample confirmed that Cu(II) is in rhombically distorted (D2h) octahedral symmetry with gl = 2.36, g2 = 2.16 and g3 = 2.07. The NIR spectra of antlerite are attributed to water fundamentals.

Keywords: spectral studies, valent cope, antlerite


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