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Spectral Studies of Divalent Copper in Antlerite Mineral
Author(s) -
Rama Subba Reddy R.,
Lakshmi Reddy S.,
Siva Reddy G.,
Reddy B.J.
Publication year - 2002
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/1521-4079(200205)37:5<485::aid-crat485>3.0.co;2-e
Subject(s) - electron paramagnetic resonance , copper , mineral , spectral line , divalent , chemistry , octahedron , octahedral symmetry , absorption spectroscopy , absorption (acoustics) , infrared spectroscopy , crystallography , analytical chemistry (journal) , paramagnetism , nuclear magnetic resonance , materials science , crystal structure , ion , condensed matter physics , optics , physics , organic chemistry , chromatography , astronomy , composite material
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 (D 2h ) octahedral symmetry with g 1 = 2.36, g 2 = 2.16 and g 3 = 2.07. The NIR spectra of antlerite are attributed to water fundamentals.