Electron paramagnetic resonance and optical absorption spectral studies on chalcocite.
A chalcocite mineral sample of Shaha, Congo is used in the present study. An electron paramagnetic resonance (EPR) study on powdered sample confirms the presence of Mn(II), Fe(III) and Cu(II). Optical absorption spectrum indicates that Fe(III) impurity is present in octahedral structure whereas Cu(II) is present in rhombically distorted octahedral environment. Mid-infrared results are due to water and sulphate fundamentals.
Reddy
S Lakshmi
SL
Department of Physics, SVD College, Kadapa, India. slreddy_in@yahoo.com
Fayazuddin
Md
M
Frost
Ray L
RL
Endo
Tamio
T
D003300:Copper; D004578:Electron Spin Resonance Spectroscopy; D008903:Minerals / Q000737:chemistry*; D055095:Optics and Photonics; D013056:Spectrophotometry, Ultraviolet; D019265:Spectroscopy, Near-Infrared; D013696:Temperature; D013816:Thermodynamics
D008903:Minerals; D003300:Copper