Features of [sup.63,65]Cu NMR Spectra in the Local Field of Samples of CuFe[S.sub.2] Semiconductor Mineral from Oceanic Sulfide Deposits

The results of studying natural samples of CuFe[S.sub.2] chalcopyrite mineral from hydrothermal ore manifestations of island arcs of the Pacific Ocean by [sup.63]Cu nuclear magnetic resonance ([sup.63]Cu NMR) in a local field at room temperature are presented. The asymmetric shape of the detected resonance lines in the [sup.63]Cu NMR spectrum indicates the presence of at least two overlapping lines. The presence of two overlapping central components can be a consequence of the occurrence of regions with different types of structural distortion near the resonant nuclei. These results show that the pulsed [sup.63]Cu NMR method can be an effective method for studying the physical properties of deep-sea polymetallic sulfides of the global ocean.