Zoning in ore bodies,ore deposits and ore regions are recognized astemporal-spatial structures generated by the dynamics of ore-forming processes.Viewed from th
Chevkinite specimen from a rare-earth mineral deposit in Sichuan,southwest ofChina have been studied in detail by means of transmission electron microscope(TEM).T
Biostratigraphical data indicate that in the neritic facies areas of South China, the Devonian-Carboniferous boundary (DCB), matching the boundary between conod