%0 Journal Article %T Mineralogy, geochemistry and geological occurrence of supergene manganese ore mineralization in North West Province, South Africa %A Pharoe, B.. %A Evdokimov, A.N. %A Gembitskaya, I.M. %A Baiyegunhi, C.. %A Nxantsiya, Z.. %K Supergene manganese ores, mineralogy, geochemistry, ore occurrence, romanechite, General Mine, weathering crust %J Russian Journal of Earth Sciences %D 2020 %N 20 %P 0 %I Geophysical Center of the Russian Academy of Sciences