大阪市立大学 04492560 16 0 1 10 1973-00-00 1973-00-00 "Stannoidite-Canfieldite Association as Related to Vein Mineralization at the Ashio Copper Mine, Japan" "Nakamura,Takeshi Akiwa,Nobuyuki" Osaka City University Journal of geosciences, Osaka City University "Nakamura,Takeshi Akiwa,Nobuyuki"