日本岩石鉱物鉱床学会
にっぽんがんじきこうぶつこうしょうがっかい
Japanese Association of Mineralogists, Petrologists and Economic Geologists
岩石学 is read as がんせきがく (gansekigaku) and means petrology.
がんせきがく
gansekigaku
にっぽんがんじきこうぶつこうしょうがっかい
Japanese Association of Mineralogists, Petrologists and Economic Geologists