Works of "Research Collection"
Place Collected: Suishoyama, Kawamata-machi, Date-gun, Fukushima
Place Collected: Hamayokokawa Mine
Place Collected: Hamayokokawa Mine Tatsuno-machi Kamiinagun Nagano Pref.
Place Collected: Masutomi-mura
Place Collected: Koganzan Heiko-gun Kogen-do
Place Collected: Kaso Mine
Place Collected: Karazawa Mine
Place Collected: Kochi Ishitoya-machi Heinuki-gun Iwate Pref.
Place Collected: Takarazawa Takanosu Mine Awano-machi Tochigi Pref.
Place Collected: Kiurazawa Mine Ashio-machi Kamitsuga-gun Tochigi Pref.
Place Collected: Suian-gun, Kokai-do = Hwanghae province
Place Collected: Suisheyama