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Japan | |
| Yamada collection (Crystal World, Japan) |
| Dr. Matsuo Nambu collection (curated at Geological Survey of Japan) |
| Komura, Tamiji (1969): Feitknechtite and its origin from Noda-Tamagawa Mine, Iwate Prefecture, Japan. Ganseki Kobutsu Kosho Gakkaishi 59(3), 91-107 (in Japanese). Nambu, Matsuo Tanida, Katsutoshi Kitamura, Tsuyoshi Rocks & Min.:59:216. |
| Fuzimoto, M. (2006): Manganese minerals from manganese mines, Takachiho district, Miyazaki Prefecture. Part 2. Morowaku Mine. Chigaku Kenkyu 55(1), 3-10 (in Japanese). |
- Hamayokokawa mine (Hamayokogawa mine)
| Akira Kato (2011) Explanations of distributed specimens at the Ordinary Meeting of Mumeikai Group, No. 34 (January, 20011). |
| Akira Kato (2011) Explanations of distributed specimens at the Ordinary Meeting of Mumeikai Group, No. 34 (January, 20011). |
| Minerals Unlimited specimens (Ridgecrest, California) |
| Forrest Cureton specimens |
| Akira Kato (undated manuscript): Country rock and Minerals of the Kaso mine, Kanuma City, Tochigi Prefecture. (in japanese) |
Noda-Tamagawa mine, Noda, Kunohe-gun, Iwate Prefecture, Japan