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Japan | |
| Dr. Yohachiro Okamoto collection (curated at Geological Survey museum, Japan) |
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North Korea | |
| Shibata, H.: Lithia mica deposits in Korea with special reference to spodumene and amblygonite. (in: Geology and Mineral Resources of the Far East, University of Tokyo Press, 1969 pp 158-168) |
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Russia | |
| [Lapis 1993:1 p13-15] |
| Grant, Raymond W. (2001) 22nd Annual FM-TGMS-MSA Mineralogical Symposium: The Minerals of Russia (Abstracts) The Mineralogical Record, 32 (1) 39-47 |
| International Geological Congress (2008) MRD-06 The Sosedka gem tourmaline-rich mine: Emplacement of extremely chemically heterogeneous pegmatite-forming medium |
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South Korea | |
| Shibata, H.: Lithia mica deposits in Korea with special reference to spodumene and amblygonite. (in: Geology and Mineral Resources of the Far East, University of Tokyo Press, 1969 pp 158-168) |
- North Chungcheong Province
| Kinosaki, Y. (1942) Miscelaneous Reports of the Geological Survey, Government-General of Korea, no. 11, 35. |
Sosedka pegmatite vein, Malkhan pegmatite field, Krasnyi Chikoy, Krasnochikoysky District, Zabaykalsky Krai, Russia