| Antarctica | AmMin 36:361-367 | | AmMin 36:361-367 | | China | | |
| Da-Xin Li and Yi-Ming Zhao (1997): Acta Petrologica et Mineralogica 16(1), 44-49. | | Japan | | |
| Dr. Kameki Kinoshita collection (curated at Geological Survey of Japan) | | Slovakia | | |
| Koděra, M. et al., 1986 a 1990 : Topografická mineralógia Slovenska, diel 1- 3, Veda – Vydavateľstvo SAV, Bratislava, 1990, 1 – 1590k | | Switzerland | |
- Grischun (Grisons; Graubünden)
| Stalder, H. A., Wagner, A., Graeser, S. and Stuker, P. (1998): "Mineralienlexikon der Schweiz", Wepf (Basel), p. 382. | | USA | | |
| The Minerals of New York City & Its Environs, New York Mineralogical Club Bull., Vol. 3, No. 1, Manchester, J.G. (1931): 70. | |
| The Minerals of New York City & Its Environs, New York Mineralogical Club Bull. Vol. 3, No. 1, Manchester, J.G. (1931): 90. |
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