| Austria | |
- Friesach - Hüttenberg area
- Griesserhof (Gulitzen; Gullitzen)
| G. Niedermayr, I. Praetzel: Mineralien Kärntens, 1995 | | China | | |
| Yongrui Zhao and Yunqing Zhen (2006): Journal of Guilin University of Technology 26(3), 310-319 | |
| Yongrui Zhao and Yunqing Zhen (2006): Journal of Guilin University of Technology 26(3), 310-319 | | Germany | | |
| Beyer, H. (1978): Über Haldenfunde aus den Antimonitgängen von Ahrbrück (Eifel)..., Der Aufschluß, 29, 401-408 | | Greece | |
- Attikí (Attica; Attika) Prefecture
- Lavrion (Laurion; Laurium) District
- Lavrion (Laurion; Laurium)
| Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 749. | | Morocco | |
- Bou Azer District (Bou Azzer District)
| Favreau, G. and Dietrich, J. E. (2006). Die Mineralien von Bou Azzer. Lapis 31(7/8), 27-68 | | Spain | | |
| Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 749. | | USA | | |
| Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 77; Gross, E.B., Chesterman, C.W., Dunning, G.E., and Cooper, J.F. (1967) Mineralogy of the Kalkar quarry, Santa Cruz, California. California Division Mines and Geol. Special Report 92: 3-10; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 138. |
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