| Germany | | |
| F. Müller: "Bayerns steinreiche Ecke", 2nd ed., Oberfränkische Verlagsanstalt (Hof), 1984 | |
| F. Müller: "Bayerns steinreiche Ecke", 2nd ed., Oberfränkische Verlagsanstalt (Hof), 1984 | |
| F. Müller: "Bayerns steinreiche Ecke", 2nd ed., Oberfränkische Verlagsanstalt (Hof), 1984 | |
| F. Müller: "Bayerns steinreiche Ecke", 2nd ed., Oberfränkische Verlagsanstalt (Hof), 1984 | |
| F. Müller: "Bayerns steinreiche Ecke", 2nd ed., Oberfränkische Verlagsanstalt (Hof), 1984 | |
| F. Müller: "Bayerns steinreiche Ecke", 2nd ed., Oberfränkische Verlagsanstalt (Hof), 1984 | |
| F. Müller: "Bayerns steinreiche Ecke", 2nd ed., Oberfränkische Verlagsanstalt (Hof), 1984 | |
| F. Müller: "Bayerns steinreiche Ecke", 2nd ed., Oberfränkische Verlagsanstalt (Hof), 1984 | |
| F. Müller: "Bayerns steinreiche Ecke", 2nd ed., Oberfränkische Verlagsanstalt (Hof), 1984 | |
| F. Müller: "Bayerns steinreiche Ecke", 2nd ed., Oberfränkische Verlagsanstalt (Hof), 1984 | | USA | | |
| U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. | |
| U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. | |
| U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. | |
| U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. | |
| U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. | |
| U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. | |
| U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. | |
| U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. | |
| U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. | |
| U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. | |
| U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. | |
| U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. | |
| U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. | |
| U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. | |
| U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. | |
| U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. | |
| U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. | |
| U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. | |
| U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. | |
| U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. | |
| U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. |
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