Powellite from North Carolina, USA
USA | |
| Wilson, W.F., McKenzie, B.J. (1978) Mineral Collecting Sites in North Carolina. Information Circular 24. North Carolina Division of Mineral Resources |
| C.W. Allen collection |
USA | |
| Wilson, W.F., McKenzie, B.J. (1978) Mineral Collecting Sites in North Carolina. Information Circular 24. North Carolina Division of Mineral Resources |
| C.W. Allen collection |
Tungsten Queen Mine and plant, Tungsten, Hamme Tungsten Mining District, Vance County, North Carolina, USA