Ottrélite 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 |
| Rocks & Min.: 60: 92. |
| Rocks & Min.: 60:92. |
| Wilson, W.F., McKenzie, B.J. (1978) Mineral Collecting Sites in North Carolina. Information Circular 24. North Carolina Division of Mineral Resources |
| Rocks & Min.:60:93. |