Tourmaline from selected localities.
USA | |
| MRDS database Dep. ID #10039466; MRDS ID #M050123. |
MRDS database Dep. ID #10039470; MRDS ID #M050131. | |
MRDS database Dep. ID #10092558, MRDS ID #M050130. | |
Simons, F.S. (1964) USGS Professional Paper 461; MRDS database Dep. ID #10039468. |