Tourmaline from West Virginia, USA
USA | |
| Zeitner, June Culp (1968) Appalachian Mineral & Gem Trails. Lapidary Journal, Inc. |
| Byron F. King (1932) American Mineralogist, 17, #10, 485-490. |
| Byron F. King (1932) American Mineralogist, 17, #10, 485-490. |
| Byron F. King (1932) American Mineralogist, 17, #10, 485-490. |
Overstreet, W.C. (1967) The Geologic Occurrence of Monazite. Geological Survey Professional Paper 530, United States Department of the Interior, 327 pages. | |
| Byron F. King (1932) American Mineralogist, 17, #10, 485-490. |
| Byron F. King (1932) American Mineralogist, 17, #10, 485-490. |