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Canada | |
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| Ronnie Van Dommelen collection |
|
| Spence, H. S (1932) Feldspar, Canada Mines Branch Publication 731 |
- Hastings Highlands Municipality
| Sabina, Ann P. (1986) Rocks and minerals for the collector: Bancroft - Parry Sound area and southern Ontario. Miscellaneous report 39. Geological Survey of Canada doi:10.4095/121046 |
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| Spence, H. S (1932) Feldspar, Canada Mines Branch Publication 731 |
|
| Spence, H. S (1932) Feldspar, Canada Mines Branch Publication 731 |
|
Greenland | |
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| Bøggild, O. B. (1953) The Mineralogy of Greenland. Meddelelser om Grønland Vol. 149 (3) C.A.Reitzel |
|
USA | |
|
| https://www.mindat.org/photo-1347997.html |
- South Platte Pegmatite Mining District
| Rhiana E. Henry, Charles Stern, Markus B. Raschke, Julien M. Allaz,Evan J. D. Anderson, Alexandra Skewes (2016) Rare Earth Element Pegmatites in the South Platte Region of Colorado. in Second Eugene E. Foord Pegmatite Symposium July 15-19, 2016 Colorado School of Mines campus, Golden, Colorado |
|
| Markus B. Raschke, Evan J. D. Anderson, Alexandra Skewes, Julien M. Allaz, Charles Stern, Philip M. Persson, Rhiana Henry, Katharina Pfaff (2016) Mineralogy and petrology of a new REE pegmatite near Wellington Lake, in relation to the South Platte Pegmatite district, Colorado (USA). in Second Eugene E. Foord Pegmatite Symposium July 15-19, 2016 Colorado School of Mines campus, Golden, Colorado |
|
| Erik Vercammen field observation and collection |
|
| |
|
| Furchron, A. S., Teague, Kefton H. (1943) Mica-Bearing Pegmatites of Georgia. Bulletin 48. Geological Survey of Georgia |
|
| E.L. Clopton collection #ELC 893, 894, 895 |
- West Mount Apatite Mining District
| E.L. Clopton collection #1504 |
|
| Dionne, Dick & Birtic, Cal & Jacobson, Mark. (2014) The Perry petalite prospect of Peru, Maine.. Mineral News. 30. 6,8,9,11,13. |
|
| E.L. Clopton collection #1160, 1161, 1234 |
|
| Page, J. J., and Larrabee, D. M. (1962). Beryl Resources of New Hampshire, USGS Professional Paper 353, 43-44. |
|
| E.L. Clopton collection #466 |
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| E.L. Clopton collection #429 |
|
| E.L. Clopton collection #376 |
|
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
Academy, Fresno County, California, USA