|
USA | |
| Robert Whitmore collection |
| Bob Janules collection |
| Rocks & Minerals: 80: 252. |
| Moore, Paul B. (1973) Pegmatite Phosphates: Descriptive Mineralogy and Crystal Chemistry. The Mineralogical Record, 4 (3) 103-130 Palache, Charles, Berman, Harry, Frondel, Clifford (1951) The System of Mineralogy (7th ed.) Vol. 2 - Halides, Nitrates, Borates, Carbonates, Sulfates, Phosphates, Arsenates, Tungstates, Molybdates, Ect. John Wiley and Sons, New York. |
| Thompson, W. B., Falster, A. U., & Mortimer, T. J. (2022). The Keyes Mica Mines, Orange, Grafton County, New Hampshire. Rocks & Minerals, 97(4), 302-329. |
| Rocks & Minerals 80:4 pp234-241 |
Palermo No. 1 Mine, Groton, Grafton County, New Hampshire, USA