Fowlerite from North America Plate
Mexico | |
| Querol, F., 1986 Internal Penoles Mineralogical Report |
USA | |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| Castor, Stephen B., Ferdock, Gregory C. (2004) Minerals of Nevada. Special Publication 31. Nevada Bureau of Mines and Geology |
| Shepard, C. U. (1832) Treatise of Mineralogy |
King, Van (n.d.) Personal communcation. |
Franklin Mine, Franklin, Sussex County, New Jersey, USA