|
USA | |
|
| Gleba, 1978. Massachusetts Mineral & Fossil Localities |
|
| Dana 4:284 (1854) |
|
| Mins. of NYC & Its Environs, NY Min. Club Bull. Vol 3, No. 1, Manchester, J.G. (1931): 31. |
|
| The Minerals of New York City & Its Environs, New York Mineralogical Club Bull. Vol. 3, No. 1, Manchester, J.G. (1931): 84. |
|
| The Minerals of New York City & Its Environs, New York Mineralogical Club Bull., Vol. 3, No. 1, Manchester, J.G. (1931): 30. |
|
| Jensen (1978) Minerals of New York State, pp.42-43 |
|
| Dana 6:1075. |
|
| Wilson,W.F and McKenzie,B.J,1978, Mineral Collecting Sites in North Carolina ,Information Circular 24 |
|
| Dana 6: 1067. |
|
| Dana 6: 1067. |
|
| www.libraries.psu.edu/emsl/guides/X/delaware.htm. |
|
| Dana 6:1069. |