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USA | |
| Manchester, James G. (1931) The Minerals of New York City and its Environs. Bulletin of the New York Mineralogical Club Vol. 3 (1) New York Mineralogical Club |
| Manchester, James G. (1931) The Minerals of New York City and its Environs. Bulletin of the New York Mineralogical Club Vol. 3 (1) New York Mineralogical Club .New York State Museum Bull. Nos. 249-250 (Sep-Oct 1921), Magnetic Iron Deposits of SE NY, Clarke, John M.: Index Map, 103. |
| The Geology of Orange Co., Geol. Survey of NY, Reis, Heinrich (1895): 451. |
| New York State Museum specimens |
| NY State Museum Bull. Nos. 249-250, Magnetic Iron Deposits of SE NY, Clarke, John M. (Sep-Oct 1921): 92. |
| NY State Museum Bull. Nos. 249-250, Magnetic Iron Deposits of SE NY, Clarke, John M. (Sep-Oct 1921): 92. |
| NY State Museum Bull. Nos. 249-250, Magnetic Iron Deposits of SE NY, Clarke, John M. (Sep-Oct 1921): 92. |
| Manchester, James G. (1931) The Minerals of New York City and its Environs. Bulletin of the New York Mineralogical Club Vol. 3 (1) New York Mineralogical Club |
| departments.colgate.edu (2006) http://departments.colgate.edu/geology/research/Rader&Peck06.pdf |
| Manchester, James G. (1931) The Minerals of New York City and its Environs. Bulletin of the New York Mineralogical Club Vol. 3 (1) New York Mineralogical Club |
| Geol. Survey of the State of NY, Geology of Orange Co., Roes, Heinrich (1895): 446. New York State Museum Bull. Nos. 249-250 (Sep-Oct 1921), Magnetic Iron Deposits of SE NY, Clarke, John M.: Index Map, 106-107 |
| NY State Museum Bull. Nos. 249-250, Magnetic Iron Deposits of SE NY, Clarke, John M. (Sep-Oct 1921): Index Map, 42, 78. |
| NY State Museum Bull. Nos. 249-250, Magnetic Iron Deposits of SE NY, Clarke, John M. (Sep-Oct 1921): 81. |
| Manchester, James G. (1931) The Minerals of New York City and its Environs. Bulletin of the New York Mineralogical Club Vol. 3 (1) New York Mineralogical Club |