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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 |
| New York State Museum Bull. Nos. 249-250 (Sep-Oct 1921), Magnetic Iron Deposits of SE NY, Clarke, John M.: Index Map, 103. |
| [var. Perthite] Frank Mazdab analyses on specimen field collected by Alfredo Petrov - https://www.rockptx.com/fkm-1-to-fkm-25/#FKM-21 |
| The Geology of Orange Co., Geol. Survey of NY, Reis, Heinrich (1895): 449. |
| Rhein property |
| 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 |
| The Geology of Orange Co., Geol. Survey of NY, Reis, Heinrich (1895): 448. |
| The Geology of Orange Co., Geol. Survey of NY, Reis, Heinrich (1895): 448. |
| 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): 455. |
| 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 |