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USA | |
| Palache(1935):26. |
| Palache, Charles (1935) The minerals of Franklin and Sterling Hill, Sussex County, New Jersey. Professional Paper 180. US Geological Survey doi:10.3133/pp180 |
| Warren Cummings, personal communication, 2007 |
| Dunn(1995):Pt4:535. Frondel, Clifford (1972) The Minerals of Franklin and Sterling Hill - A Check List. Wiley Interscience. Palache(1935):26 |
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| Baker, D.R. and Buddington, A.f. (1970) Geology and Magnetite Deposits of the Franklin Qudrangle and Part of the Hamburg Quadrangle, New Jersey. U.S. Geological Survey Professional Paper 638, 71 pages, at p. 53. |
| Jaszczak, John A. (1997), Unusual graphite crystals from the Lime Crest quarry, Sparta, New Jersey: Rocks & Minerals: 72(5): 330-334 |
| Zodac, P. (1946b), Rocks & Min.: 21:416-417. |
Edison Mine, Sparta Township, Sussex County, New Jersey, USA