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USA | |
| Cook, Robert B., Smith, W. Everett (1982) Mineralogy of Alabama. Bulletin 120. Geological Survey of Alabama |
| Cook, Robert B., Smith, W. Everett (1982) Mineralogy of Alabama. Bulletin 120. Geological Survey of Alabama |
| Cook, Robert B., Smith, W. Everett (1982) Mineralogy of Alabama. Bulletin 120. Geological Survey of Alabama |
| Cook, Robert B., Smith, W. Everett (1982) Mineralogy of Alabama. Bulletin 120. Geological Survey of Alabama |
| Cook, Robert B., Smith, W. Everett (1982) Mineralogy of Alabama. Bulletin 120. Geological Survey of Alabama |
| Cook, Robert B., Smith, W. Everett (1982) Mineralogy of Alabama. Bulletin 120. Geological Survey of Alabama |
| Am.Min.: 35: 500-507 (1950), Milton, C. & Davidson, N.: 500 |
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| 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): 406. Rocks & Minerals 82:472-483 |
| Dietrich, R. V. (1990) Minerals of Virginia. Virginia Geological Survey. |
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Edenville, Town of Warwick, Orange County, New York, USA