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USA | |
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| Jones, Robert W. (1960): Luminescent Minerals of Connecticut, A Guide to Their Properties and Locations. |
| Moritz, Harold (n.d.) Personal Communication. |
| Betts, John. (1999): The Quarries and Minerals of the Dayton Road District, South Glastonbury, Connecticut. Rocks and Minerals. Volume 74, Number 2. pp. 110-121. |
| Betts, John. (1999): The Quarries and Minerals of the Dayton Road District, South Glastonbury, Connecticut. Rocks and Minerals. Volume 74, Number 2. pp. 110-121. |
| Januzzi, 1976. Mineral Localities of CT and Southeastern NY State, p.148 |
| Betts (1999) Personally collected by Kevin Czaja. |
| Betts, John. (1999): The Quarries and Minerals of the Dayton Road District, South Glastonbury, Connecticut. Rocks and Minerals. Volume 74, Number 2. pp. 110-121. |
| P Cristofono collection |
| Davis, Fred E. and Stefan Nicolescu. (2011): Samarskite Rediscovered at the Spinelli Prospect, Glastonbury, Connecticut. Bulletin of the Peabody Museum of Natural History: 52(1):135-152 |
Simpson Quarry, South Glastonbury, Glastonbury, Hartford County, Connecticut, USA