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USA | |
| Collection of Mark A Gottlieb |
| Rocks & Min.: 70:379 |
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| Moritz, Harold (n.d.) Personal Communication. |
| Betts (1996)The Quarries and Minerals of South Glastonbury, Connecticut 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. |
| Rocks & Minerals (1995): 70: 398. |
| Rocks and Minerals (1999) 74:110-121 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. Observed in situ-David S. Bernstein 12/2010 |
| 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. Weber, Marcelle H., Sullivan, Earle C. (1995) Connecticut Mineral Locality Index. Rocks & Minerals, 70 (6) 396-409 doi:10.1080/00357529.1995.11761569 Rocks & Min., May 1998 |
| 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. |
Simpson Quarry, South Glastonbury, Glastonbury, Hartford County, Connecticut, USA