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| Betts, John (n.d.) John Betts website listing. |
| "Western Massachusetts Mineral Localities" by Plante, A.R., Valley Geology Press, 1992 |
| www.treasuremountainmining.com |
| Plante, Alan (1992): Western Massachusetts Mineral Localities (Valley Geology Press) |
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| "Western Massachuetts Mineral Localites" by Plante, A.R., Valley Geology Press, 1992 |
| Museum of Natural History, Roger Williams Park, Providence, R.I. M606a 2498 |
| Harvard Museum of Natural History, no.117812 |
Erving, Franklin County, Massachusetts, USA