|
USA | |
| AmMin 11:334-340 |
| Miller, C. E. (1971) Rhode Island Minerals and Their Locations, O. D. Hermes, Ed., University of Rhode Island, Kingston |
| Miller. C. E. (1971) Rhode Island Minerals and Their Locations, University of Rhode Island, Kingston Rocks & Min.: 22:110. |
| Miller, C. E. (1971) Rhode Island Minerals and Their Locations, O. D. Hermes, Ed., University of Rhode Island, Kingston |
| Miller. C. E. (1971) Rhode Island Minerals and Their Locations, University of Rhode Island, Kingston |
| Rocks & Minerals (1986) 61:264-275 Rocks & Minerals (1986): 61: 286-289 Miller, C. E. (1971) Rhode Island Minerals and their Localities, O. D. Hermes, Ed., University of Rhode Island, Kingston |
| Michael W. Kieron collection |
| Miller. C. E. (1971) Rhode Island Minerals and Their Locations, University of Rhode Island, Kingston |
| AmMin 22:279 |
| Peter Dunn (1976) Genthelvite and the helvine group. Mineralogical Magazine, 4O:627-636 |
Grants Mills, Cumberland, Providence County, Rhode Island, USA