Genthelvite from selected localities.
USA | |
| personal identification |
Miller, C. E. (1971) Rhode Island Minerals and their Localities, O. D. Hermes, Ed., University of Rhode Island, Kingston; Rocks & Minerals (1986) 61:264-275 | |
personal identification by Fred Schuster. | |
Peter Dunn (1976) Genthelvite and the helvine group. Mineralogical Magazine, 4O:627-636 |
Grants Mills, Cumberland, Providence County, Rhode Island, USA