|
USA | |
| Miller, 1971. RI Minerals & Their Locations |
| AmMin 12:427-436 (1927) |
| American Mineralogist (1927): 12: 427-436. |
| Miller, 1971. RI Minerals & Their Locations |
| Petrov, Alfredo (n.d.) Personal Communication. |
| American Minerologist, Volume 64, pages 151-255, 1979, Martin Rutstein |
| Miller, 1971. RI Minerals & Their Locations |
| Miller, 1971. RI Minerals & Their Locations |
| AmMin 11:334-340 |
| P. Cristofono collection |
| Gems & Minerals 395 (August, 1970). |
| George, Gilbert (1972). Latest Finds at Rhode Island Road Cuts(Micromounters of New England no. 17, Feb. 1972). |
| AmMin 11:334-340 |
| Rocks & Minerals (1986): 61: 286-289 |
| AmMin 3 p.1-2 |
| Quinn, A. W. and H. D. Glass (1958): Rank of coal and metamorphic grade of rocks of the Narragansett Basin of Rhode Island (Economic Geology 53(5): 563-576). |
Poker Hill, Ashton, Cumberland, Providence County, Rhode Island, USA