Amethyst from selected localities.
USA | |
| Percival, James Gates. (1822), Notice of the locality of sulphate of barytes from which a specimen was analysed by Mr. G. T. Bowen; and various other mineral localities in Berlin, Conn., American Journal of Science: s. 1, 5: 42-45. |
Fred Schuster; | |
| Schooner, Richard. (1961): The Mineralogy of Connecticut. Fluorescent House, Branford, Connecticut. |
| Januzzi, Ronald E. (1976), Mineral Localities of Connecticut and Southeastern New York State. The Mineralogical Press, Danbury, Connecticut. |
| P. Cristofono collection |
R.Shepard Collection | |
Harold Moritz collection | |
| Mike Polletta specimen |
Shepard Collection | |
| Hiller, John. (1967), unpublished sketch map. |
Hawthorne Drive, Berlin, Hartford County, Connecticut, USA