Opal-AN from Hudson County, New Jersey, USA
USA | |
| Manchester, James G. (1931) The Minerals of New York City and its Environs. Bulletin of the New York Mineralogical Club Vol. 3 (1) New York Mineralogical Club Canfield (1889). |
| Mins. of NYC & Its Environs, NY Min. Club., Vol. 3 (1931), edited by J.G. Manchester |