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USA | |
| Tschernich, Rudy W. (1992) Zeolites of the World. Geoscience Press, Inc., Phoenix, Arizona. 567pp. |
| BMC News, Sept. 2005 |
| (1917) Geology of Massachusetts and Rhode Island. Bulletin Vol. 597. US Geological Survey doi:10.3133/b597 |
| Gleba, Peter P. (2008) Massachusetts Mineral and Fossil Localities. Kreueger Enterprises, Inc. |
| Gleba, Peter P. (2008) Massachusetts Mineral and Fossil Localities. Kreueger Enterprises, Inc. Emerson, B. K (1882) The Deerfield Dyke and its minerals. American Journal of Science 3rd series XXIV:270-278,349-359. |
| P. Cristofono collection 2011 |
| (1917) Geology of Massachusetts and Rhode Island. Bulletin Vol. 597. US Geological Survey doi:10.3133/b597 |
| Cahoon, James C. (1985). Massachusetts: A Classic Swiss Alpine Cleft Mineral Region (Boston Mineralogical Symposium program book, May 1985) |
| |
| Cahoon, James C. (1985). Massachusetts: A Classic Swiss Alpine Cleft Mineral Region (Boston Mineralogical Symposium program book, May 1985) |
| P Cristofono collection 2010 |
| [var. Phacolite] Collected by L.White 1980 |
| Palache & Fraprie, Proc.Am.Acad.Arts.Sci. 38:383-393. |
| Tschernich, Rudy W. (1992) Zeolites of the World. Geoscience Press, Inc., Phoenix, Arizona. 567pp. Dana, Edward Salisbury (1892) A System of Mineralogy (6th ed.) |
| P. Cristofono collection |
| P. Cristofono collection |
| P Cristofono collection |
| P. Cristofono collection |
| Gleba, Peter P. (2008) Massachusetts Mineral and Fossil Localities. Kreueger Enterprises, Inc. |
Aggregate Industries Quarry, Ashland, Middlesex County, Massachusetts, USA