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USA | |
| [var. Agate] Gleba, Peter P. (2008) Massachusetts Mineral and Fossil Localities. Kreueger Enterprises, Inc. |
| Gleba, Peter P. (2008) Massachusetts Mineral and Fossil Localities. Kreueger Enterprises, Inc. |
| [var. Agate] Gleba, Peter P. (2008) Massachusetts Mineral and Fossil Localities. Kreueger Enterprises, Inc. |
| [var. Agate] |
| Emerson, B. K. (1899). Geology of Eastern Berkshire County, Mass. (USGS Bulletin 159). |
| King, Van (n.d.) Personal communcation. |
| [var. Agate] Western Massachusetts Geologic Resource Inventory, 3rd Ed., Alan R. Plante (Privately Published), 1994 |
| Gleba, Peter P. (2008) Massachusetts Mineral and Fossil Localities. Kreueger Enterprises, Inc. |
| |
| Gleba, Peter P. (2008) Massachusetts Mineral and Fossil Localities. Kreueger Enterprises, Inc. |
| Sears, John Henry (1905): The Physical Geography, Geology, Mineralogy and Paleontology of Essex County |
| Sears, John Henry (1905): The Physical Geography, Geology, Mineralogy and Paleontology of Essex County |
| [var. Carnelian] Hitchcock, Edward (1858): Catalogue [of the collection of rocks, minerals, and fossils in the state collection] in Annual report of the Secretary of the Board of Agriculture, Volume 6 (Boston: Massachusetts State Board of Agriculture, 1859) |
| Gleba, Peter P. (2008) Massachusetts Mineral and Fossil Localities. Kreueger Enterprises, Inc. P Cristofono collection |
| Kunz, 1892. Gems & Precious Stones of N. America, p.133. |
| collection of Springfield museum natural history |
| [var. Agate] Day, David T. (1888). Mineral Resources of the United States, Calendar Year 1887 (Washington, DC: USGS) |
| [var. Agate] Gleba, Peter P. (2008) Massachusetts Mineral and Fossil Localities. Kreueger Enterprises, Inc. |
| P Cristofono collection, 2008 |
| Dana, 1854. A System of Mineralogy, 4th ed. |
| P. Cristofono collection, 2014 |
| Gleba, Peter P. (2008) Massachusetts Mineral and Fossil Localities. Kreueger Enterprises, Inc. |
| Gleba, Peter P. (2008) Massachusetts Mineral and Fossil Localities. Kreueger Enterprises, Inc. |
| P. Cristofono collection, 2013 |
| [var. Agate] Gleba, Peter P. (2008) Massachusetts Mineral and Fossil Localities. Kreueger Enterprises, Inc. |
| [var. Agate] Hitchcock, Edward (1841). Final report on the geology of Massachusetts, p. 186. |
| Gleba, Peter P. (2008) Massachusetts Mineral and Fossil Localities. Kreueger Enterprises, Inc. Rocks & Min.: 22:209. |
Loudville Lead Mines, Easthampton, Hampshire County, Massachusetts, USA