Hornblende Root Name Group from selected localities.
USA | |
| Emerson, B. K. (1895): A Mineralogical Lexicon of Franklin, Hampshire, and Hampden Counties, Massachusetts (USGS Bulletin 126). |
| Ticknor, 1855. Part II: A Gazetteer of New Hampshire; Rocks & Minerals (2005) 80:242-261 New Hampshire Mineral Locality Index |