Magnesio-hornblende from selected localities.
USA | |
| Marian Lupulescu analyses, New York State Museum |
| George Robinson & Steven Chamberlain (2007) Gazetteer of major New York State mineral localities. Rocks & Minerals, 82, #6, 472-483.; Rocks & Minerals 82:472-483 |
Philips Mine, Town of Philipstown, Putnam County, New York, USA