Ankerite from Twin Peaks, Black Hawk Mining District, Big Burro Mountains, Grant County, New Mexico, USA
USA | |
| [Rocks & Minerals Vol 68 March/April 1993 p96] |
Northrop, Stuart A., LaBruzza, F.A. (1996) Minerals of New Mexico (3rd ed.) University of New Mexico Press, Albuquerque, NM. |