Biotite from selected localities.
USA | |
| MRDS database Dep. ID #10048342, MRDS ID #M899929. |
Singer, D.A., Berger, V.I., and Moring, B.C. (2008): US Geological Survey Open-File Report 2008-1155. | |
| rolf luetcke |
| Schrader, F.C. & J.M. Hill (1915), Mineral deposits of the Santa Rita and Patagonia Mountains, Arizona, USGS Bull. 582: 222-226. |
| MRDS database Dep. ID file #10046337, MRDS ID #M241330. |