|
USA | |
| Rocks & Minerals: Sept, 1998 |
- La Plata Mining District (California Mining District)
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| Eckel, Edwin Butt , Cobban, Robert R., Mosburg, Shirley K., Foord, Eugene E. (1997) Minerals of Colorado. Fulcrum Publishing. |
| Rocks & Minerals 82:368-380 |
| Eckel, Edwin Butt , Cobban, Robert R., Mosburg, Shirley K., Foord, Eugene E. (1997) Minerals of Colorado. Fulcrum Publishing. |
| Eckhard D. Stuart collected 9/12/15 |
| Northrop, Stuart A., LaBruzza, F.A. (1996) Minerals of New Mexico (3rd ed.) University of New Mexico Press, Albuquerque, NM. |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. Jahns, R. H. (1946) Mica Deposits of the Petaca District, Rio Arriba County, New Mexico. Bulletin 25. Mineral Resources Survey of New Mexico |