Cuprotungstite from
USA | |
| Dunning, G. E., Cooper, J. F. (2005) Mineralogy of the Spring Creek area, Last Chance mining district, Plumas County, California. Axis, 1 (1) 1-30 |
Collected July 2023 by Michael J. Feldman, XRF analyzed Aug. 2023 by David Lowe. | |
Dunning, G. E., Cooper, J. F. (2005) Mineralogy of the Spring Creek area, Last Chance mining district, Plumas County, California. Axis, 1 (1) 1-30 | |
| Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc. Van Nostrand Reinholt Press: 338. |
Plumas County, California, USA