Feldspar Group from selected localities.
USA | |
| Kunz, G. F. 1905. Gems, jeweler's materials, and ornamental stones of California. California State Mining Bureau bulletin 37: pages 140-142. |
Fender, Michael and Allison, Terry (2007) | |
Weber, F. H. 1963. Geology and mineral resources of San Diego County, California. California Division of Mines and Geology, County Report 3: pages 99, 105, 108; plate 5. | |
San Diego Mining Company (1996), Field investigations of the Sunshine Valley area; undocumented pegmatites and gemstone prospects. Ramona, San Diego County, California. | |
[var: Perthite] www.minsocam.org/MSA/Special/Pig/PIG_CQ/JPat_reply.pdf. | |
Kunz, G. F. (1905), Gems, jeweler's materials, and ornamental stones of California. California State Mining Bureau bulletin 37: p. 148-49. |