Cookeite from selected localities.
USA | |
| Fisher, J. 2002. Gem and rare-element pegmatites of southern California. Mineralogical Record, Volume 33, Number 5: pages 390-396, photographs. |
| Weber, F. H. 1963. Geology and mineral resources of San Diego County, California. California Division of Mines and Geology, County Report 3: pages 89-91; illus., maps. |
Esmeralda Mine, Mesa Grande, Mesa Grande Mining District, San Diego County, California, USA