Jasper from Shasta County, California, USA
USA | |
| [var. Creolite] Merrill, G. P., Moodey, M. W., & Wherry, E. T. (1922). Handbook and descriptive catalogue of the collections of gems and precious stones in the United States National Museum (No. 118). US Government Printing Office. |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |