Calcite from selected localities.
USA | |
| Crowley, J.K. (1996) Mg- and K-bearing borates and associated evaporites at Eagle Borax Spring, Death Valley, California; a spectroscopic exploration. Economic Geology: 91: 622-635. |
| U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. |
| USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10033468. |