Calcite from selected localities.
USA | |
| Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 410; Frondel, C. (1935), Catalog of mineral pseudomorphs in the American Museum, Bull.Amer.Mus.Nat.Hist. 67. |
| Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 7. |