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USA | |
| [Chalcedony var. Agate] King, Van (n.d.) Personal communcation. |
| [Chalcedony var. Agate] (n.d.) |
| [Chalcedony var. Agate] Bullock, Kenneth C. (1981) Minerals and mineral localities of Utah. Bulletin 117. Utah Geological and Mineral Survey |
| Kasatkin, A. V., Plášil, J., Pekov, I. J., Belakovskiy, D. I., Nestola, F., Čejka, J., Vigasina, M. F., Zorzi, F., Thorne, B. (2015) Karpenkoite, Co3(V2O7)(OH)2·2H2O, a cobalt analogue of martyite from the Little Eva mine, Grand County, Utah, USA. Journal of GEOsciences, 60 (4) 251-257 Kasatkin, A. V., Plášil, J., Pekov, I. J., Belakovskiy, D. I., Nestola, F., Čejka, J., Vigasina, M. F., Zorzi, F., Thorne, B. (2015) Karpenkoite, Co3(V2O7)(OH)2·2H2O, a cobalt analogue of martyite from the Little Eva mine, Grand County, Utah, USA. Journal of GEOsciences, 60 (4) 251-257 |
| McCollam, Bridget E. (2002) Zippeites: Chemical characterization and powder X-ray diffraction studies of synthetic and natural samples. M.S. Thesis, Notre Dame University. |
The Poison Strip, Thompsons Mining District, Grand County, Utah, USA