Epidote from Marathon County, Wisconsin, USA
USA | |
| Wilson, G. (1958), Nephrite jade discovered in Wisconsin: Lapidary Journal: 12 (1): 76. |
| Falster, A.U., Buchholz, T.W., Simmons, W.B. (2010) High-Al titanite from an unusual mafic dike in Marathon County, Wisconsin. The 37th Rochester Mineralogical Symposium, April 15-18, 2010 |
| R&M 73:11-12 pp 378-399 Wisconsin Mineral Locality Index |