Present in Michigan County: Osceola, Mecosta; Geological Formation: Salina A-1 Evaporite; Specific Mine Name: 1989-2013; Commercial Mining History: 1989-2013; Published Literature: Anderson, R.J. and Egleson, G.C.,1970, Discovery of Potash in the A-1 Salina salt in Michigan, in Kellner, W.A., ed., Proceedings of the Sixth Annual Forum on The Geology of Industrial Minerals, Miscellany 1, Geological Survey Division, Michigan Department of Natural Resources, Lansing, MI, p. 15-19.; Unpublished Literature: Core analysis data at the Michigan Geological Survey reports mineralogical analyses of core samples from 19 wells of the Borgen bed in Osceola County ranged from 42% to 66% KCl; Comments: Interbedded with Halite. Very high grade Potash, [...]
