Kelly, W. C., Rye, R. O., & Livnat, A. (1986). Saline minewaters of the Keweenaw Peninsula, northern Michigan; their nature, origin, and relation to similar deep waters in Precambrian crystalline rocks of the Canadian Shield.
American Journal of Science,
286(4), 281–308.
https://doi.org/10.2475/ajs.286.4.281