|
USA | |
| Dave Maietta |
| Mineralogy of Michigan, Heinrich, Robinson. Chlorite group minerals in the Keweenaw are in the chamosite- clinochlore series with the dark green to black being chamosite and the light tan to gray being clinochlore. Personal communication with George Robinson. |
| Rosemeyer, T. (1996) The Cliff: America's First Native Copper Mine. Rocks & Minerals: 71(6): 381-390. |
| Paul T. Brandes |
| Rosemeyer, T. (2022). News from the Keweenaw: Part 5—Recent Mineral Finds in Michigan’s Copper Country: Twenty-ninth in a series of articles on the mines and minerals of Michigan’s Copper Country. Rocks & Minerals, 97(4), 354-363. |
| Larry Maltby, The Mineralogy of Michigan, Henrich-Robinson describes the chlorite in Keweenaw Co. as chamosite forming a solid solution series with clinochlore. The dark green to black chlorite has consistently proven to be chamosite. |
| Heinrich, E. W., Robinson, George Willard (2004) Mineralogy of Michigan (2nd ed.) A.E. Seaman Mineral Museum and Michigan Technological University. 252pp. |
Central Mine, Central, Houghton Township, Keweenaw County, Michigan, USA