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USA | |
| Heinrich, E. W., Robinson, George Willard (2004) Mineralogy of Michigan (2nd ed.) A.E. Seaman Mineral Museum and Michigan Technological University. 252pp. |
| Rosemeyer, T. 2011 New from the Keweenaw: Part 4 - Recent Mineral Finds in Michigan's Copper Country. Rocks & Minerals 86:205-227 |
| Heinrich, E. W., Robinson, George Willard (2004) Mineralogy of Michigan (2nd ed.) A.E. Seaman Mineral Museum and Michigan Technological University. 252pp. |
| Morris Jr., T. (1983) Michigan Mineralogy: A Locality Index. Rocks & Minerals: 58(3): 109. |
| Rosemeyer, T. (2007) The Kearsarge: Copper-bearing Amygdaloidal Lode. Houghton and Keweenaw Counties, Michigan. Rocks & Minerals: 82(4): 276-297. |
| Heinrich, E. W., Robinson, George Willard (2004) Mineralogy of Michigan (2nd ed.) A.E. Seaman Mineral Museum and Michigan Technological University. 252pp. |
| Paul Brandes |
| Morris Jr., T. (1983) Michigan Mineralogy: A Locality Index. Rocks & Minerals: 58(3): 109. |
| Yalmer Primeau collection |
| Rocks & Min.: 13:137. |
| Rosemeyer, T. (2007) The Kearsarge: Copper-bearing Amygdaloidal Lode. Houghton and Keweenaw Counties, Michigan. Rocks & Minerals: 82(4): 276-297. |
No. 2 shaft, Centennial Mine, Centennial Heights, Calumet Township, Houghton County, Michigan, USA