Prehnite from selected localities.
USA | |
| Rocks & Min.:58:109 & 64:150. |
Mineralogy of Michigan (2004) Heinrich & Robinson | |
Mineralogy of Michigan (2004) Heinrich & Robinson | |
| USGS PP144 |
| Morris Jr., T. (1983) Michigan Mineralogy: A Locality Index. Rocks & Minerals: 58(3): 109. |
Yalmer Primeau Collection | |
| U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. |
USGS PP144 | |
Morris Jr., T. (1983) Michigan Mineralogy: A Locality Index. Rocks & Minerals: 58(3): 109. |
Osceola Mine, Osceola, Calumet Township, Houghton County, Michigan, USA