|
USA | |
| Rocks & Min.: 61:138 & 64:7. |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| Erd, Richard C., Greenberg, Seymour S. (1960) Minerals of Indiana. Bulletin 18. Indiana Geological Survey Rocks & Min.: 61:138-142 & 64:230. |
- Blue River Group Outcrop Area
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. Erd, Richard C., Greenberg, Seymour S. (1960) Minerals of Indiana. Bulletin 18. Indiana Geological Survey |
- Blue River Group Outcrop Area
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| Mineral News (1994) 10:8 pp4,8 Erd, Richard C., Greenberg, Seymour S. (1960) Minerals of Indiana. Bulletin 18. Indiana Geological Survey T. Kennedy collection Midwest Chapter Newsletter Volume 29 No.6:10 |
| |
| Erd, Richard C., Greenberg, Seymour S. (1960) Minerals of Indiana. Bulletin 18. Indiana Geological Survey |
| Erd, Richard C., Greenberg, Seymour S. (1960) Minerals of Indiana. Bulletin 18. Indiana Geological Survey |
| www.mineralcollecting.org (n.d.) http://www.mineralcollecting.org/forum/master.cgi?action=ViewPost&post=255. |
| Erd, Richard C., Greenberg, Seymour S. (1960) Minerals of Indiana. Bulletin 18. Indiana Geological Survey |
| Christopher Clemens |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| www.indiana.edu |
| Gems and Minerals of America- Jay Ellis Ransom-1974 |
| Erd, Richard C., Greenberg, Seymour S. (1960) Minerals of Indiana. Bulletin 18. Indiana Geological Survey Rocks & Min.:61:150. |
| Erd, Richard C., Greenberg, Seymour S. (1960) Minerals of Indiana. Bulletin 18. Indiana Geological Survey |
| Wells(1983). Rocks & Min.:61:150 |
Corydon Stone Co. Quarry, Corydon, Harrison County, Indiana, USA