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USA | |
| F. J. Fohs (1907) The Fluorspar Deposits of Kentucky. KGS Bull 9 296pp. |
| Hardin, George C., Jr. (1955) Fluorspar deposits in western Kentucky, part 1: Babb fault system, Crittenden and Livingston Counties. USGS Bulletin 1012B |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| Goldstein, Alan (2006) Kentucky Mineral: Locality Index. Rocks & Minerals, 81 (6) 420-440 doi:10.3200/rmin.81.6.420-440 (2005) Mineral Resources Data System (MRDS), US Geological Survey. USGS Bull 1042S |
| Goldstein, Alan (2006) Kentucky Mineral: Locality Index. Rocks & Minerals, 81 (6) 420-440 doi:10.3200/rmin.81.6.420-440 |
| Goldstein, Alan (2006) Kentucky Mineral: Locality Index. Rocks & Minerals, 81 (6) 420-440 doi:10.3200/rmin.81.6.420-440 |
| F. J. Fohs (1907) The Fluorspar Deposits of Kentucky. KGS Bull 9 296pp. |
| Collected by Alan Goldstein |
| Goldstein, Alan (2006) Kentucky Mineral: Locality Index. Rocks & Minerals, 81 (6) 420-440 doi:10.3200/rmin.81.6.420-440 USGS Professional Paper 36 |
| Goldstein, Alan (2006) Kentucky Mineral: Locality Index. Rocks & Minerals, 81 (6) 420-440 doi:10.3200/rmin.81.6.420-440 |
| [var. Smoky Quartz] Goldstein, Alan (2006) Kentucky Mineral: Locality Index. Rocks & Minerals, 81 (6) 420-440 doi:10.3200/rmin.81.6.420-440 Mineralogical Record (1997) 28:3-49 Rocks & Min.:63:359. |
| Personal observation by Alan Goldstein. |
| F. J. Fohs (1907) The Fluorspar Deposits of Kentucky. KGS Bull 9 296pp. |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
Columbia mine, Marion, Crittenden County, Kentucky, USA