Pyromorphite from
USA | |
| Mineralogical Record, v. 28, no. 1, 1997 |
| The Mineralogical Record (1997): 28: 3-49. Grogan, R.M. (1946) An occurrence of pyromorphite in Illinois. American Mineralogist: 31: 320-322. |
| (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 |
| Rocks & Min.:63:359. |
USGS Bull 1042S | |
| Mineralogical Record (1997) 28:3-49 |
| Mineralogical Record (1997) 28:3-49 |
Mineralogical Record (1997) 28:3-49 |
Lafayette Mine, Frances, Crittenden County, Kentucky, USA