|
USA | |
| Mineralogy of Pennsylvania - 1922 Samual S. Gordon, pg. 173 |
| Dana 6: 1068. |
| Rocks & Min.:64:7. Mineralogical Record, 25(2),pp:105-120. |
| Dana 6:471,1068. |
| Dana 6: 446, 1068. |
| Dana 6:1068. |
| Piatak, N. M., & Seal II, R. R. (2012). Mineralogy and environmental geochemistry of historical iron slag, Hopewell Furnace National Historic Site, Pennsylvania, USA. Applied geochemistry, 27(3), 623-643. |
| Piatak, N. M., & Seal II, R. R. (2012). Mineralogy and environmental geochemistry of historical iron slag, Hopewell Furnace National Historic Site, Pennsylvania, USA. Applied geochemistry, 27(3), 623-643. |
| Mineralogy of Pennsylvania-1922 Samuel S. Gordon, pg. 178 |
| Bruce T. Mitchell |
| The Mineralogy of Pennsylvania - 1922: Samuel G. Gordon, Pg. 189 |
French Creek Mines, Saint Peters, Warwick Township, Chester County, Pennsylvania, USA