|
USA | |
| Stuart Herring |
| [var. Picrolite] Mineralogy of Pennsylvania - 1922 Samual S. Gordon, pg. 173 |
| 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 |
| Jefferis, W.W. (1893) Localities of Chester County, Proceedings, Academy of Natural Science of Philadelphia, 34: 187. |
| [var. Marmolite] Dana 6: 1067. |
| [var. Marmolite] Dana 6: 1067. |
| Mineralogy of Pennsylvania-1922 Samuel S. Gordon, pg. 181 |
| Dana 6: 1068. |
Chester County, Pennsylvania, USA