Stilbite Subgroup from Chester County, Pennsylvania, USA
USA | |
| Dana 6:471,1068. |
Dana 6: 446, 1068. | |
Mineralogy of Pennsylvania-1922 Samuel S. Gordon, pg. 179 |
USA | |
| Dana 6:471,1068. |
Dana 6: 446, 1068. | |
Mineralogy of Pennsylvania-1922 Samuel S. Gordon, pg. 179 |