Laumontite from selected localities.
USA | |
| [var: Leonhardite] Gilpin R. Robinson, Jr. and C. M. Sears (1992) Inventory of Metal Mines and Occurrences Associated with the early Mesozoic Basins of the Eastern United States II., USGS Open-File Report 92-448 |
| MRH collection, ref J. A. Dauge |
Silver Hill Quarry, Bowmansville, Brecknock Township, Lancaster County, Pennsylvania, USA