Talc from Lancaster County, Pennsylvania, USA
USA | |
| R. C. Smith II, The Mineralogy of Pennsylvania 1966-1975, Special Publication No. 1, Friends of Mineralogy Pennsylvania Chapter, 1978. |
| Rocks & Min.:60:243. |
The Mineralogy of Pennsylvania, 1875-1922 Samuel G. Gordon, Pg. 204. | |
Dana 6: 1069. | |
| Rocks & Min.: 20:530 21:671. |
Dana 6: 1069. |
Cedar Hill Quarry, Fulton Township, Lancaster County, Pennsylvania, USA