Asbestos from Pennsylvania, USA
USA | |
| Dana, 1868, 778 |
www.libraries.psu.edu/emsl/guides/X/delaware.htm. | |
| Gordon's Mineralogy of Pennsylvania (1922) p. 191 |
Gordon, "Mineralogy of Pennsylvania" 1922 p. 193. | |
| Frazier, B.W. (1882), "On Crystals of Axinite from a Locality near Bethlehem, PA, etc.," Am.Jour.Sci., Vol. 3(24):439-447 |
| Frazier, B.W. (1882), "On Crystals of Axinite from a Locality near Bethlehem, PA, etc.," Am.Jour.Sci., Vol. 3(24):439-447 |
| Gordon, Mineralogy of Pennsylvania, 1922 p. 224 |
Ref.: Gordon, S.G. (1922) "The Mineralogy of Pennsylvania," Special Publication No. 1, The Academy of Natural Sciences of Philadelphia: p. 125. |