Wad from Vermont, USA
USA | |
| Rocks & Min. Vol. 71, (1996) |
| Report of the state geologist on the mineral industries and geology of Vermont, Volume 8 By Vermont State Geologist (1912) |
| Rocks & Min. Vol. 71, (1996) |
Morrill & Chaffee, 1957. VT Mines & Mineral Localities | |
| Rocks & Min. Vol. 71, (1996) |
| Dana 4:479 (1854) |
| Morrill & Chaffee, 1957. VT Mines & Mineral Localities |