Chlorite Group from selected localities.
USA | |
| Heyl, A. & Pearre, N (1965) Copper, zinc, lead, iron cobalt and barite deposits of the Piedmont Upland in Maryland: Maryland Geological Survey: Bulletin 28, 72 p. |
Stuart Herring | |
| Mines of the Washington D.C Area; Econ Geol (1989) 84:663-675 |
Stuart Herring | |
Stuart Herring | |
| Econ Geol (1989) 84:663-675 |
Mines of the Washington D.C Area; Econ Geol (1989) 84:663-675 |