Brochantite from Washington, USA
USA | |
| Singer, D.A., Berger, V.I., Moring, B.C. (2008) Porphyry copper deposits of the world: Database and grade and tonnage models, 2008. Open-File Report 2008-1155 |
| Washington Geology, vol.25, no. 3, September 1997. |
ASARCO Smelter Site slag locality, Tacoma, Pierce County, Washington, USA