Copper from
USA | |
| Ramdohr, Paul (1972) The Opaque Minerals in Stony Meteorites. De Gruyter. doi:10.1515/9783112651025 |
| Dana 6: 1077. |
| (1911) A Manual of the Copper Industry of the World. The Copper Handbook Vol. 10. Horace J. Stevens |
| Espenshade,Gilbert H.,(1963) Geology of some Copper Deposits in North Carolina,Virginia,and Alabama:Geological Survey Bulletion:1142-1 |
(2005) Mineral Resources Data System (MRDS), US Geological Survey. | |
| Ramdohr, Paul (1972) The Opaque Minerals in Stony Meteorites. De Gruyter. doi:10.1515/9783112651025 |