Goethite from selected localities.
USA | |
| Pogue,J.E.,(1910)The Cid mining district of Davidison County,North Carolina:North Carolina Geological and Economic Survey Bulletin #22; Steve Adams |
| Carpenter III, P. Albert (1976) Metallic Mineral Deposits of the Carolina Slate Belt, North Carolina : NCGS Bulletion 84 |
Conrad Hill Mine, Cid Mining District, Carolina Slate Belt, Davidson County, North Carolina, USA