Marcasite from Del Norte County, California, USA
USA | |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| Murdoch, Joseph, Webb, Robert W. (1966) Minerals of California, Centennial Volume (1866-1966) - California Division Mines and Geology, Bulletin 189. p.1-559. Laizure, Clyde McK (1925), San Francisco field division: California Mining Bureau. Report 21: 287 |