Alunite from North Carolina, USA
USA | |
| American Mineralogist Vol. 11 -1926 , April |
| American Mineralogist Vol. 22 -1937, May |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| Smithsonian Institution Mineral Reference Collection No. 161180-00 |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |