Gypsum from selected localities.
USA | |
| USGS Bull 1042F |
Min Rec (1993) 24:311-314 | |
USGS Prof Paper 320 | |
Palache, C., Berman, H., Frondel, C. (1944) The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, 7th. edition, Volume I: 602. | |
USGS Prof Paper 320 |