|
USA | |
| Howard, J. Michael (2007) Bulletin Vol. 23, Mineral Species of Arkansas - A Digest (2nd ed.) Arkansas Geological Commission |
| Arkansas Geological Commission |
| Howard, J. Michael (2007) Bulletin Vol. 23, Mineral Species of Arkansas - A Digest (2nd ed.) Arkansas Geological Commission |
| Arkansas Geological Commission |
| USGS : Midway Group |
| USGS : Midway Group |
| USGS : Midway Group |
| USGS : Midway Group |
| USGS : Midway Group |
| Howard, J. Michael (2007) Bulletin Vol. 23, Mineral Species of Arkansas - A Digest (2nd ed.) Arkansas Geological Commission Howard, J. Michael (1987) Mineral Species of Arkansas - A Digest. Bulletin Vol. 23 (1st ed.) Arkansas Geological Commission |
| Earth Treasures Vol 4, Allan W. Eckert, 1987 |
| Strickler ME, R. E. Ferrell J.: Clays and Clay Minerals 38:69-76. (1990) |
| Swann, Charles T. and Saunders, James A. (1992), Cap Rock Geology of the Hazlehurst Salt Dome, Copiah County, Mississippi, Gulf Coast Association of Geological Societies Transactions: 42: 697-705. |
| Flis,James E.,Flis,Christopher J.,(2015) Stone City Member,Middle Eocene,Claiborne Group,Stone City Bluff,Burleson Co.,TexasMain Glauconite Bed (MGB) Study Guide |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| Malone, V.F., 1957, “Mining East Texas Iron Ore”, Mining Engineering Vol. IX, AIME. USGS MAS/MILS Mining Data Online (ID No. 102331) |