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Lithics Home | Counties A-Z | Geologic Systems | Lithic Types | Chert Drawers | Lithics Program   Drawer # 11 System(s): Mississippian   Lithic Type:   Croton Chalcedony County(s):   Jefferson, Lee, Louisa, Mahaska, Van Buren, Washington Lithic Type:   Croton Banded County(s):   Henry, Jefferson   (Rear) Croton Chalcedony Lee Co. LE-E+   Croton Chalcedony Louisa Co. LA-B2   Croton Chalcedony Van Buren Co. VB-F+   Croton Chalcedony Washington Co. WS-A   Croton Chalcedony Lee Co. LE-E   Croton Chalcedony Louisa Co. LA-B2+   Croton Chalcedony Van Buren Co. VB-F   Croton Chalcedony Washington Co. WS-A+   Croton Chalcedony Jefferson Co. JF-F+   Croton Chalcedony Louisa Co. LA-C+   Croton Chalcedony Van Buren Co. VB-E+   Croton Banded Henry Co. HN-L   Croton Chalcedony Jefferson Co. JF-F   Croton Chalcedony Mahaska Co. MK-A   Croton Chalcedony Van Buren Co. VB-E   Croton Banded Henry Co. HN-L+   Croton Chalcedony Jefferson Co. JF-E+   Croton Chalcedony Mahaska Co. MK-A+   Croton Chalcedony Van Buren Co. VB-C+   Croton Banded Jefferson Co. JF-C   Croton Chalcedony Jefferson Co. JF-E   Croton Chalcedony Story Co. SR-B1   Croton Chalcedony Van Buren Co. VB-C   Croton Banded Jefferson Co. JF-C+     (Front) Updated by Tricia R. Bender, Web Designer Mary De La Garza, Web Master Click here to go back to the OSA homepage. Click here to go to The University of Iowa website.