Kay county is florence type A. Florence type C can be found close geographically to type A. Some type C can knap rather well. There are I believe, A B C and D types of florence. Type A is generally found in Kay county in Oklahoma thus the name "Kay county chert".There is a type of florence A that is yellow in color that rivals all types IMO. Kevin I think I have some left I'll try to find it and set it aside for you.