Honestly, some parts of it look like a limestone or dolomite and other parts of it look like chert. It may not be from the Avon Park Formation, but it could be from a unit that is the same age in Alabama. This website mentions the “Claiborn/Jackson Group” which include “fossiliferous chert and limestone boulders”. https://mrdata.usgs.gov/geology/state/fips-unit.php?code=f01069https://mrdata.usgs.gov/geology/state/fips-unit.php?code=f01069