Geodes in Indiana

UPDATE: Recently visited area north of Bloomington, Inidana.
See: https://digitalrockhound.blogspot.com/2019/06/geode-hunting-near-bloomington-indiana.html

Map showing counties where geodes can be found in Indiana. Geodes can be found from in the southern third of the state. Popular counties to find geodes include Brown, Monroe, Morgan, Lawrence and Washington. and scattered on the ground.

(Map Generated by DRC 3.0)
Read more :

• http://www.ehow.com/info_8158449_geodes-indiana.html 
• http://indianastatemuseum.wordpress.com/2009/01/23/the-secret-of-geodes/ 
• http://www.gatorgirlrocks.com/state-by-state/indiana.html 

Geodes
 Bedford, Indiana Geodes containing barite, calcite, dolomite, marcasite, millerite, pyrite, quartz, & sphalerite occur in a layer of limestone exposed by the road-cut along State Route 37, approximately 10.5 miles north of Bedford (just south of the Monroe Lake exit).

• From http://igs.indiana.edu/ReferenceDocs/GeoNotes/GeoNotes_Geodes.pdf 

In south-central Indiana geodes can be found in the walls of road cuts and other exposures of rocks of the Harrodsburg Limestone and Ramp Creek Formation. For several miles on either side of this outcrop area, geodes are abundant along streams