??? Id

[bradk05]

Any input would be appreciated. Thanks

 

[GatorBoy]

Looks like a bunch of geodes. Some nice ones too. To think most of them start out as an air bubble is amazing.

 

[RiverWalker]

Yeah, I mostly agree with the geode remark. Looks to me like some sort of geodic iron concretion. I'm guessing a rare earth magnet on a string might lightly tug on them..

 

[bradk05]

Hey Thanks for your alls inputs. Any thoughts on it or them being chert nodules?

 

[Harry Pristis]

Hey Thanks for your alls inputs. Any thoughts on it or them being chert nodules?

Chert, agate, flint -- it's all cryptocrystalline quartz. That is, it is a sedimentary deposit of silica dioxide (SiO2) carried in solution by groundwater. Geodes represent a complex geochemical process in which a decomposing and dissolving fossil may be the focus.

The circulation of groundwater is the key to growth of a geode and to the development of crystals in the interior. Without that circulation of SiO2-rich groundwater, the exterior of the geode may remain small, and the interior may remain a void filled with fossil water.

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[bradk05]

Thanks alot for the info and knowledge.

What state are you from?

 

[Harry Pristis]

Thanks alot for the info and knowledge.

What state are you from?

Uhh . . . Me? I live in Northcentral Florida, but many years ago I lived in Indiana and Illinois. Thats when I collected these geodes near Harrodsburg.