Tilt thundereggs, where the horizontal bands in some agate are oriented in different directions due to the stone moving in the ground, are one of the most interesting features you can fine.  Here are two specimens showing various degrees of tilt.

Turkeytail 03

TurkeyTail Bed thunderegg. In this stone, the tilt has ‘crept’ – slowly moving and laying down bands of agate in a fan structure.

potatopatch_west01b

Unknown location – Possibly Middle Hauser or Potato Patch West. This one shows some dramatic events that have shattered the agate and left it to ‘freeze’ again inside a new material laid down at about 30 degrees to the original. Other half below.

potatopatch_west01a

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