Potato Patch West (?) Thundereggs

I am not sure about the ID here. It is based on a similar stone on Jeffrey Anderson's website that possesses the same white tilt layers and grey pool at the bottom. However, the matrix looks closer to Middle Hauser. I will keep the questionmark against this for the time being. It's an absolutely fascinating stone though - smashed during of close to the tilt event, then the shards frozen in white!