Zeolite grew first before
being replaced by agate.
Weird sagenite!
Not sure if this is a Laguna Agate.
I got what may be an "Old Laguna" mined some long time ago as a "Cut
Rough" for
just $12 from a Rock Swap show. The reason for such price is because
of two bad saw cuts (you can see one at the left edge of this agate).
Took me a long time of grinding to get rid of the second bad saw.