Here is a trip I made out to Oatman, Az. and FA hunting, this was this past winter so It wasn't hot.
It sure will make you appreachiate the beautiful difficulty it is to mine this stuff let alone find a gem quality piece.
The picture with the cones along side the road are a mine. (yes there is a fire agate mine right next to the road)
Included is a nice gem quality one from Oatman that I own