Turned out to be a beautiful day up on the Saddle Mountains for this trip. We had 16 vehicles in combination with Puyallup club. About half from CMS. Really nice tumbler material. Some of it just laying around on top of the ground. Much of it just under the surface. Logs are deeper if one wants to put in the effort. The material on top of the ground looked nice and clean, as if it was just washed by a spring rain, so was easy to spot. After we collected for a few hours, we went to the diatom pits for common opal. Pictures 4 and 6 are from some of the opal I collected. The last pic one would think is a nice piece of petrified wood. But opal from these pits are formed on the bottoms of ancient freshwater lakes from the cell walls/shells of microscopic single celled diatoms, which are alga or plankton like in nature.
Submitted by Roger Danneman CMS Field Trip Guide.