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baseball mud and baseball
Umpires use special mud to rub the gloss off the ball. I had to get some.Photo (c) Andrew Alden, licensed to About.com (fair use policy)
baseball mud in water
It's slippery with organic matter, but has little clay to cloud the water.Geology Guide photo
closeup of washed silt
The washed mud (on unbleached filter) is almost pure silt. 3X magnification.Geology Guide pohto