In cases of siliceous calculi, accordingly, the appropriate chemical prevention is caustic potash, which being present in the free state would attract to itself any free acid and leave the silica in its soluble condition as silicate of potash.
"Special Report on Diseases of Cattle"
U.S. Department of Agriculture J.R. Mohler
It is found in the soluble form in combination as silicate of potash, but at times is displaced by oxalic or other acid and then appears as gritty, sandy particles in the stem.
"Special Report on Diseases of Cattle"
U.S. Department of Agriculture J.R. Mohler
Some like the silicate growths are fixed.
"The Mechanism of Life"
Stéphane Leduc