21. Some clay minerals ( Kaolinite ) are used as carrier material for fungicides and insecticides. 22. The carbonates were found near the clay minerals . 23. Although clay-sized, the flour particles are not clay minerals , but typically ground up quartz and feldspar. 24. Note that caesium is not mobile in most soils because it binds to the clay minerals . 25. Clay minerals in the A horizon decompose by reaction with humic acids and form soluble salts.26. Clay minerals need water to form, so the area may once have contained large amounts of water.27. Essentially, slate forms when the clay minerals in shale are out under increased pressure with high temperatures. 28. Ultisols can have a variety of clay minerals , but in many cases the dominant mineral is kaolinite. 29. As an alternative to animal products, bentonite, a clay mineral , can be used to clarify the wine. 30. SIlver ore occurs in hydrothermal veins or as sulfides and clay minerals replacing the Jurassic Pucara limestone.
