11. The palygorskite-sepiolite minerals are clay minerals with a layered structure. 12. Manganese, iron oxides, hydroxides, and clay minerals form most varnishes and provide the shine. 13. "' Organoclay "'is an organically modified phyllosilicate, derived from a naturally occurring clay mineral . 14. The clay minerals represented are largely kaolinite, montmorillonite and illite. 15. It also includes an area where clay minerals have been detected from orbiter observations. 16. During a deluge, slopes grow heavy and water lubricates clay minerals in the soil. 17. The weathering of many rock types produce clay minerals as one of its last products. 18. Low-temperature synthesis of clay minerals ( with kaolinite as an example ) has several aspects. 19. Soils with smectite clay minerals , including montmorillonite and bentonite, have the most dramatic shrink-swell capacity. 20. Mudrocks contain mostly clay minerals , and quartz and feldspars.
