Cenospheres na aluminum-silicate/Ƙananan Microspheres na Yumbu
Cenosphere sune ƙananan speres na Silica da Alumina waɗanda ke cike da iskar gas wanda ke faruwa a zahiri a lokacin ƙona kwal yayin samar da wutar lantarki. Halayen suna kama da samfuran da aka ƙera da aka ƙera. Don haka ana kiransa da Beads na Gilashi, Hollow Ceramic Sphere ko Microspheres.
Girman ya bambanta daga microns 10 zuwa 600, Rage raga 35, raga 40, raga 48, raga 50, raga 80, raga 100, raga 115, raga 150, raga 200.
Launuka sun kama daga fari zuwa launin toka mai haske.