Duniyar diatomaceous wani nau'in dutse ne na siliceous sedimentary dutse, wanda akasari ya ƙunshi tsohuwar diatom.Abubuwan sinadaransa galibi SiO2 ne, wanda ya ƙunshi ƙaramin adadin Al₂O₃, Fe₂O₃, CaO, MgO, K₂O, Na₂O, P₂O₅da kwayoyin halitta.Babban amfani da diatomite shine kayan aikin tacewa, filler, adsorbents, masu ɗaukar hoto, kayan gini na muhalli da sauransu.