Diatomite waa nooc ka mid ah dhagaxa siliceous, inta badan lagu qaybiyey Shiinaha, Maraykanka, Japan, Denmark, France, Romania iyo dalal kale.Waa dhagax sedimentary siliceous biogenic, inta badan ka kooban hadhaagii diatoms qadiimiga ah.Halabuurka kiimikaadku waxa uu u badan yahay SiO2, taas oo lagu tilmaami karo SiO2 · nH2O, macdanteedana waa opal iyo noocyadeeda.Kaydka diatomit ee Shiinaha waa 320 milyan oo tan, kaydka la filayo ayaa ka badan 2 bilyan oo tan.

Cufnaanta diatomite waa 1.9-2.3g/cm3, cufnaanta bulk waa 0.34-0.65g/cm3, bedka gaarka ah waa 40-65 ㎡/g, mugga daloolkuna waa 0.45-0.98m ³/ g.Nuugista biyuhu waa 2-4 jeer mugga u gaar ah, barta dhalaaliduna waa 1650C-1750 ℃.Qaab dhismeedka daloolka gaarka ah waxaa lagu arki karaa mikroskoobka elektarooniga ah.

Diatomite waxa uu ka kooban yahay amorphous SiO2 waxana uu ka kooban yahay qadar yar oo ah Fe2O3, CaO, MgO, Al2O3 iyo wasakh dabiici ah.Diatomite badanaa waa huruud khafiif ah ama cawl khafiif ah, jilicsan, dalool iyo iftiin.Waxaa inta badan loo isticmaalaa in warshadaha sida walxaha dahaarka kulaylka, alaabta filter, filler, alaabta abrasive, alaabta ceeriin galaas biyaha, wakiilka decolorizing, gargaar filter diatomite, sidaha kicinta, iwm Qaybta ugu muhiimsan ee diatomite dabiiciga ah waa SiO2.Diatomite-ta tayada sare leh waa caddaan, iyo waxa ku jira SiO2 inta badan waxay ka badan tahay 70%.Diatoms monomer waa mid aan midab lahayn oo hufan.Midabka diatomite wuxuu ku xiran yahay macdanta dhoobada iyo walxaha organic, iwm. Halabuurka diatomite ee ilaha macdanta kala duwan ayaa ka duwan.

Diatomite waa nooc ka mid ah kaydka carrada urursan ee diatom ee fossil diatom oo la sameeyay ka dib dhimashadii warshad hal unug ka kooban oo loo yaqaan diatom ka dib markii la ururiyay muddo 10000 ilaa 20000 sano ah.Diatom waa mid ka mid ah protozoa-yada ugu horreeya ee dhulka, ku nool biyaha badda ama biyaha harada.

Diatomite-kan waxa uu ka samaysan yahay meel dhigista hadhaaga diatom dhirta biyaha ee hal unug ka kooban.Waxqabadka gaarka ah ee diatomkani waa inuu ku nuugi karo silikoon bilaash ah biyaha si uu u sameeyo qalfoofkiisa.Marka ay nolosheeda dhammaato, waxay dhigi doontaa oo ay samayn doontaa dhigaal diatomite oo hoos yimaada xaaladaha juqraafiga qaarkood.Waxay leedahay qaar ka mid ah sifooyin gaar ah, sida porosity, feejignaan hoose, meel sare oo gaar ah oo weyn, qaraabo la'aanta iyo xasiloonida kiimikada.Ka dib markii la beddelo qaybinta size qayb iyo guryaha dusha ciidda ceeriin dhex shiidi, kala soocidda, calcination, kala soocida socodka hawada, ka saarista nijaasta ah iyo hababka kale ee processing, waxaa lagu dabaqi karaa in ay shuruudaha warshadaha kala duwan sida daro rinjiga.