04. Xim rau hauv iav

Xim rau hauv iav yuav tau los ntawm kev ntxiv hluav taws xob (los xim xim nqaij daim tawv) uas yog homogeneously muab faib, thiab nag lossis daus ntawm cov tshuaj lom dispersed.

Sedimentary qab-kua qaub iav tshwm rau xim tsis pom qhov muag thaum nws kuv nyias . Hlau (II) oxide (FeO) impurities ntawm li 0.1 wt% tsim ib cov ntsuab tint, uas tau saib hauv cov tuab daim los yog nrog cov kev pab cuam scientific.

Ntxiv FeO thiab chromium (III) oxide (Cr2O3) ntxiv yuav raug siv rau cov khoom noj ntsuab. Sulfur, ua ke nrog cov pa roj thiab ntsev, yog siv los ua cov hlau polysulfides thiab tsim cov tshuaj amber ib nrab ntawm yellowish mus rau yuav luag dub .

Ib lub iav yaj kuj tuaj yeem tau txais ib qho xim daj los ntawm kev txo kev sibtshuaj.