Kieserite, yuav luag dawb ntsev uas yog qis dej nyob rau hauv cov dej txias thiab yooj yim dua dej dawb hauv cov dej kub, cov ntaub ntawv ua hauv marine evaporate deposits qhov chaw dej hiav txwv tau concentrated thiab raug rau lub caij nyoog ntev evaporation. Ib qho kev soj ntsuam ntawm kieserite qhia 15.0% magnesium (25% magnesium oxide, 75% magnesium sulfate), 20.0% sulfur (li sulphate), mus txog 2.5% chlorides, thiab 12% dej. Thaum tsis cia nyob rau hauv cov thawv kaw, cov tshauv ntawm kieserite yuav nqus dej ntawm huab cua thiab hloov mus rau magnesium sulfate heptahydrate.
