Diatomite
Chemical tests on the clayey diatomite showed that it was an acid rock with approximately 60% SiO 2.The parameters of the amount of SiO 2 and Al 2 O 3 present, as well as the mass loss (LOI), obviously indicate the determined mineral phases—opal, illite, quartz, feldspar, chlorite in the treated sample. The total alkaline oxide content of 2.53% …