. . "2.58"^^ . . "DIAT"@en . . "0.0"^^ . . . . "Diatomite. Superficial deposits. Occurs onshore. Formed during the Quaternary Period (2.58-0 Ma BP)."@en . . . "Diatomite"@en . "Diatomite is a type of siliceous rock which is predominantly composed of diatoms, single-celled siliceous plants which lived in either marine or freshwater. It is the lithified equivalent of diatomaceous-ooze."@en . "stable"@en . "Diatomite"@en . .