siliceous rock
siliceous earth
The host rock conformably overlies a band of siliceous chertybrecia.
The main kinds of rocks include carbonate rocks, tuffite, siliceous rocks and quartz sand-stone.
The deposit occurs in the carbargillite-siliceous rock and ferroan carbonate rock of the Sinian-Cambrian system on the border of the Douling doming paleostructure in South Qinling.
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