- siliceous argillite
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кремнистые аргиллиты
English-Russian dictionary of geology. 2011.
English-Russian dictionary of geology. 2011.
Vitreous quartzite — is rock type primarily made up of fine grained quartz sand metamorphosed to a glassy brittle light colored siliceous unit.One of three rock type definitions that were first applied in the Coeur d’Alene Mining District to the Revett Formation… … Wikipedia