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Knowing Your Stone: Siliceous vs Calcareous

Posted by Stone Care Pro on

Avoid causing damage to popular natural stones such as marble, travertine and limestone by understanding key differences between a siliceous and calcareous stone.

Cleaning marble or calcareous natural stones


Siliceous Stone

Common types of siliceous stone include: granite, slate, sandstone, quartzite, brownstone, and bluestone. A siliceous stone is composed mainly of silica or quartz-like particles. This type is considered very durable and relatively easy to clean. Unlike a calcareous stone, it is safe to use “mild”  acidic cleaning solutions on an occasional and infrequent basis.

Calcareous Stone

Common types of calcareous stones include: marble, travertine, limestone, and onyx. Composed mainly of calcium carbonate, a calcareous stone is very sensitive to cleaning solutions that contain acidic or alkaline value. 


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