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Sandstone: Calcitic sedimentary stone, made up primarily from fragments of detritus and mineral granules, having dimensions between 1/6mm and 2mm. There are a great number of types of Sandstone depending on the genesis, structure and composition: eolianite, arkose (feldspathic -quartz sandstones) and lithic arenites (which may also be calcareous containing calcite or aragonite), etc.
LIMESTONE: Calcareous rock in the widest sense. In Anglo-Saxon nomenclature this term is often used to distinguish a non-crystalline marble, (namely a calcareous stone = limestone) from a crystalline metamorphic stone = marble).
Index to Union Tiles’ Natural Stone catalogue consisting of marble, travertine, granite, sandstone, quartzite, limestone and slate. Stone is the natural choice in green architecture. Natural stone flooring, walling and countertops will not need to be replaced for a very long time, they are 100% recyclable, do not emit VOC’s into your home/building, and can be cleaned with PH-Neutral detergents that are bio-degradable.