Natural & Other Stone Types

Rausch Granite – SD, MN, ND, IA & NE

The familiar stone types that are used today are identified through four categories: Sedimentary, Metamorphic, Igneous Stone and Man-Made.

Igneous

Granite

Igneous stones are mainly formed through volcanic material such as magma. Underneath the Earths surface, liquid magma cooled and solidified. Mineral gases and liquids penetrated into the stone and created new crystalline formations with various colors.

Metamorphic

Marble, Slate, Serpentine and Onyx

Metamorphic stone originates from a natural change from one type of stone to another type through the mixture of heat, pressure, and minerals. The change may be a development of a crystalline formation, a texture change, or a color change.

Sedimentary

Limestone, Sandstone, Soapstone, Fossilstone and Travertine

Sedimentary stone came from organic elements such as glaciers, rivers, wind, oceans, and plants. Tiny sedimentary pieces broke off from these elements and accumulated to form rock beds. They were bonded through millions of years of heat and pressure.

Man-Made

Engineered Stone, Quartz, Terrazzo, Agglomerate and Faux Marble

Man-Made Stones are derived of unnatural mixtures such resin or cement with the additive of stone chips.