What is a flagstone?
The Earth's outer solid layer, is made of rock. In general rocks are of three types, namely, igneous (or volcanic rock) sedimentary (formed by sedimentary deposits) and metamorphic (stone which has been subjected to massive heat and or pressure causing it to change it's physical state).
Flagstone, or a Flag is a generic flat stone, usually used for paving slabs or walkways, patios, fences and roofing. The name derives from Middle English flagge meaning turf, perhaps from Old Norse flaga meaning slab.
A flagstone is a sedimentary rock that is split into layers along well defined bedding planes caused by a different mineral type or particle sizes. A flagstone is usually produced from a form of sandstone composed of feldspar and quartz. The material that binds flagstone is usually composed of silica, calcite, or iron oxide. The rock colour usually comes from these cementing materials. Typical flagstone colours are red, blue, and buff, though some other colours do exist.
