Slate is a metamorphic rock which is impermeable, hard, close in texture, quick drying, frost resistant, fine grained and fissile - ie it splits easily into thin layers. It is brittle and needs to be handled carefully
Limestone rocks are sedimentary rocks that are made from the mineral calcite, which came from the beds of evaporated seas and lakes and from sea animal shells. This rock is used in concrete and is an excellent building stone for humid regions.
Granite rocks are igneous rocks, which were formed by slowly cooling pockets of magma that were trapped beneath the earth's surface. Granite is used for long lasting monuments and for trim and decoration on buildings. Igneous rocks are called fire rocks and are formed eithe...
Sandstone rocks are sedimentary rocks made from small grains of the minerals quartz and feldspar. They often form in layers as seen in this picture. They are often used as building stones. For thousands, even millions of years, little pieces of our earth have been eroded-br...
