Limestone will fizz when vinegar is applied. Sandstone will not. Sandstone is usually composed of visible grains of sand which feel gritty to touch. Limestone is not composed of sand grains and...
Chemically, the distinction between limestone and dolostone is that the first one is chiefly composed of calcite, CaCO3, whereas the second is rich in MgCO3-Dolomite-. Therefore, the difference is...
Limestone is usually made of precipitated calcite, shell fragments, and mud. If you look very closely, you may see tiny fossils in it. Marble is limestone that has metamorphosed through heat and...